##### General

- Overview
- Single Node Setup
- Cluster Setup
- Commands Reference
- FileSystem Shell
- Compatibility Specification
- Downstream Developer's Guide
- Admin Compatibility Guide
- Interface Classification
- FileSystem Specification

##### Common

- CLI Mini Cluster
- Native Libraries
- Proxy User
- Rack Awareness
- Secure Mode
- Service Level Authorization
- HTTP Authentication
- Credential Provider API
- Hadoop KMS
- Tracing
- Unix Shell Guide

##### HDFS

- Architecture
- User Guide
- Commands Reference
- NameNode HA With QJM
- NameNode HA With NFS
- Observer NameNode
- Federation
- ViewFs
- ViewFsOverloadScheme
- Snapshots
- Edits Viewer
- Image Viewer
- Permissions and HDFS
- Quotas and HDFS
- libhdfs (C API)
- WebHDFS (REST API)
- HttpFS
- Short Circuit Local Reads
- Centralized Cache Management
- NFS Gateway
- Rolling Upgrade
- Extended Attributes
- Transparent Encryption
- Multihoming
- Storage Policies
- Memory Storage Support
- Synthetic Load Generator
- Erasure Coding
- Disk Balancer
- Upgrade Domain
- DataNode Admin
- Router Federation
- Provided Storage

##### MapReduce

- Tutorial
- Commands Reference
- Compatibility with 1.x
- Encrypted Shuffle
- Pluggable Shuffle/Sort
- Distributed Cache Deploy
- Support for YARN Shared Cache

##### MapReduce REST APIs

- MR Application Master
- MR History Server

##### YARN

- Architecture
- Commands Reference
- Capacity Scheduler
- Fair Scheduler
- ResourceManager Restart
- ResourceManager HA
- Resource Model
- Node Labels
- Node Attributes
- Web Application Proxy
- Timeline Server
- Timeline Service V.2
- Writing YARN Applications
- YARN Application Security
- NodeManager
- Running Applications in Docker Containers
- Using CGroups
- Secure Containers
- Registry
- Reservation System
- Graceful Decommission
- Opportunistic Containers
- YARN Federation
- Shared Cache
- Using GPU
- Using FPGA
- Placement Constraints
- YARN UI2

##### YARN REST APIs

- Introduction
- Resource Manager
- Node Manager
- Timeline Server
- Timeline Service V.2

##### YARN Service

- Overview
- QuickStart
- Concepts
- Yarn Service API
- Service Discovery
- System Services

##### Submarine

- Index
- QuickStart
- Examples

##### Hadoop Compatible File Systems

- Aliyun OSS
- Amazon S3
- Azure Blob Storage
- Azure Data Lake Storage
- OpenStack Swift

##### Auth

- Overview
- Examples
- Configuration
- Building

##### Tools

- Hadoop Streaming
- Hadoop Archives
- Hadoop Archive Logs
- DistCp
- GridMix
- Rumen
- Resource Estimator Service
- Scheduler Load Simulator
- Hadoop Benchmarking

##### Reference

- Changelog and Release Notes
- Java API docs
- Unix Shell API
- Metrics

##### Configuration

- core-default.xml
- hdfs-default.xml
- hdfs-rbf-default.xml
- mapred-default.xml
- yarn-default.xml
- kms-default.xml
- httpfs-default.xml
- Deprecated Properties

# Apache Hadoop Changelog

## Release 2.3.0 - 2014-02-20

### INCOMPATIBLE CHANGES:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
HDFS-4997 | libhdfs doesn’t return correct error codes in most cases | Major | libhdfs | Colin P. McCabe | Colin P. McCabe

### NEW FEATURES:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
HADOOP-9432 | Add support for markdown .md files in site documentation | Minor | build, documentation | Steve Loughran | Steve Loughran
HADOOP-9618 | Add thread which detects JVM pauses | Major | util | Todd Lipcon | Todd Lipcon
MAPREDUCE-5265 | History server admin service to refresh user and superuser group mappings | Major | jobhistoryserver | Jason Lowe | Ashwin Shankar
MAPREDUCE-5266 | Ability to refresh retention settings on history server | Major | jobhistoryserver | Jason Lowe | Ashwin Shankar
HADOOP-9848 | Create a MiniKDC for use with security testing | Major | security, test | Wei Yan | Wei Yan
HADOOP-8545 | Filesystem Implementation for OpenStack Swift | Major | fs | Tim Miller | Dmitry Mezhensky
MAPREDUCE-5332 | Support token-preserving restart of history server | Major | jobhistoryserver | Jason Lowe | Jason Lowe
YARN-1021 | Yarn Scheduler Load Simulator | Major | scheduler | Wei Yan | Wei Yan
HDFS-5260 | Merge zero-copy memory-mapped HDFS client reads to trunk and branch-2. | Major | hdfs-client, libhdfs | Chris Nauroth | Chris Nauroth
YARN-1253 | Changes to LinuxContainerExecutor to run containers as a single dedicated user in non-secure mode | Blocker | nodemanager | Alejandro Abdelnur | Roman Shaposhnik
MAPREDUCE-1176 | FixedLengthInputFormat and FixedLengthRecordReader | Major | . | BitsOfInfo | Mariappan Asokan
YARN-1392 | Allow sophisticated app-to-queue placement policies in the Fair Scheduler | Major | scheduler | Sandy Ryza | Sandy Ryza
HADOOP-10047 | Add a directbuffer Decompressor API to hadoop | Major | io | Gopal V | Gopal V
HDFS-5703 | Add support for HTTPS and swebhdfs to HttpFS | Major | webhdfs | Alejandro Abdelnur | Alejandro Abdelnur
HDFS-4949 | Centralized cache management in HDFS | Major | datanode, namenode | Andrew Wang | Andrew Wang
HDFS-2832 | Enable support for heterogeneous storages in HDFS - DN as a collection of storages | Major | datanode, namenode | Suresh Srinivas | Arpit Agarwal

### IMPROVEMENTS:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
HDFS-4860 | Add additional attributes to JMX beans | Major | namenode | Trevor Lorimer | Trevor Lorimer
HADOOP-9241 | DU refresh interval is not configurable | Trivial | . | Harsh J | Harsh J
HDFS-4278 | Log an ERROR when DFS_BLOCK_ACCESS_TOKEN_ENABLE config is disabled but security is turned on. | Major | datanode, namenode | Harsh J | Kousuke Saruta
HDFS-5034 | Remove debug prints from getFileLinkInfo | Trivial | namenode | Andrew Wang | Andrew Wang
HDFS-5004 | Add additional JMX bean for NameNode status data | Major | namenode | Trevor Lorimer | Trevor Lorimer
HADOOP-9319 | Update bundled lz4 source to latest version | Major | . | Arpit Agarwal | Binglin Chang
MAPREDUCE-434 | LocalJobRunner limited to single reducer | Minor | . | Yoram Arnon | Aaron Kimball
YARN-985 | Nodemanager should log where a resource was localized | Major | nodemanager | Ravi Prakash | Ravi Prakash
HDFS-5068 | Convert NNThroughputBenchmark to a Tool to allow generic options. | Major | benchmarks | Konstantin Shvachko | Konstantin Shvachko
HADOOP-9860 | Remove class HackedKeytab and HackedKeytabEncoder from hadoop-minikdc once jira DIRSERVER-1882 solved | Major | . | Wei Yan | Wei Yan
HADOOP-9487 | Deprecation warnings in Configuration should go to their own log or otherwise be suppressible | Major | conf | Steve Loughran |
HDFS-2933 | Improve DataNode Web UI Index Page | Major | datanode | Philip Zeyliger | Vivek Ganesan
HADOOP-9693 | Shell should add a probe for OSX | Trivial | . | Steve Loughran |
HADOOP-9784 | Add a builder for HttpServer | Major | . | Junping Du | Junping Du
MAPREDUCE-5484 | YarnChild unnecessarily loads job conf twice | Major | task | Sandy Ryza | Sandy Ryza
HADOOP-9909 | org.apache.hadoop.fs.Stat should permit other LANG | Major | fs | Shinichi Yamashita |
HDFS-5144 | Document time unit to NameNodeMetrics.java | Minor | documentation | Akira Ajisaka | Akira Ajisaka
HADOOP-9915 | o.a.h.fs.Stat support on Macosx | Trivial | . | Binglin Chang | Binglin Chang
HDFS-4879 | Add “blocked ArrayList” collection to avoid CMS full GCs | Major | namenode | Todd Lipcon | Todd Lipcon
HADOOP-8704 | add request logging to jetty/httpserver | Major | . | Thomas Graves | Jonathan Eagles
HDFS-5188 | Clean up BlockPlacementPolicy and its implementations | Major | namenode | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze
HDFS-5207 | In BlockPlacementPolicy, update 2 parameters of chooseTarget() | Major | namenode | Junping Du | Junping Du
MAPREDUCE-5487 | In task processes, JobConf is unnecessarily loaded again in Limits | Major | performance, task | Sandy Ryza | Sandy Ryza
HADOOP-9998 | Provide methods to clear only part of the DNSToSwitchMapping | Major | net | Junping Du | Junping Du
YARN-1010 | FairScheduler: decouple container scheduling from nodemanager heartbeats | Critical | scheduler | Alejandro Abdelnur | Wei Yan
YARN-1199 | Make NM/RM Versions Available | Major | . | Mit Desai | Mit Desai
YARN-1258 | Allow configuring the Fair Scheduler root queue | Major | scheduler | Sandy Ryza | Sandy Ryza
HADOOP-9470 | eliminate duplicate FQN tests in different Hadoop modules | Major | test | Ivan A. Veselovsky | Ivan A. Veselovsky
HDFS-5323 | Remove some deadcode in BlockManager | Minor | namenode | Colin P. McCabe | Colin P. McCabe
HDFS-5267 | Remove volatile from LightWeightHashSet | Minor | . | Junping Du | Junping Du
HADOOP-9494 | Excluded auto-generated and examples code from clover reports | Major | . | Dennis Y | Andrey Klochkov
HDFS-5338 | Add a conf to disable hostname check in DN registration | Major | namenode | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze
HADOOP-10046 | Print a log message when SSL is enabled | Trivial | . | David S. Wang | David S. Wang
HADOOP-9897 | Add method to get path start position without drive specifier in o.a.h.fs.Path | Trivial | fs | Binglin Chang | Binglin Chang
HADOOP-10005 | No need to check INFO severity level is enabled or not | Trivial | . | Jackie Chang | Jackie Chang
HDFS-5360 | Improvement of usage message of renameSnapshot and deleteSnapshot | Minor | snapshots | Shinichi Yamashita | Shinichi Yamashita
MAPREDUCE-5457 | Add a KeyOnlyTextOutputReader to enable streaming to write out text files without separators | Major | . | Sandy Ryza | Sandy Ryza
HDFS-5331 | make SnapshotDiff.java to a o.a.h.util.Tool interface implementation | Major | snapshots | Vinayakumar B | Vinayakumar B
HADOOP-10064 | Upgrade to maven antrun plugin version 1.7 | Major | build | Arpit Agarwal | Arpit Agarwal
YARN-1335 | Move duplicate code from FSSchedulerApp and FiCaSchedulerApp into SchedulerApplication | Major | scheduler | Sandy Ryza | Sandy Ryza
YARN-1333 | Support blacklisting in the Fair Scheduler | Major | scheduler | Sandy Ryza | Tsuyoshi Ozawa
YARN-1109 | Demote NodeManager “Sending out status for container” logs to debug | Major | nodemanager | Sandy Ryza | haosdent
MAPREDUCE-5596 | Allow configuring the number of threads used to serve shuffle connections | Major | . | Sandy Ryza | Sandy Ryza
YARN-1290 | Let continuous scheduling achieve more balanced task assignment | Major | . | Wei Yan | Wei Yan
MAPREDUCE-5601 | ShuffleHandler fadvises file regions as DONTNEED even when fetch fails | Major | . | Sandy Ryza | Sandy Ryza
HDFS-5037 | Active NN should trigger its own edit log rolls | Critical | ha, namenode | Todd Lipcon | Andrew Wang
HADOOP-10079 | log a warning message if group resolution takes too long. | Major | . | Colin P. McCabe | Colin P. McCabe
HDFS-5344 | Make LsSnapshottableDir as Tool interface implementation | Minor | snapshots, tools | sathish | sathish
HADOOP-9623 | Update jets3t dependency to 0.9.0 | Major | fs/s3 | Timothy St. Clair | Amandeep Khurana
HDFS-5371 | Let client retry the same NN when “dfs.client.test.drop.namenode.response.number” is enabled | Minor | ha, test | Jing Zhao | Jing Zhao
HDFS-5467 | Remove tab characters in hdfs-default.xml | Trivial | . | Andrew Wang | Shinichi Yamashita
YARN-1387 | RMWebServices should use ClientRMService for filtering applications | Major | api | Karthik Kambatla | Karthik Kambatla
HDFS-5495 | Remove further JUnit3 usages from HDFS | Major | . | Andrew Wang | Jarek Jarcec Cecho
HADOOP-9594 | Update apache commons math dependency | Major | build | Timothy St. Clair | Timothy St. Clair
HADOOP-10095 | Performance improvement in CodecPool | Minor | io | Nicolas Liochon | Nicolas Liochon
HADOOP-10067 | Missing POM dependency on jsr305 | Minor | . | Robert Rati | Robert Rati
YARN-786 | Expose application resource usage in RM REST API | Major | . | Sandy Ryza | Sandy Ryza
YARN-1303 | Allow multiple commands separating with “;” in distributed-shell | Major | applications/distributed-shell | Tassapol Athiapinya | Xuan Gong
HDFS-5532 | Enable the webhdfs by default to support new HDFS web UI | Major | webhdfs | Vinayakumar B | Vinayakumar B
HADOOP-10111 | Allow DU to be initialized with an initial value | Major | . | Kihwal Lee | Kihwal Lee
YARN-1423 | Support queue placement by secondary group in the Fair Scheduler | Major | scheduler | Sandy Ryza | Theodore michael Malaska
HDFS-5548 | Use ConcurrentHashMap in portmap | Major | nfs | Haohui Mai | Haohui Mai
HDFS-5561 | FSNameSystem#getNameJournalStatus() in JMX should return plain text instead of HTML | Minor | namenode | Fengdong Yu | Haohui Mai
HDFS-5568 | Support inclusion of snapshot paths in Namenode fsck | Major | snapshots | Vinayakumar B | Vinayakumar B
HADOOP-10132 | RPC#stopProxy() should log the class of proxy when IllegalArgumentException is encountered | Minor | . | Ted Yu | Ted Yu
HDFS-5577 | NFS user guide update | Trivial | documentation | Brandon Li | Brandon Li
HDFS-5563 | NFS gateway should commit the buffered data when read request comes after write to the same file | Major | nfs | Brandon Li | Brandon Li
MAPREDUCE-5640 | Rename TestLineRecordReader in jobclient module | Trivial | test | Jason Lowe | Jason Lowe
YARN-1332 | In TestAMRMClient, replace assertTrue with assertEquals where possible | Minor | . | Sandy Ryza | Sebastian Wong
YARN-1403 | Separate out configuration loading from QueueManager in the Fair Scheduler | Major | . | Sandy Ryza | Sandy Ryza
HDFS-5587 | add debug information when NFS fails to start with duplicate user or group names | Minor | nfs | Brandon Li | Brandon Li
HDFS-5633 | Improve OfflineImageViewer to use less memory | Minor | . | Jing Zhao | Jing Zhao
HDFS-4983 | Numeric usernames do not work with WebHDFS FS | Major | webhdfs | Harsh J | Yongjun Zhang
YARN-807 | When querying apps by queue, iterating over all apps is inefficient and limiting | Major | . | Sandy Ryza | Sandy Ryza
HDFS-5637 | try to refeatchToken while local read InvalidToken occurred | Major | hdfs-client, security | Liang Xie | Liang Xie
HDFS-5652 | refactoring/uniforming invalid block token exception handling in DFSInputStream | Minor | hdfs-client | Liang Xie | Liang Xie
HDFS-5665 | Remove the unnecessary writeLock while initializing CacheManager in FsNameSystem Ctor | Major | namenode | Uma Maheswara Rao G | Uma Maheswara Rao G
HDFS-5350 | Name Node should report fsimage transfer time as a metric | Minor | namenode | Rob Weltman | Jimmy Xiang
HDFS-5674 | Editlog code cleanup | Minor | namenode | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze
HADOOP-9611 | mvn-rpmbuild against google-guice > 3.0 yields missing cglib dependency | Major | build | Timothy St. Clair | Timothy St. Clair
HADOOP-10164 | Allow UGI to login with a known Subject | Major | . | Robert Joseph Evans | Robert Joseph Evans
HDFS-5662 | Can’t decommission a DataNode due to file’s replication factor larger than the rest of the cluster size | Major | namenode | Brandon Li | Brandon Li
HDFS-5676 | fix inconsistent synchronization of CachingStrategy | Minor | hdfs-client | Colin P. McCabe | Colin P. McCabe
HDFS-5663 | make the retry time and interval value configurable in openInfo() | Major | hdfs-client | Liang Xie | Liang Xie
HADOOP-10172 | Cache SASL server factories | Critical | ipc | Daryn Sharp | Daryn Sharp
MAPREDUCE-5692 | Add explicit diagnostics when a task attempt is killed due to speculative execution | Major | mrv2 | Gera Shegalov | Gera Shegalov
HADOOP-10169 | remove the unnecessary synchronized in JvmMetrics class | Minor | metrics | Liang Xie | Liang Xie
HADOOP-10173 | Remove UGI from DIGEST-MD5 SASL server creation | Critical | ipc | Daryn Sharp | Daryn Sharp
HDFS-5695 | Clean up TestOfflineEditsViewer and OfflineEditsViewerHelper | Major | test | Haohui Mai | Haohui Mai
HADOOP-10198 | DomainSocket: add support for socketpair | Minor | native | Colin P. McCabe | Colin P. McCabe
HDFS-5220 | Expose group resolution time as metric | Major | namenode | Rob Weltman | Jimmy Xiang
MAPREDUCE-3310 | Custom grouping comparator cannot be set for Combiners | Major | client | Mathias Herberts | Alejandro Abdelnur
HADOOP-10208 | Remove duplicate initialization in StringUtils.getStringCollection | Trivial | . | Benoy Antony | Benoy Antony
HDFS-5721 | sharedEditsImage in Namenode#initializeSharedEdits() should be closed before method returns | Minor | . | Ted Yu | Ted Yu
HADOOP-10228 | FsPermission#fromShort() should cache FsAction.values() | Minor | fs | Haohui Mai | Haohui Mai
HDFS-5677 | Need error checking for HA cluster configuration | Minor | datanode, ha | Vincent Sheffer | Vincent Sheffer
YARN-1567 | In Fair Scheduler, allow empty queues to change between leaf and parent on allocation file reload | Major | scheduler | Sandy Ryza | Sandy Ryza
MAPREDUCE-5672 | Provide optional RollingFileAppender for container log4j (syslog) | Major | mr-am, mrv2 | Gera Shegalov | Gera Shegalov
YARN-1616 | RMFatalEventDispatcher should log the cause of the event | Trivial | resourcemanager | Karthik Kambatla | Karthik Kambatla
HADOOP-10143 | replace WritableFactories’s hashmap with ConcurrentHashMap | Major | io | Liang Xie | Liang Xie
HDFS-5748 | Too much information shown in the dfs health page. | Major | . | Kihwal Lee | Haohui Mai
YARN-1623 | Include queue name in RegisterApplicationMasterResponse | Major | scheduler | Sandy Ryza | Sandy Ryza
HDFS-5788 | listLocatedStatus response can be very large | Major | namenode | Nathan Roberts | Nathan Roberts
HADOOP-10167 | Mark hadoop-common source as UTF-8 in Maven pom files / refactoring | Major | build | Mikhail Antonov | Mikhail Antonov
HADOOP-10248 | Property name should be included in the exception where property value is null | Major | . | Ted Yu | Akira Ajisaka
HADOOP-9652 | Allow RawLocalFs#getFileLinkStatus to fill in the link owner and mode if requested | Major | . | Colin P. McCabe | Andrew Wang
HADOOP-10086 | User document for authentication in secure cluster | Minor | documentation | Masatake Iwasaki | Masatake Iwasaki
HDFS-5825 | Use FileUtils.copyFile() to implement DFSTestUtils.copyFile() | Minor | . | Haohui Mai | Haohui Mai
HADOOP-10274 | Lower the logging level from ERROR to WARN for UGI.doAs method | Minor | security | takeshi.miao | takeshi.miao
HDFS-5833 | SecondaryNameNode have an incorrect java doc | Trivial | namenode | Bangtao Zhou |
HDFS-5841 | Update HDFS caching documentation with new changes | Major | . | Andrew Wang | Andrew Wang
HDFS-5399 | Revisit SafeModeException and corresponding retry policies | Major | . | Jing Zhao | Jing Zhao
HDFS-5333 | Improvement of current HDFS Web UI | Major | . | Jing Zhao | Haohui Mai
MAPREDUCE-2734 | DistCp with FairScheduler assign all map tasks in one TT | Trivial | jobtracker | Bochun Bai | Bochun Bai
YARN-905 | Add state filters to nodes CLI | Major | . | Sandy Ryza | Wei Yan

### BUG FIXES:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
HDFS-4633 | TestDFSClientExcludedNodes fails sporadically if excluded nodes cache expires too quickly | Major | hdfs-client, test | Chris Nauroth | Chris Nauroth
HADOOP-9635 | Fix Potential Stack Overflow in DomainSocket.c | Major | native | V. Karthik Kumar |
MAPREDUCE-5316 | job -list-attempt-ids command does not handle illegal task-state | Major | client | Ashwin Shankar | Ashwin Shankar
HADOOP-9582 | Non-existent file to “hadoop fs -conf” doesn’t throw error | Major | conf | Ashwin Shankar | Ashwin Shankar
HADOOP-9660 | [WINDOWS] Powershell / cmd parses -Dkey=value from command line as [-Dkey, value] which breaks GenericsOptionParser | Major | scripts, util | Enis Soztutar | Enis Soztutar
HADOOP-9703 | org.apache.hadoop.ipc.Client leaks threads on stop. | Minor | . | Mark Miller | Tsuyoshi Ozawa
HDFS-4657 | Limit the number of blocks logged by the NN after a block report to a configurable value. | Major | namenode | Aaron T. Myers | Aaron T. Myers
MAPREDUCE-5380 | Invalid mapred command should return non-zero exit code | Major | . | Stephen Chu | Stephen Chu
MAPREDUCE-5404 | HSAdminServer does not use ephemeral ports in minicluster mode | Major | jobhistoryserver | Ted Yu | Ted Yu
HADOOP-9787 | ShutdownHelper util to shutdown threads and threadpools | Major | util | Karthik Kambatla | Karthik Kambatla
HADOOP-9817 | FileSystem#globStatus and FileContext#globStatus need to work with symlinks | Major | . | Colin P. McCabe | Colin P. McCabe
HDFS-5065 | TestSymlinkHdfsDisable fails on Windows | Major | hdfs-client, test | Ivan Mitic | Ivan Mitic
HADOOP-9847 | TestGlobPath symlink tests fail to cleanup properly | Minor | . | Andrew Wang | Colin P. McCabe
YARN-1060 | Two tests in TestFairScheduler are missing @Test annotation | Major | scheduler | Sandy Ryza | Niranjan Singh
HADOOP-9871 | Fix intermittent findbug warnings in DefaultMetricsSystem | Minor | . | Luke Lu | Junping Du
HDFS-4816 | transitionToActive blocks if the SBN is doing checkpoint image transfer | Major | namenode | Andrew Wang | Andrew Wang
HADOOP-9875 | TestDoAsEffectiveUser can fail on JDK 7 | Minor | test | Aaron T. Myers | Aaron T. Myers
HDFS-5093 | TestGlobPaths should re-use the MiniDFSCluster to avoid failure on Windows | Minor | test | Chuan Liu | Chuan Liu
HADOOP-9865 | FileContext.globStatus() has a regression with respect to relative path | Major | . | Chuan Liu | Chuan Liu
HDFS-4994 | Audit log getContentSummary() calls | Minor | namenode | Kihwal Lee | Robert Parker
HADOOP-9887 | globStatus does not correctly handle paths starting with a drive spec on Windows | Major | fs | Chris Nauroth | Chuan Liu
HDFS-4329 | DFSShell issues with directories with spaces in name | Major | hdfs-client | Andy Isaacson | Cristina L. Abad
HDFS-3981 | access time is set without holding FSNamesystem write lock | Major | namenode | Xiaobo Peng | Xiaobo Peng
HADOOP-9889 | Refresh the Krb5 configuration when creating a new kdc in Hadoop-MiniKDC | Major | . | Wei Yan | Wei Yan
HADOOP-9908 | Fix NPE when versioninfo properties file is missing | Major | util | Todd Lipcon | Todd Lipcon
HDFS-5164 | deleteSnapshot should check if OperationCategory.WRITE is possible before taking write lock | Minor | namenode | Colin P. McCabe | Colin P. McCabe
HDFS-5170 | BlockPlacementPolicyDefault uses the wrong classname when alerting to enable debug logging | Trivial | . | Andrew Wang | Andrew Wang
HADOOP-9350 | Hadoop not building against Java7 on OSX | Minor | build | Steve Loughran | Robert Kanter
HDFS-5122 | Support failover and retry in WebHdfsFileSystem for NN HA | Major | ha, webhdfs | Arpit Gupta | Haohui Mai
HADOOP-9929 | Insufficient permissions for a path reported as file not found | Major | fs | Jason Lowe | Colin P. McCabe
HADOOP-9791 | Add a test case covering long paths for new FileUtil access check methods | Major | . | Ivan Mitic | Ivan Mitic
MAPREDUCE-5504 | mapred queue -info inconsistent with types | Major | client | Thomas Graves | Kousuke Saruta
HADOOP-7344 | globStatus doesn’t grok groupings with a slash | Major | fs | Daryn Sharp | Colin P. McCabe
YARN-1188 | The context of QueueMetrics becomes ‘default’ when using FairScheduler | Trivial | . | Akira Ajisaka | Tsuyoshi Ozawa
MAPREDUCE-5522 | Incorrectly expect the array of JobQueueInfo returned by o.a.h.mapred.QueueManager#getJobQueueInfos to have a specific order. | Minor | test | Jinghui Wang | Jinghui Wang
HADOOP-9981 | globStatus should minimize its listStatus and getFileStatus calls | Critical | . | Kihwal Lee | Colin P. McCabe
MAPREDUCE-5514 | TestRMContainerAllocator fails on trunk | Blocker | . | Zhijie Shen | Zhijie Shen
HADOOP-10006 | Compilation failure in trunk for o.a.h.fs.swift.util.JSONUtil | Blocker | fs, util | Junping Du | Junping Du
HADOOP-9964 | O.A.H.U.ReflectionUtils.printThreadInfo() is not thread-safe which cause TestHttpServer pending 10 minutes or longer. | Major | util | Junping Du | Junping Du
YARN-1268 | TestFairScheduler.testContinuousScheduling is flaky | Major | scheduler | Sandy Ryza | Sandy Ryza
HADOOP-10028 | Malformed ssl-server.xml.example | Minor | . | Jing Zhao | Haohui Mai
HDFS-5291 | Clients need to retry when Active NN is in SafeMode | Critical | ha | Arpit Gupta | Jing Zhao
HADOOP-10030 | FsShell -put/copyFromLocal should support Windows local path | Major | . | Chuan Liu | Chuan Liu
YARN-1284 | LCE: Race condition leaves dangling cgroups entries for killed containers | Blocker | nodemanager | Alejandro Abdelnur | Alejandro Abdelnur
YARN-461 | Fair scheduler should not accept apps with empty string queue name | Major | resourcemanager | Sandy Ryza | Wei Yan
MAPREDUCE-5569 | FloatSplitter is not generating correct splits | Major | . | Nathan Roberts | Nathan Roberts
YARN-879 | Fix tests w.r.t o.a.h.y.server.resourcemanager.Application | Major | . | Junping Du | Junping Du
HADOOP-10031 | FsShell -get/copyToLocal/moveFromLocal should support Windows local path | Major | fs | Chuan Liu | Chuan Liu
YARN-1265 | Fair Scheduler chokes on unhealthy node reconnect | Major | resourcemanager, scheduler | Sandy Ryza | Sandy Ryza
HADOOP-10029 | Specifying har file to MR job fails in secure cluster | Major | fs | Suresh Srinivas | Suresh Srinivas
HDFS-5335 | DFSOutputStream#close() keeps throwing exceptions when it is called multiple times | Major | . | Arpit Gupta | Haohui Mai
HADOOP-10039 | Add Hive to the list of projects using AbstractDelegationTokenSecretManager | Major | security | Suresh Srinivas | Haohui Mai
YARN-1300 | SLS tests fail because conf puts yarn properties in fair-scheduler.xml | Major | . | Ted Yu | Ted Yu
HDFS-5322 | HDFS delegation token not found in cache errors seen on secure HA clusters | Major | ha | Arpit Gupta | Jing Zhao
YARN-1044 | used/min/max resources do not display info in the scheduler page | Critical | resourcemanager, scheduler | Sangjin Lee | Sangjin Lee
HDFS-5329 | Update FSNamesystem#getListing() to handle inode path in startAfter token | Major | namenode, nfs | Brandon Li | Brandon Li
MAPREDUCE-5329 | APPLICATION_INIT is never sent to AuxServices other than the builtin ShuffleHandler | Major | mr-am | Avner BenHanoch | Avner BenHanoch
YARN-305 | Fair scheduler logs too many “Node offered to app:…” messages | Critical | resourcemanager | Lohit Vijayarenu | Lohit Vijayarenu
HADOOP-10040 | hadoop.cmd in UNIX format and would not run by default on Windows | Major | . | Yingda Chen | Chris Nauroth
MAPREDUCE-5546 | mapred.cmd on Windows set HADOOP_OPTS incorrectly | Major | . | Chuan Liu | Chuan Liu
YARN-1259 | In Fair Scheduler web UI, queue num pending and num active apps switched | Trivial | scheduler | Sandy Ryza | Robert Kanter
YARN-1182 | MiniYARNCluster creates and inits the RM/NM only on start() | Major | . | Karthik Kambatla | Karthik Kambatla
HDFS-5352 | Server#initLog() doesn’t close InputStream in httpfs | Minor | . | Ted Yu | Ted Yu
MAPREDUCE-5518 | Fix typo “can’t read paritions file” | Trivial | examples | Albert Chu | Albert Chu
YARN-1295 | In UnixLocalWrapperScriptBuilder, using bash -c can cause “Text file busy” errors | Major | nodemanager | Sandy Ryza | Sandy Ryza
HDFS-5283 | NN not coming out of startup safemode due to under construction blocks only inside snapshots also counted in safemode threshhold | Critical | snapshots | Vinayakumar B | Vinayakumar B
MAPREDUCE-5585 | TestCopyCommitter#testNoCommitAction Fails on JDK7 | Major | . | Jonathan Eagles | Jonathan Eagles
MAPREDUCE-5586 | TestCopyMapper#testCopyFailOnBlockSizeDifference fails when run from hadoop-tools/hadoop-distcp directory | Major | . | Jonathan Eagles | Jonathan Eagles
HDFS-5370 | Typo in Error Message: different between range in condition and range in error message | Trivial | hdfs-client | Kousuke Saruta | Kousuke Saruta
HDFS-5346 | Avoid unnecessary call to getNumLiveDataNodes() for each block during IBR processing | Major | namenode, performance | Kihwal Lee | Ravi Prakash
HDFS-4376 | Fix several race conditions in Balancer and resolve intermittent timeout of TestBalancerWithNodeGroup | Major | balancer & mover | Aaron T. Myers | Junping Du
HDFS-5375 | hdfs.cmd does not expose several snapshot commands. | Minor | tools | Chris Nauroth | Chris Nauroth
HDFS-5336 | DataNode should not output ‘StartupProgress’ metrics | Minor | namenode | Akira Ajisaka | Akira Ajisaka
HADOOP-10055 | FileSystemShell.apt.vm doc has typo “numRepicas” | Trivial | documentation | Eli Collins | Akira Ajisaka
HDFS-5374 | Remove deadcode in DFSOutputStream | Trivial | . | Suresh Srinivas | Suresh Srinivas
HDFS-5365 | Fix libhdfs compile error on FreeBSD9 | Major | build, libhdfs | Radim Kolar | Radim Kolar
MAPREDUCE-5587 | TestTextOutputFormat fails on JDK7 | Major | . | Jonathan Eagles | Jonathan Eagles
HDFS-5276 | FileSystem.Statistics got performance issue on multi-thread read/write. | Major | . | Chengxiang Li | Colin P. McCabe
YARN-1288 | Make Fair Scheduler ACLs more user friendly | Major | scheduler | Sandy Ryza | Sandy Ryza
YARN-1331 | yarn.cmd exits with NoClassDefFoundError trying to run rmadmin or logs | Trivial | client | Chris Nauroth | Chris Nauroth
YARN-1315 | TestQueueACLs should also test FairScheduler | Major | resourcemanager, scheduler | Sandy Ryza | Sandy Ryza
HDFS-5400 | DFS_CLIENT_MMAP_CACHE_THREAD_RUNS_PER_TIMEOUT constant is set to the wrong value | Major | . | Colin P. McCabe | Colin P. McCabe
MAPREDUCE-5561 | org.apache.hadoop.mapreduce.v2.app.job.impl.TestJobImpl testcase failing on trunk | Critical | . | Cindy Li | Karthik Kambatla
YARN-1183 | MiniYARNCluster shutdown takes several minutes intermittently | Major | . | Andrey Klochkov | Andrey Klochkov
HDFS-5403 | WebHdfs client cannot communicate with older WebHdfs servers post HDFS-5306 | Major | webhdfs | Aaron T. Myers | Aaron T. Myers
HADOOP-9016 | org.apache.hadoop.fs.HarFileSystem.HarFSDataInputStream.HarFsInputStream.skip(long) must never return negative value. | Minor | . | Ivan A. Veselovsky | Ivan A. Veselovsky
HDFS-5341 | Reduce fsdataset lock duration during directory scanning. | Major | datanode | qus-jiawei | qus-jiawei
HDFS-5257 | addBlock() retry should return LocatedBlock with locations else client will get AIOBE | Major | hdfs-client, namenode | Vinayakumar B | Vinayakumar B
HADOOP-10072 | TestNfsExports#testMultiMatchers fails due to non-deterministic timing around cache expiry check. | Trivial | nfs, test | Chris Nauroth | Chris Nauroth
YARN-1022 | Unnecessary INFO logs in AMRMClientAsync | Trivial | . | Bikas Saha | haosdent
YARN-1349 | yarn.cmd does not support passthrough to any arbitrary class. | Major | client | Chris Nauroth | Chris Nauroth
HDFS-5413 | hdfs.cmd does not support passthrough to any arbitrary class. | Major | scripts | Chris Nauroth | Chris Nauroth
MAPREDUCE-4680 | Job history cleaner should only check timestamps of files in old enough directories | Major | jobhistoryserver | Sandy Ryza | Robert Kanter
MAPREDUCE-5598 | TestUserDefinedCounters.testMapReduceJob is flakey | Major | test | Robert Kanter | Robert Kanter
YARN-1306 | Clean up hadoop-sls sample-conf according to YARN-1228 | Major | . | Wei Yan | Wei Yan
HDFS-5433 | When reloading fsimage during checkpointing, we should clear existing snapshottable directories | Critical | snapshots | Aaron T. Myers | Aaron T. Myers
HDFS-5432 | TestDatanodeJsp fails on Windows due to assumption that loopback address resolves to host name localhost. | Trivial | datanode, test | Chris Nauroth | Chris Nauroth
YARN-1321 | NMTokenCache is a singleton, prevents multiple AMs running in a single JVM to work correctly | Blocker | client | Alejandro Abdelnur | Alejandro Abdelnur
YARN-1343 | NodeManagers additions/restarts are not reported as node updates in AllocateResponse responses to AMs | Critical | resourcemanager | Alejandro Abdelnur | Alejandro Abdelnur
YARN-1381 | Same relaxLocality appears twice in exception message of AMRMClientImpl#checkLocalityRelaxationConflict() | Minor | . | Ted Yu | Ted Yu
HADOOP-9898 | Set SO_KEEPALIVE on all our sockets | Minor | ipc, net | Todd Lipcon | Todd Lipcon
MAPREDUCE-5604 | TestMRAMWithNonNormalizedCapabilities fails on Windows due to exceeding max path length | Minor | test | Chris Nauroth | Chris Nauroth
HDFS-5035 | getFileLinkStatus and rename do not correctly check permissions of symlinks | Major | namenode | Andrew Wang | Andrew Wang
YARN-1388 | Fair Scheduler page always displays blank fair share | Trivial | resourcemanager | Liyin Liang | Liyin Liang
HDFS-5456 | NameNode startup progress creates new steps if caller attempts to create a counter for a step that doesn’t already exist. | Critical | namenode | Chris Nauroth | Chris Nauroth
HDFS-5427 | not able to read deleted files from snapshot directly under snapshottable dir after checkpoint and NN restart | Major | snapshots | Vinayakumar B | Vinayakumar B
YARN-1374 | Resource Manager fails to start due to ConcurrentModificationException | Blocker | resourcemanager | Devaraj K | Karthik Kambatla
HDFS-5458 | Datanode failed volume threshold ignored if exception is thrown in getDataDirsFromURIs | Major | datanode | Andrew Wang | Mike Mellenthin
MAPREDUCE-5451 | MR uses LD_LIBRARY_PATH which doesn’t mean anything in Windows | Major | . | Mostafa Elhemali | Yingda Chen
HDFS-5443 | Delete 0-sized block when deleting an under-construction file that is included in snapshot | Major | snapshots | Uma Maheswara Rao G | Jing Zhao
HDFS-5468 | CacheAdmin help command does not recognize commands | Minor | tools | Stephen Chu | Stephen Chu
HDFS-5476 | Snapshot: clean the blocks/files/directories under a renamed file/directory while deletion | Major | . | Jing Zhao | Jing Zhao
HDFS-5482 | DistributedFileSystem#listPathBasedCacheDirectives must support relative paths | Major | tools | Stephen Chu | Colin P. McCabe
HADOOP-10088 | copy-nativedistlibs.sh needs to quote snappy lib dir | Major | build | Raja Aluri | Raja Aluri
MAPREDUCE-5186 | mapreduce.job.max.split.locations causes some splits created by CombineFileInputFormat to fail | Critical | job submission | Sangjin Lee | Robert Parker
YARN-1395 | Distributed shell application master launched with debug flag can hang waiting for external ls process. | Major | applications/distributed-shell | Chris Nauroth | Chris Nauroth
YARN-1400 | yarn.cmd uses HADOOP_RESOURCEMANAGER_OPTS. Should be YARN_RESOURCEMANAGER_OPTS. | Trivial | resourcemanager | Raja Aluri | Raja Aluri
HDFS-5425 | Renaming underconstruction file with snapshots can make NN failure on restart | Major | namenode, snapshots | sathish | Jing Zhao
HDFS-5471 | CacheAdmin -listPools fails when user lacks permissions to view all pools | Major | tools | Stephen Chu | Andrew Wang
HADOOP-10093 | hadoop-env.cmd sets HADOOP_CLIENT_OPTS with a max heap size that is too small. | Major | conf | shanyu zhao | shanyu zhao
YARN-1386 | NodeManager mistakenly loses resources and relocalizes them | Critical | nodemanager | Jason Lowe | Jason Lowe
MAPREDUCE-5613 | DefaultSpeculator holds and checks hashmap that is always empty | Major | applicationmaster | Gera Shegalov | Gera Shegalov
MAPREDUCE-5431 | Missing pom dependency in MR-client | Major | build | Timothy St. Clair | Timothy St. Clair
HDFS-5075 | httpfs-config.sh calls out incorrect env script name | Major | . | Timothy St. Clair | Timothy St. Clair
HDFS-5474 | Deletesnapshot can make Namenode in safemode on NN restarts. | Major | snapshots | Uma Maheswara Rao G | sathish
HADOOP-10078 | KerberosAuthenticator always does SPNEGO | Minor | security | Robert Kanter | Robert Kanter
HDFS-5504 | In HA mode, OP_DELETE_SNAPSHOT is not decrementing the safemode threshold, leads to NN safemode. | Major | snapshots | Vinayakumar B | Vinayakumar B
MAPREDUCE-5481 | Enable uber jobs to have multiple reducers | Blocker | mrv2, test | Jason Lowe | Sandy Ryza
HDFS-4995 | Make getContentSummary() less expensive | Major | namenode | Kihwal Lee | Kihwal Lee
HADOOP-10094 | NPE in GenericOptionsParser#preProcessForWindows() | Trivial | util | Enis Soztutar | Enis Soztutar
MAPREDUCE-5616 | MR Client-AppMaster RPC max retries on socket timeout is too high. | Major | client | Chris Nauroth | Chris Nauroth
YARN-1401 | With zero sleep-delay-before-sigkill.ms, no signal is ever sent | Major | nodemanager | Gera Shegalov | Gera Shegalov
HDFS-5438 | Flaws in block report processing can cause data loss | Critical | namenode | Kihwal Lee | Kihwal Lee
HADOOP-10100 | MiniKDC shouldn’t use apacheds-all artifact | Major | . | Robert Kanter | Robert Kanter
MAPREDUCE-5373 | TestFetchFailure.testFetchFailureMultipleReduces could fail intermittently | Major | . | Chuan Liu | Jonathan Eagles
HDFS-5372 | In FSNamesystem, hasReadLock() returns false if the current thread holds the write lock | Major | namenode | Tsz Wo Nicholas Sze | Vinayakumar B
YARN-1419 | TestFifoScheduler.testAppAttemptMetrics fails intermittently under jdk7 | Minor | scheduler | Jonathan Eagles | Jonathan Eagles
HDFS-5512 | CacheAdmin -listPools fails with NPE when user lacks permissions to view all pools | Major | caching, tools | Stephen Chu | Andrew Wang
HDFS-5073 | TestListCorruptFileBlocks fails intermittently | Minor | test | Kihwal Lee | Arpit Agarwal
HDFS-5428 | under construction files deletion after snapshot+checkpoint+nn restart leads nn safemode | Major | snapshots | Vinayakumar B | Jing Zhao
YARN-584 | In scheduler web UIs, queues unexpand on refresh | Major | scheduler | Sandy Ryza | Harshit Daga
HDFS-5513 | CacheAdmin commands fail when using . as the path | Minor | caching, tools | Stephen Chu | Andrew Wang
YARN-1407 | RM Web UI and REST APIs should uniformly use YarnApplicationState | Major | . | Sandy Ryza | Sandy Ryza
HDFS-4516 | Client crash after block allocation and NN switch before lease recovery for the same file can cause readers to fail forever | Critical | namenode | Uma Maheswara Rao G | Vinayakumar B
HDFS-5014 | BPOfferService#processCommandFromActor() synchronization on namenode RPC call delays IBR to Active NN, if Stanby NN is unstable | Major | datanode, ha | Vinayakumar B | Vinayakumar B
YARN-1425 | TestRMRestart fails because MockRM.waitForState(AttemptId) uses current attempt instead of the attempt passed as argument | Major | . | Omkar Vinit Joshi | Omkar Vinit Joshi
YARN-1053 | Diagnostic message from ContainerExitEvent is ignored in ContainerImpl | Blocker | . | Omkar Vinit Joshi | Omkar Vinit Joshi
HADOOP-9114 | After defined the dfs.checksum.type as the NULL, write file and hflush will through java.lang.ArrayIndexOutOfBoundsException | Minor | . | liuyang | sathish
MAPREDUCE-5631 | TestJobEndNotifier.testNotifyRetries fails with Should have taken more than 5 seconds in jdk7 | Major | . | Jonathan Eagles | Jonathan Eagles
YARN-1320 | Custom log4j properties in Distributed shell does not work properly. | Major | applications/distributed-shell | Tassapol Athiapinya | Xuan Gong
HDFS-5407 | Fix typos in DFSClientCache | Trivial | . | Haohui Mai | Haohui Mai
HDFS-5544 | Adding Test case For Checking dfs.checksum type as NULL value | Minor | hdfs-client | sathish | sathish
HDFS-5552 | Fix wrong information of “Cluster summay” in dfshealth.html | Major | namenode | Shinichi Yamashita | Haohui Mai
HDFS-5533 | Symlink delete/create should be treated as DELETE/CREATE in snapshot diff report | Minor | snapshots | Binglin Chang | Binglin Chang
HADOOP-10126 | LightWeightGSet log message is confusing : “2.0% max memory = 2.0 GB” | Minor | util | Vinayakumar B | Vinayakumar B
YARN-1416 | InvalidStateTransitions getting reported in multiple test cases even though they pass | Major | . | Omkar Vinit Joshi | Jian He
YARN-1314 | Cannot pass more than 1 argument to shell command | Major | applications/distributed-shell | Tassapol Athiapinya | Xuan Gong
HDFS-5562 | TestCacheDirectives and TestFsDatasetCache should stub out native mlock | Major | test | Akira Ajisaka | Colin P. McCabe
YARN-1241 | In Fair Scheduler, maxRunningApps does not work for non-leaf queues | Major | . | Sandy Ryza | Sandy Ryza
HADOOP-10135 | writes to swift fs over partition size leave temp files and empty output file | Major | fs | David Dobbins | David Dobbins
HDFS-5581 | NameNodeFsck should use only one instance of BlockPlacementPolicy | Major | namenode | Vinayakumar B | Vinayakumar B
HADOOP-10130 | RawLocalFS::LocalFSFileInputStream.pread does not track FS::Statistics | Minor | . | Binglin Chang | Binglin Chang
HDFS-5557 | Write pipeline recovery for the last packet in the block may cause rejection of valid replicas | Critical | . | Kihwal Lee | Kihwal Lee
HDFS-5526 | Datanode cannot roll back to previous layout version | Blocker | datanode | Tsz Wo Nicholas Sze | Kihwal Lee
HDFS-5560 | Trash configuration log statements prints incorrect units | Major | . | Josh Elser | Josh Elser
HDFS-5558 | LeaseManager monitor thread can crash if the last block is complete but another block is not. | Major | . | Kihwal Lee | Kihwal Lee
HADOOP-10127 | Add ipc.client.connect.retry.interval to control the frequency of connection retries | Major | ipc | Karthik Kambatla | Karthik Kambatla
MAPREDUCE-5645 | TestFixedLengthInputFormat fails with native libs | Major | . | Jonathan Eagles | Mit Desai
YARN-1454 | TestRMRestart.testRMDelegationTokenRestoredOnRMRestart is failing intermittently | Critical | . | Jian He | Karthik Kambatla
HDFS-5555 | CacheAdmin commands fail when first listed NameNode is in Standby | Major | caching | Stephen Chu | Jimmy Xiang
HADOOP-10129 | Distcp may succeed when it fails | Critical | tools/distcp | Daryn Sharp | Daryn Sharp
HADOOP-10081 | Client.setupIOStreams can leak socket resources on exception or error | Critical | ipc | Jason Lowe | Tsuyoshi Ozawa
HADOOP-10058 | TestMetricsSystemImpl#testInitFirstVerifyStopInvokedImmediately fails on trunk | Minor | metrics | Akira Ajisaka | Chen He
YARN-1438 | When a container fails, the text of the exception isn’t included in the diagnostics | Major | nodemanager | Steve Loughran | Steve Loughran
YARN-546 | Allow disabling the Fair Scheduler event log | Major | scheduler | Lohit Vijayarenu | Sandy Ryza
HDFS-5590 | Block ID and generation stamp may be reused when persistBlocks is set to false | Major | . | Jing Zhao | Jing Zhao
YARN-1450 | TestUnmanagedAMLauncher#testDSShell fails on trunk | Major | applications/distributed-shell | Akira Ajisaka | Binglin Chang
HADOOP-10142 | Avoid groups lookup for unprivileged users such as “dr.who” | Major | . | Vinayakumar B | Vinayakumar B
HDFS-5353 | Short circuit reads fail when dfs.encrypt.data.transfer is enabled | Blocker | . | Haohui Mai | Colin P. McCabe
MAPREDUCE-5656 | bzip2 codec can drop records when reading data in splits | Critical | . | Jason Lowe | Jason Lowe
MAPREDUCE-5052 | Job History UI and web services confusing job start time and job submit time | Critical | jobhistoryserver, webapps | Kendall Thrapp | Chen He
HDFS-5074 | Allow starting up from an fsimage checkpoint in the middle of a segment | Major | ha, namenode | Todd Lipcon | Todd Lipcon
HDFS-5580 | Infinite loop in Balancer.waitForMoveCompletion | Major | . | Binglin Chang | Binglin Chang
YARN-1491 | Upgrade JUnit3 TestCase to JUnit 4 | Trivial | . | Jonathan Eagles | Chen He
HADOOP-10087 | UserGroupInformation.getGroupNames() fails to return primary group first when JniBasedUnixGroupsMappingWithFallback is used | Major | security | Yu Gao | Colin P. McCabe
YARN-408 | Capacity Scheduler delay scheduling should not be disabled by default | Minor | scheduler | Mayank Bansal | Mayank Bansal
HDFS-5023 | TestSnapshotPathINodes.testAllowSnapshot is failing with jdk7 | Major | snapshots, test | Ravi Prakash | Mit Desai
HDFS-4201 | NPE in BPServiceActor#sendHeartBeat | Critical | namenode | Eli Collins | Jimmy Xiang
MAPREDUCE-5674 | Missing start and finish time in mapred.JobStatus | Major | client | Chuan Liu | Chuan Liu
HADOOP-10162 | Fix symlink-related test failures in TestFileContextResolveAfs and TestStat in branch-2 | Major | . | Mit Desai | Mit Desai
HADOOP-8753 | LocalDirAllocator throws “ArithmeticException: / by zero” when there is no available space on configured local dir | Minor | . | Nishan Shetty | Benoy Antony
YARN-1435 | Distributed Shell should not run other commands except “sh”, and run the custom script at the same time. | Major | applications/distributed-shell | Tassapol Athiapinya | Xuan Gong
HDFS-5592 | “DIR* completeFile: /file is closed by DFSClient_” should be logged only for successful closure of the file. | Major | . | Vinayakumar B | Vinayakumar B
MAPREDUCE-5623 | TestJobCleanup fails because of RejectedExecutionException and NPE. | Major | . | Tsuyoshi Ozawa | Jason Lowe
HDFS-5666 | Fix inconsistent synchronization in BPOfferService | Minor | namenode | Colin P. McCabe | Jimmy Xiang
YARN-1505 | WebAppProxyServer should not set localhost as YarnConfiguration.PROXY_ADDRESS by itself | Blocker | . | Xuan Gong | Xuan Gong
YARN-1145 | Potential file handle leak in aggregated logs web ui | Major | . | Rohith Sharma K S | Rohith Sharma K S
HADOOP-10106 | Incorrect thread name in RPC log messages | Minor | . | Ming Ma | Ming Ma
MAPREDUCE-5679 | TestJobHistoryParsing has race condition | Major | . | Liyin Liang | Liyin Liang
HADOOP-10168 | fix javadoc of ReflectionUtils.copy | Major | . | Thejas M Nair | Thejas M Nair
YARN-1451 | TestResourceManager relies on the scheduler assigning multiple containers in a single node update | Minor | . | Sandy Ryza | Sandy Ryza
HDFS-5657 | race condition causes writeback state error in NFS gateway | Major | nfs | Brandon Li | Brandon Li
HDFS-5305 | Add https support in HDFS | Major | . | Suresh Srinivas | Suresh Srinivas
HADOOP-10171 | TestRPC fails intermittently on jkd7 | Major | . | Mit Desai | Mit Desai
HDFS-5661 | Browsing FileSystem via web ui, should use datanode’s fqdn instead of ip address | Major | security | Benoy Antony | Benoy Antony
HDFS-5540 | Fix intermittent failure in TestBlocksWithNotEnoughRacks | Minor | . | Binglin Chang | Binglin Chang
HDFS-5681 | renewLease should not hold fsn write lock | Major | namenode | Daryn Sharp | Daryn Sharp
YARN-1180 | Update capacity scheduler docs to include types on the configs | Trivial | capacityscheduler | Thomas Graves | Chen He
HDFS-5691 | Fix typo in ShortCircuitLocalRead document | Minor | documentation | Akira Ajisaka | Akira Ajisaka
MAPREDUCE-5550 | Task Status message (reporter.setStatus) not shown in UI with Hadoop 2.0 | Major | . | Vrushali C | Gera Shegalov
HDFS-5690 | DataNode fails to start in secure mode when dfs.http.policy equals to HTTP_ONLY | Blocker | . | Haohui Mai | Haohui Mai
HADOOP-10175 | Har files system authority should preserve userinfo | Major | fs | Chuan Liu | Chuan Liu
HADOOP-10090 | Jobtracker metrics not updated properly after execution of a mapreduce job | Major | metrics | Ivan Mitic | Ivan Mitic
YARN-1527 | yarn rmadmin command prints wrong usage info: | Trivial | . | Jian He | Akira Ajisaka
YARN-1541 | Invalidate AM Host/Port when app attempt is done so that in the mean-while client doesn’t get wrong information. | Major | . | Jian He | Jian He
MAPREDUCE-5694 | MR AM container syslog is empty | Major | . | Mohammad Kamrul Islam | Mohammad Kamrul Islam
HDFS-5675 | Add Mkdirs operation to NNThroughputBenchmark | Minor | benchmarks | Plamen Jeliazkov | Plamen Jeliazkov
HDFS-5582 | hdfs getconf -excludeFile or -includeFile always failed | Minor | . | Henry Hung | sathish
HDFS-5701 | Fix the CacheAdmin -addPool -maxTtl option name | Minor | caching, tools | Stephen Chu | Stephen Chu
MAPREDUCE-5685 | getCacheFiles() api doesn’t work in WrappedReducer.java due to typo | Blocker | client | Yi Song | Yi Song
YARN-1522 | TestApplicationCleanup.testAppCleanup occasionally fails | Major | . | Liyin Liang | Liyin Liang
HDFS-5671 | Fix socket leak in DFSInputStream#getBlockReader | Critical | hdfs-client | JamesLi | JamesLi
HADOOP-10147 | Upgrade to commons-logging 1.1.3 to avoid potential deadlock in MiniDFSCluster | Minor | build | Eric Sirianni | Steve Loughran
HDFS-5659 | dfsadmin -report doesn’t output cache information properly | Major | caching | Akira Ajisaka | Andrew Wang
MAPREDUCE-5689 | MRAppMaster does not preempt reducers when scheduled maps cannot be fulfilled | Critical | . | Lohit Vijayarenu | Lohit Vijayarenu
HADOOP-10193 | hadoop-auth’s PseudoAuthenticationHandler can consume getInputStream | Minor | security | Gregory Chanan | Gregory Chanan
HDFS-5719 | FSImage#doRollback() should close prevState before return | Minor | namenode | Ted Yu | Ted Yu
YARN-1409 | NonAggregatingLogHandler can throw RejectedExecutionException | Major | . | Tsuyoshi Ozawa | Tsuyoshi Ozawa
HDFS-5649 | Unregister NFS and Mount service when NFS gateway is shutting down | Major | nfs | Brandon Li | Brandon Li
YARN-1293 | TestContainerLaunch.testInvalidEnvSyntaxDiagnostics fails on trunk | Major | . | Tsuyoshi Ozawa | Tsuyoshi Ozawa
HADOOP-10214 | Fix multithreaded correctness warnings in ActiveStandbyElector | Major | ha | Liang Xie | Liang Xie
HDFS-5449 | WebHdfs compatibility broken between 2.2 and 1.x / 23.x | Blocker | . | Kihwal Lee | Kihwal Lee
YARN-1138 | yarn.application.classpath is set to point to $HADOOP_CONF_DIR etc., which does not work on Windows | Major | api | Yingda Chen | Chuan Liu
HADOOP-9420 | Add percentile or max metric for rpcQueueTime, processing time | Major | ipc, metrics | Todd Lipcon | Liang Xie
HDFS-5756 | hadoopRzOptionsSetByteBufferPool does not accept NULL argument, contrary to docs | Major | libhdfs | Colin P. McCabe | Colin P. McCabe
HADOOP-10178 | Configuration deprecation always emit “deprecated” warnings when a new key is used | Major | conf | shanyu zhao | shanyu zhao
HDFS-5747 | BlocksMap.getStoredBlock(..) and BlockInfoUnderConstruction.addReplicaIfNotPresent(..) may throw NullPointerException | Minor | namenode | Tsz Wo Nicholas Sze | Arpit Agarwal
HADOOP-10223 | MiniKdc#main() should close the FileReader it creates | Minor | . | Ted Yu | Ted Yu
YARN-888 | clean up POM dependencies | Major | . | Alejandro Abdelnur | Alejandro Abdelnur
HDFS-5710 | FSDirectory#getFullPathName should check inodes against null | Major | . | Ted Yu | Uma Maheswara Rao G
HDFS-5579 | Under construction files make DataNode decommission take very long hours | Major | namenode | yunjiong zhao | yunjiong zhao
HADOOP-10234 | “hadoop.cmd jar” does not propagate exit code. | Major | scripts | Chris Nauroth | Chris Nauroth
YARN-1603 | Remove two *.orig files which were unexpectedly committed | Trivial | . | Zhijie Shen | Zhijie Shen
YARN-1601 | 3rd party JARs are missing from hadoop-dist output | Major | . | Alejandro Abdelnur | Alejandro Abdelnur
HADOOP-10236 | Fix typo in o.a.h.ipc.Client#checkResponse | Trivial | . | Akira Ajisaka | Akira Ajisaka
HDFS-5762 | BlockReaderLocal doesn’t return -1 on EOF when doing zero-length reads | Major | . | Colin P. McCabe | Colin P. McCabe
HDFS-5766 | In DFSInputStream, do not add datanode to deadNodes after InvalidEncryptionKeyException in fetchBlockByteRange | Major | hdfs-client | Liang Xie | Liang Xie
HDFS-5704 | Change OP_UPDATE_BLOCKS with a new OP_ADD_BLOCK | Major | namenode | Suresh Srinivas | Jing Zhao
HADOOP-10125 | no need to process RPC request if the client connection has been dropped | Major | ipc | Ming Ma | Ming Ma
YARN-1351 | Invalid string format in Fair Scheduler log warn message | Trivial | resourcemanager | Konstantin Weitz | Konstantin Weitz
HDFS-5777 | Update LayoutVersion for the new editlog op OP_ADD_BLOCK | Major | namenode | Jing Zhao | Jing Zhao
MAPREDUCE-5724 | JobHistoryServer does not start if HDFS is not running | Critical | jobhistoryserver | Alejandro Abdelnur | Alejandro Abdelnur
YARN-1608 | LinuxContainerExecutor has a few DEBUG messages at INFO level | Trivial | nodemanager | Karthik Kambatla | Karthik Kambatla
HADOOP-10146 | Workaround JDK7 Process fd close bug | Critical | util | Daryn Sharp | Daryn Sharp
MAPREDUCE-5650 | Job fails when hprof mapreduce.task.profile.map/reduce.params is specified | Major | mrv2 | Gera Shegalov | Gera Shegalov
HADOOP-10235 | Hadoop tarball has 2 versions of stax-api JARs | Major | build | Alejandro Abdelnur | Alejandro Abdelnur
HADOOP-10240 | Windows build instructions incorrectly state requirement of protoc 2.4.1 instead of 2.5.0 | Trivial | documentation | Chris Nauroth | Chris Nauroth
HDFS-5800 | Typo: soft-limit for hard-limit in DFSClient | Trivial | hdfs-client | Kousuke Saruta | Kousuke Saruta
MAPREDUCE-5729 | mapred job -list throws NPE | Critical | mrv2 | Karthik Kambatla | Karthik Kambatla
MAPREDUCE-5725 | TestNetworkedJob relies on the Capacity Scheduler | Major | . | Sandy Ryza | Sandy Ryza
HADOOP-10110 | hadoop-auth has a build break due to missing dependency | Blocker | build | Chuan Liu | Chuan Liu
MAPREDUCE-5693 | Restore MRv1 behavior for log flush | Major | mrv2 | Gera Shegalov | Gera Shegalov
HDFS-5434 | Write resiliency for replica count 1 | Minor | namenode | Taylor, Buddy |
HADOOP-10252 | HttpServer can’t start if hostname is not specified | Major | . | Jimmy Xiang | Jimmy Xiang
YARN-1624 | QueuePlacementPolicy format is not easily readable via a JAXB parser | Major | scheduler | Aditya Acharya | Aditya Acharya
YARN-1607 | TestRM expects the capacity scheduler | Major | . | Sandy Ryza | Sandy Ryza
HDFS-5806 | balancer should set SoTimeout to avoid indefinite hangs | Major | balancer & mover | Nathan Roberts | Nathan Roberts
MAPREDUCE-5723 | MR AM container log can be truncated or empty | Blocker | applicationmaster | Mohammad Kamrul Islam | Mohammad Kamrul Islam
HDFS-5789 | Some of snapshot APIs missing checkOperation double check in fsn | Major | namenode | Uma Maheswara Rao G | Uma Maheswara Rao G
HDFS-5728 | [Diskfull] Block recovery will fail if the metafile does not have crc for all chunks of the block | Critical | datanode | Vinayakumar B | Vinayakumar B
HDFS-5343 | When cat command is issued on snapshot files getting unexpected result | Major | hdfs-client | sathish | sathish
HADOOP-10203 | Connection leak in Jets3tNativeFileSystemStore#retrieveMetadata | Major | fs/s3 | Andrei Savu | Andrei Savu
HADOOP-9982 | Fix dead links in hadoop site docs | Major | documentation | Akira Ajisaka | Akira Ajisaka
HADOOP-10212 | Incorrect compile command in Native Library document | Major | documentation | Akira Ajisaka | Akira Ajisaka
HDFS-5297 | Fix dead links in HDFS site documents | Major | documentation | Akira Ajisaka | Akira Ajisaka
HADOOP-10250 | VersionUtil returns wrong value when comparing two versions | Major | . | Yongjun Zhang | Yongjun Zhang
HADOOP-10288 | Explicit reference to Log4JLogger breaks non-log4j users | Major | util | Todd Lipcon | Todd Lipcon
HDFS-5830 | WebHdfsFileSystem.getFileBlockLocations throws IllegalArgumentException when accessing another cluster. | Blocker | caching, hdfs-client | Yongjun Zhang | Yongjun Zhang
HADOOP-9830 | Typo at http://hadoop.apache.org/docs/current/ | Trivial | documentation | Dmitry Lysnichenko | Kousuke Saruta
HADOOP-10255 | Rename HttpServer to HttpServer2 to retain older HttpServer in branch-2 for compatibility | Blocker | . | Haohui Mai | Haohui Mai
HADOOP-10292 | Restore HttpServer from branch-2.2 in branch-2 | Major | . | Haohui Mai | Haohui Mai
YARN-1629 | IndexOutOfBoundsException in Fair Scheduler MaxRunningAppsEnforcer | Major | scheduler | Sandy Ryza | Sandy Ryza
YARN-1630 | Introduce timeout for async polling operations in YarnClientImpl | Major | client | Aditya Acharya | Aditya Acharya
HADOOP-10291 | TestSecurityUtil#testSocketAddrWithIP fails | Major | . | Mit Desai | Mit Desai
HDFS-5844 | Fix broken link in WebHDFS.apt.vm | Minor | documentation | Akira Ajisaka | Akira Ajisaka
YARN-1600 | RM does not startup when security is enabled without spnego configured | Blocker | resourcemanager | Jason Lowe | Haohui Mai
HDFS-5842 | Cannot create hftp filesystem when using a proxy user ugi and a doAs on a secure cluster | Major | security | Arpit Gupta | Jing Zhao
HDFS-5845 | SecondaryNameNode dies when checkpointing with cache pools | Blocker | namenode | Andrew Wang | Andrew Wang
HADOOP-10305 | Add “rpc.metrics.quantile.enable” and “rpc.metrics.percentiles.intervals” to core-default.xml | Major | metrics | Akira Ajisaka | Akira Ajisaka
HADOOP-10310 | SaslRpcServer should be initialized even when no secret manager present | Blocker | security | Aaron T. Myers | Aaron T. Myers
HADOOP-10317 | Rename branch-2.3 release version from 2.4.0-SNAPSHOT to 2.3.0-SNAPSHOT | Major | . | Andrew Wang | Andrew Wang
HADOOP-10313 | Script and jenkins job to produce Hadoop release artifacts | Major | build | Alejandro Abdelnur | Alejandro Abdelnur
HADOOP-10311 | Cleanup vendor names from the code base | Blocker | . | Suresh Srinivas | Alejandro Abdelnur
HADOOP-10273 | Fix ‘mvn site’ | Major | build | Arpit Agarwal | Arpit Agarwal
HDFS-5876 | SecureDataNodeStarter does not pick up configuration in hdfs-site.xml | Major | datanode | Haohui Mai | Haohui Mai
HDFS-5873 | dfs.http.policy should have higher precedence over dfs.https.enable | Major | . | Yesha Vora | Haohui Mai
MAPREDUCE-5743 | TestRMContainerAllocator is failing | Major | . | Ted Yu | Ted Yu
YARN-1628 | TestContainerManagerSecurity fails on trunk | Major | . | Mit Desai | Vinod Kumar Vavilapalli
HADOOP-10112 | har file listing doesn’t work with wild card | Major | tools | Brandon Li | Brandon Li
MAPREDUCE-5744 | Job hangs because RMContainerAllocator$AssignedRequests.preemptReduce() violates the comparator contract | Blocker | . | Sangjin Lee | Gera Shegalov
HDFS-5837 | dfs.namenode.replication.considerLoad does not consider decommissioned nodes | Major | namenode | Bryan Beaudreault | Tao Luo
HDFS-5921 | Cannot browse file system via NN web UI if any directory has the sticky bit set | Critical | namenode | Aaron T. Myers | Aaron T. Myers
YARN-1330 | Fair Scheduler: defaultQueueSchedulingPolicy does not take effect | Major | scheduler | Sandy Ryza | Sandy Ryza
HADOOP-9478 | Fix race conditions during the initialization of Configuration related to deprecatedKeyMap | Major | conf | Dongyong Wang | Colin P. McCabe

### TESTS:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
MAPREDUCE-5084 | fix coverage org.apache.hadoop.mapreduce.v2.app.webapp and org.apache.hadoop.mapreduce.v2.hs.webapp | Major | . | Aleksey Gorshkov | Aleksey Gorshkov
HADOOP-9866 | convert hadoop-auth testcases requiring kerberos to use minikdc | Major | test | Alejandro Abdelnur | Wei Yan
HDFS-4491 | Parallel testing HDFS | Major | test | Tsuyoshi Ozawa | Andrey Klochkov
YARN-1119 | Add ClusterMetrics checks to tho TestRMNodeTransitions tests | Major | resourcemanager | Robert Parker | Mit Desai
HDFS-4517 | Cover class RemoteBlockReader with unit tests | Major | . | Vadim Bondarev | Ivan A. Veselovsky
HDFS-4512 | Cover package org.apache.hadoop.hdfs.server.common with tests | Major | . | Vadim Bondarev | Vadim Bondarev
HADOOP-9063 | enhance unit-test coverage of class org.apache.hadoop.fs.FileUtil | Minor | . | Ivan A. Veselovsky | Ivan A. Veselovsky
HADOOP-9254 | Cover packages org.apache.hadoop.util.bloom, org.apache.hadoop.util.hash | Major | . | Vadim Bondarev | Vadim Bondarev
HADOOP-9225 | Cover package org.apache.hadoop.compress.Snappy | Major | . | Vadim Bondarev | Andrey Klochkov
HADOOP-9199 | Cover package org.apache.hadoop.io with unit tests | Major | . | Vadim Bondarev | Andrey Klochkov
HDFS-4510 | Cover classes ClusterJspHelper/NamenodeJspHelper with unit tests | Major | . | Vadim Bondarev | Andrey Klochkov
MAPREDUCE-5102 | fix coverage org.apache.hadoop.mapreduce.lib.db and org.apache.hadoop.mapred.lib.db | Major | . | Aleksey Gorshkov | Andrey Klochkov
HDFS-5130 | Add test for snapshot related FsShell and DFSAdmin commands | Minor | test | Binglin Chang | Binglin Chang
HADOOP-9078 | enhance unit-test coverage of class org.apache.hadoop.fs.FileContext | Major | . | Ivan A. Veselovsky | Ivan A. Veselovsky
HDFS-4511 | Cover package org.apache.hadoop.hdfs.tools with unit test | Major | . | Vadim Bondarev | Andrey Klochkov
HADOOP-9291 | enhance unit-test coverage of package o.a.h.metrics2 | Major | . | Ivan A. Veselovsky | Ivan A. Veselovsky
HADOOP-9598 | Improve code coverage of RMAdminCLI | Major | . | Aleksey Gorshkov | Andrey Klochkov
YARN-1357 | TestContainerLaunch.testContainerEnvVariables fails on Windows | Minor | nodemanager | Chuan Liu | Chuan Liu
YARN-1358 | TestYarnCLI fails on Windows due to line endings | Minor | client | Chuan Liu | Chuan Liu
MAPREDUCE-5610 | TestSleepJob fails in jdk7 | Major | . | Jonathan Eagles | Jonathan Eagles
MAPREDUCE-5625 | TestFixedLengthInputFormat fails in jdk7 environment | Major | . | Jonathan Eagles | Mariappan Asokan
MAPREDUCE-5632 | TestRMContainerAllocator#testUpdatedNodes fails | Major | . | Ted Yu | Jonathan Eagles
MAPREDUCE-5687 | TestYARNRunner#testResourceMgrDelegate fails with NPE after YARN-1446 | Major | . | Ted Yu | Jian He
HDFS-5679 | TestCacheDirectives should handle the case where native code is not available | Major | . | Ted Yu | Andrew Wang
YARN-1463 | Tests should avoid starting http-server where possible or creates spnego keytab/principals | Major | . | Ted Yu | Vinod Kumar Vavilapalli
YARN-1549 | TestUnmanagedAMLauncher#testDSShell fails in trunk | Major | . | Ted Yu | haosdent
YARN-1560 | TestYarnClient#testAMMRTokens fails with null AMRM token | Major | . | Ted Yu | Ted Yu
HADOOP-10207 | TestUserGroupInformation#testLogin is flaky | Minor | . | Jimmy Xiang | Jimmy Xiang

### SUB-TASKS:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
YARN-427 | Coverage fix for org.apache.hadoop.yarn.server.api.* | Major | . | Aleksey Gorshkov | Aleksey Gorshkov
YARN-478 | fix coverage org.apache.hadoop.yarn.webapp.log | Major | . | Aleksey Gorshkov | Aleksey Gorshkov
HADOOP-9417 | Support for symlink resolution in LocalFileSystem / RawLocalFileSystem | Major | fs | Andrew Wang | Andrew Wang
HADOOP-9748 | Reduce blocking on UGI.ensureInitialized | Critical | security | Daryn Sharp | Daryn Sharp
MAPREDUCE-5356 | Ability to refresh aggregated log retention period and check interval | Major | jobhistoryserver | Ashwin Shankar | Ashwin Shankar
MAPREDUCE-5386 | Ability to refresh history server job retention and job cleaner settings | Major | jobhistoryserver | Ashwin Shankar | Ashwin Shankar
MAPREDUCE-5411 | Refresh size of loaded job cache on history server | Major | jobhistoryserver | Ashwin Shankar | Ashwin Shankar
YARN-649 | Make container logs available over HTTP in plain text | Major | nodemanager | Sandy Ryza | Sandy Ryza
YARN-1098 | Separate out RM services into “Always On” and “Active” | Major | resourcemanager | Karthik Kambatla | Karthik Kambatla
HDFS-4096 | Add snapshot information to namenode WebUI | Major | datanode, namenode | Jing Zhao | Haohui Mai
YARN-1027 | Implement RMHAProtocolService | Major | . | Bikas Saha | Karthik Kambatla
YARN-353 | Add Zookeeper-based store implementation for RMStateStore | Major | resourcemanager | Hitesh Shah | Karthik Kambatla
HDFS-5239 | Allow FSNamesystem lock fairness to be configurable | Major | namenode | Daryn Sharp | Daryn Sharp
HDFS-5240 | Separate formatting from logging in the audit logger API | Major | namenode | Daryn Sharp | Daryn Sharp
YARN-819 | ResourceManager and NodeManager should check for a minimum allowed version | Major | nodemanager, resourcemanager | Robert Parker | Robert Parker
MAPREDUCE-4421 | Run MapReduce framework via the distributed cache | Major | . | Arun C Murthy | Jason Lowe
YARN-425 | coverage fix for yarn api | Major | . | Aleksey Gorshkov | Aleksey Gorshkov
YARN-1232 | Configuration to support multiple RMs | Major | resourcemanager | Karthik Kambatla | Karthik Kambatla
HDFS-5307 | Support both HTTP and HTTPS in jsp pages | Major | . | Haohui Mai | Haohui Mai
YARN-465 | fix coverage org.apache.hadoop.yarn.server.webproxy | Major | . | Aleksey Gorshkov | Andrey Klochkov
HDFS-5317 | Go back to DFS Home link does not work on datanode webUI | Critical | . | Suresh Srinivas | Haohui Mai
HDFS-5316 | Namenode ignores the default https port | Critical | . | Suresh Srinivas | Haohui Mai
HDFS-5281 | COMMIT request should not block | Major | nfs | Brandon Li | Brandon Li
YARN-976 | Document the meaning of a virtual core | Major | documentation | Sandy Ryza | Sandy Ryza
YARN-1283 | Invalid ‘url of job’ mentioned in Job output with yarn.http.policy=HTTPS_ONLY | Major | . | Yesha Vora | Omkar Vinit Joshi
HDFS-5337 | should do hsync for a commit request even there is no pending writes | Major | nfs | Brandon Li | Brandon Li
YARN-7 | Add support for DistributedShell to ask for CPUs along with memory | Major | . | Arun C Murthy | Junping Du
HDFS-5342 | Provide more information in the FSNamesystem JMX interfaces | Major | . | Haohui Mai | Haohui Mai
HDFS-5330 | fix readdir and readdirplus for large directories | Major | nfs | Brandon Li | Brandon Li
HDFS-5334 | Implement dfshealth.jsp in HTML pages | Major | . | Haohui Mai | Haohui Mai
HDFS-5379 | Update links to datanode information in dfshealth.html | Major | . | Haohui Mai | Haohui Mai
YARN-1185 | FileSystemRMStateStore can leave partial files that prevent subsequent recovery | Major | resourcemanager | Jason Lowe | Omkar Vinit Joshi
HADOOP-10052 | Temporarily disable client-side symlink resolution | Major | fs | Andrew Wang | Andrew Wang
HDFS-5382 | Implement the UI of browsing filesystems in HTML 5 page | Major | . | Haohui Mai | Haohui Mai
HDFS-5347 | add HDFS NFS user guide | Major | documentation | Brandon Li | Brandon Li
HDFS-4885 | Update verifyBlockPlacement() API in BlockPlacementPolicy | Major | . | Junping Du | Junping Du
YARN-1305 | RMHAProtocolService#serviceInit should handle HAUtil’s IllegalArgumentException | Major | resourcemanager | Tsuyoshi Ozawa | Tsuyoshi Ozawa
HDFS-5363 | Refactor WebHdfsFileSystem: move SPENGO-authenticated connection creation to URLConnectionFactory | Major | . | Haohui Mai | Haohui Mai
HDFS-5171 | NFS should create input stream for a file and try to share it with multiple read requests | Major | nfs | Brandon Li | Haohui Mai
YARN-1068 | Add admin support for HA operations | Major | resourcemanager | Karthik Kambatla | Karthik Kambatla
HDFS-5436 | Move HsFtpFileSystem and HFtpFileSystem into org.apache.hdfs.web | Major | . | Haohui Mai | Haohui Mai
HDFS-5386 | Add feature documentation for datanode caching. | Major | documentation | Chris Nauroth | Colin P. McCabe
YARN-891 | Store completed application information in RM state store | Major | resourcemanager | Bikas Saha | Jian He
YARN-1323 | Set HTTPS webapp address along with other RPC addresses in HAUtil | Major | . | Karthik Kambatla | Karthik Kambatla
YARN-311 | Dynamic node resource configuration: core scheduler changes | Major | graceful, resourcemanager, scheduler | Junping Du | Junping Du
HDFS-5252 | Stable write is not handled correctly in someplace | Major | nfs | Brandon Li | Brandon Li
HDFS-5364 | Add OpenFileCtx cache | Major | nfs | Brandon Li | Brandon Li
HDFS-5394 | fix race conditions in DN caching and uncaching | Major | datanode, namenode | Colin P. McCabe | Colin P. McCabe
HDFS-5325 | Remove WebHdfsFileSystem#ConnRunner | Major | . | Haohui Mai | Haohui Mai
HDFS-5469 | Add configuration property for the sub-directroy export path | Major | nfs | Brandon Li | Brandon Li
HDFS-5320 | Add datanode caching metrics | Minor | datanode | Andrew Wang | Andrew Wang
HDFS-5488 | Clean up TestHftpURLTimeout | Major | . | Haohui Mai | Haohui Mai
HDFS-5450 | better API for getting the cached blocks locations | Minor | hdfs-client | Colin P. McCabe | Andrew Wang
HDFS-5440 | Extract the logic of handling delegation tokens in HftpFileSystem to the TokenAspect class | Major | . | Haohui Mai | Haohui Mai
HADOOP-9956 | RPC listener inefficiently assigns connections to readers | Major | ipc | Daryn Sharp | Daryn Sharp
HDFS-5444 | Choose default web UI based on browser capabilities | Major | . | Haohui Mai | Haohui Mai
HDFS-5487 | Introduce unit test for TokenAspect | Major | . | Haohui Mai | Haohui Mai
YARN-1222 | Make improvements in ZKRMStateStore for fencing | Major | . | Bikas Saha | Karthik Kambatla
HDFS-5506 | Use URLConnectionFactory in DelegationTokenFetcher | Major | . | Haohui Mai | Haohui Mai
HADOOP-9955 | RPC idle connection closing is extremely inefficient | Major | ipc | Daryn Sharp | Daryn Sharp
HDFS-5489 | Use TokenAspect in WebHDFSFileSystem | Major | . | Haohui Mai | Haohui Mai
HDFS-5366 | recaching improvements | Major | namenode | Colin P. McCabe | Colin P. McCabe
HDFS-5509 | TestPathBasedCacheRequests#testReplicationFactor is flaky | Major | datanode, namenode | Andrew Wang | Andrew Wang
YARN-1411 | HA config shouldn’t affect NodeManager RPC addresses | Critical | . | Karthik Kambatla | Karthik Kambatla
HDFS-5502 | Fix HTTPS support in HsftpFileSystem | Major | . | Haohui Mai | Haohui Mai
HADOOP-10109 | Fix test failure in TestOfflineEditsViewer introduced by HADOOP-10052 | Major | test | Colin P. McCabe | Colin P. McCabe
HDFS-5519 | COMMIT handler should update the commit status after sync | Minor | nfs | Brandon Li | Brandon Li
HDFS-5393 | Serve bootstrap and jQuery locally | Minor | . | Haohui Mai | Haohui Mai
YARN-709 | verify that new jobs submitted with old RM delegation tokens after RM restart are accepted | Major | resourcemanager | Jian He | Jian He
HDFS-5520 | loading cache path directives from edit log doesn’t update nextEntryId | Major | namenode | Colin P. McCabe | Colin P. McCabe
YARN-1210 | During RM restart, RM should start a new attempt only when previous attempt exits for real | Major | . | Vinod Kumar Vavilapalli | Omkar Vinit Joshi
YARN-674 | Slow or failing DelegationToken renewals on submission itself make RM unavailable | Major | resourcemanager | Vinod Kumar Vavilapalli | Omkar Vinit Joshi
HADOOP-10107 | Server.getNumOpenConnections may throw NPE | Major | ipc | Tsz Wo Nicholas Sze | Kihwal Lee
HDFS-5511 | improve CacheManipulator interface to allow better unit testing | Major | datanode | Colin P. McCabe | Colin P. McCabe
HDFS-5525 | Inline dust templates | Major | . | Haohui Mai | Haohui Mai
HDFS-5451 | Add byte and file statistics to PathBasedCacheEntry | Major | datanode, namenode | Colin P. McCabe | Colin P. McCabe
HDFS-3987 | Support webhdfs over HTTPS | Major | . | Alejandro Abdelnur | Haohui Mai
HADOOP-10103 | update commons-lang to 2.6 | Minor | build | Steve Loughran | Akira Ajisaka
HDFS-5473 | Consistent naming of user-visible caching classes and methods | Major | datanode, namenode | Andrew Wang | Colin P. McCabe
HDFS-5543 | fix narrow race condition in TestPathBasedCacheRequests | Major | test | Colin P. McCabe | Colin P. McCabe
HDFS-5288 | Close idle connections in portmap | Major | nfs | Haohui Mai | Haohui Mai
HDFS-5538 | URLConnectionFactory should pick up the SSL related configuration by default | Major | . | Haohui Mai | Haohui Mai
HDFS-5565 | CacheAdmin help should match against non-dashed commands | Minor | caching | Andrew Wang | Andrew Wang
HDFS-5556 | add some more NameNode cache statistics, cache pool stats | Major | namenode | Colin P. McCabe | Colin P. McCabe
HDFS-5545 | Allow specifying endpoints for listeners in HttpServer | Major | . | Haohui Mai | Haohui Mai
YARN-1239 | Save version information in the state store | Major | resourcemanager | Bikas Saha | Jian He
HDFS-5430 | Support TTL on CacheDirectives | Minor | datanode, namenode | Colin P. McCabe | Andrew Wang
YARN-1318 | Promote AdminService to an Always-On service and merge in RMHAProtocolService | Blocker | resourcemanager | Karthik Kambatla | Karthik Kambatla
YARN-895 | RM crashes if it restarts while the state-store is down | Major | resourcemanager | Jian He | Jian He
HADOOP-10102 | update commons IO from 2.1 to 2.4 | Minor | build | Steve Loughran | Akira Ajisaka
HDFS-5536 | Implement HTTP policy for Namenode and DataNode | Major | . | Haohui Mai | Haohui Mai
HDFS-5514 | FSNamesystem’s fsLock should allow custom implementation | Major | namenode | Daryn Sharp | Daryn Sharp
MAPREDUCE-5409 | MRAppMaster throws InvalidStateTransitonException: Invalid event: TA_TOO_MANY_FETCH_FAILURE at KILLED for TaskAttemptImpl | Major | . | Devaraj K | Gera Shegalov
HDFS-5630 | Hook up cache directive and pool usage statistics | Major | caching, namenode | Andrew Wang | Andrew Wang
YARN-1447 | Common PB type definitions for container resizing | Major | api | Wangda Tan (No longer used) | Wangda Tan
YARN-1181 | Augment MiniYARNCluster to support HA mode | Major | . | Karthik Kambatla | Karthik Kambatla
HDFS-5312 | Generate HTTP / HTTPS URL in DFSUtil#getInfoServer() based on the configured http policy | Major | . | Haohui Mai | Haohui Mai
YARN-1378 | Implement a RMStateStore cleaner for deleting application/attempt info | Major | resourcemanager | Jian He | Jian He
YARN-1405 | RM hangs on shutdown if calling system.exit in serviceInit or serviceStart | Major | . | Yesha Vora | Jian He
YARN-1448 | AM-RM protocol changes to support container resizing | Major | api, resourcemanager | Wangda Tan (No longer used) | Wangda Tan
HDFS-5629 | Support HTTPS in JournalNode and SecondaryNameNode | Major | . | Haohui Mai | Haohui Mai
YARN-1325 | Enabling HA should check Configuration contains multiple RMs | Major | resourcemanager | Tsuyoshi Ozawa | Xuan Gong
YARN-1311 | Fix app specific scheduler-events’ names to be app-attempt based | Trivial | . | Vinod Kumar Vavilapalli | Vinod Kumar Vavilapalli
YARN-1485 | Enabling HA should verify the RM service addresses configurations have been set for every RM Ids defined in RM_HA_IDs | Major | . | Xuan Gong | Xuan Gong
HDFS-5406 | Send incremental block reports for all storages in a single call | Major | datanode | Arpit Agarwal | Arpit Agarwal
HDFS-5454 | DataNode UUID should be assigned prior to FsDataset initialization | Minor | datanode | Eric Sirianni | Arpit Agarwal
YARN-312 | Add updateNodeResource in ResourceManagerAdministrationProtocol | Major | api, graceful | Junping Du | Junping Du
YARN-1446 | Change killing application to wait until state store is done | Major | resourcemanager | Jian He | Jian He
HDFS-5431 | support cachepool-based limit management in path-based caching | Major | datanode, namenode | Colin P. McCabe | Andrew Wang
YARN-1307 | Rethink znode structure for RM HA | Major | resourcemanager | Tsuyoshi Ozawa | Tsuyoshi Ozawa
HDFS-5634 | allow BlockReaderLocal to switch between checksumming and not | Major | hdfs-client | Colin P. McCabe | Colin P. McCabe
HDFS-5636 | Enforce a max TTL per cache pool | Major | caching, namenode | Andrew Wang | Andrew Wang
YARN-1028 | Add FailoverProxyProvider like capability to RMProxy | Major | . | Bikas Saha | Karthik Kambatla
YARN-1172 | Convert *SecretManagers in the RM to services | Major | resourcemanager | Karthik Kambatla | Tsuyoshi Ozawa
YARN-1523 | Use StandbyException instead of RMNotYetReadyException | Major | . | Bikas Saha | Karthik Kambatla
YARN-1481 | Move internal services logic from AdminService to ResourceManager | Major | . | Vinod Kumar Vavilapalli | Vinod Kumar Vavilapalli
YARN-1121 | RMStateStore should flush all pending store events before closing | Major | resourcemanager | Bikas Saha | Jian He
HDFS-5708 | The CacheManager throws a NPE in the DataNode logs when processing cache reports that refer to a block not known to the BlockManager | Major | namenode | Colin P. McCabe | Colin P. McCabe
HDFS-5667 | Include DatanodeStorage in StorageReport | Major | datanode | Eric Sirianni | Arpit Agarwal
YARN-1559 | Race between ServerRMProxy and ClientRMProxy setting RMProxy#INSTANCE | Blocker | resourcemanager | Karthik Kambatla | Karthik Kambatla
YARN-1029 | Allow embedding leader election into the RM | Major | . | Bikas Saha | Karthik Kambatla
YARN-1482 | WebApplicationProxy should be always-on w.r.t HA even if it is embedded in the RM | Major | . | Vinod Kumar Vavilapalli | Xuan Gong
HDFS-5651 | Remove dfs.namenode.caching.enabled and improve CRM locking | Major | namenode | Colin P. McCabe | Colin P. McCabe
YARN-1579 | ActiveRMInfoProto fields should be optional | Trivial | resourcemanager | Karthik Kambatla | Karthik Kambatla
HDFS-5589 | Namenode loops caching and uncaching when data should be uncached | Major | caching, namenode | Andrew Wang | Andrew Wang
YARN-1033 | Expose RM active/standby state to Web UI and REST API | Major | . | Nemon Lou | Karthik Kambatla
YARN-1574 | RMDispatcher should be reset on transition to standby | Blocker | . | Xuan Gong | Xuan Gong
YARN-1598 | HA-related rmadmin commands don’t work on a secure cluster | Critical | client, resourcemanager | Karthik Kambatla | Karthik Kambatla
HDFS-5784 | reserve space in edit log header and fsimage header for feature flag section | Major | namenode | Colin P. McCabe | Colin P. McCabe
YARN-1573 | ZK store should use a private password for root-node-acls | Major | resourcemanager | Karthik Kambatla | Karthik Kambatla
HDFS-5241 | Provide alternate queuing audit logger to reduce logging contention | Major | namenode | Daryn Sharp | Daryn Sharp
YARN-1575 | Public localizer crashes with “Localized unkown resource” | Critical | nodemanager | Jason Lowe | Jason Lowe
YARN-1642 | RMDTRenewer#getRMClient should use ClientRMProxy | Blocker | resourcemanager | Karthik Kambatla | Karthik Kambatla
YARN-1618 | Fix invalid RMApp transition from NEW to FINAL_SAVING | Blocker | resourcemanager | Karthik Kambatla | Karthik Kambatla

### OTHER:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
MAPREDUCE-5463 | Deprecate SLOTS_MILLIS counters | Major | . | Sandy Ryza | Tsuyoshi Ozawa
YARN-1568 | Rename clusterid to clusterId in ActiveRMInfoProto | Trivial | resourcemanager | Karthik Kambatla | Karthik Kambatla
MAPREDUCE-5464 | Add analogs of the SLOTS_MILLIS counters that jive with the YARN resource model | Major | . | Sandy Ryza | Sandy Ryza