##### 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 2.5.0 - 2014-08-11

### INCOMPATIBLE CHANGES:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
HDFS-6164 | Remove lsr in OfflineImageViewer | Major | tools | Haohui Mai | Haohui Mai
HDFS-6168 | Remove deprecated methods in DistributedFileSystem | Major | hdfs-client | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze
HDFS-6153 | Document “fileId” and “childrenNum” fields in the FileStatus Json schema | Minor | documentation, webhdfs | Akira Ajisaka | Akira Ajisaka
YARN-2107 | Refactor timeline classes into server.timeline package | Major | . | Vinod Kumar Vavilapalli | Vinod Kumar Vavilapalli
MAPREDUCE-5777 | Support utf-8 text with BOM (byte order marker) | Major | . | bc Wong | zhihai xu

### NEW FEATURES:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
HADOOP-10498 | Add support for proxy server | Major | util | Daryn Sharp | Daryn Sharp
HDFS-6281 | Provide option to use the NFS Gateway without having to use the Hadoop portmapper | Major | nfs | Aaron T. Myers | Aaron T. Myers
YARN-1864 | Fair Scheduler Dynamic Hierarchical User Queues | Major | scheduler | Ashwin Shankar | Ashwin Shankar
HDFS-6406 | Add capability for NFS gateway to reject connections from unprivileged ports | Major | nfs | Aaron T. Myers | Aaron T. Myers
HDFS-6435 | Add support for specifying a static uid/gid mapping for the NFS gateway | Major | nfs | Aaron T. Myers | Aaron T. Myers
HADOOP-9704 | Write metrics sink plugin for Hadoop/Graphite | Major | . | Chu Tong |
HADOOP-10514 | Common side changes to support HDFS extended attributes (HDFS-2006) | Major | fs | Uma Maheswara Rao G | Yi Liu

### IMPROVEMENTS:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
MAPREDUCE-5014 | Extending DistCp through a custom CopyListing is not possible | Major | distcp | Srikanth Sundarrajan | Srikanth Sundarrajan
YARN-1479 | Invalid NaN values in Hadoop REST API JSON response | Major | . | Kendall Thrapp | Chen He
HADOOP-9968 | ProxyUsers does not work with NetGroups | Major | security | Benoy Antony | Benoy Antony
YARN-1561 | Fix a generic type warning in FairScheduler | Minor | scheduler | Junping Du | Chen He
YARN-1845 | Elapsed time for failed tasks that never started is wrong | Major | . | Rushabh S Shah | Rushabh S Shah
HDFS-6007 | Update documentation about short-circuit local reads | Minor | documentation | Masatake Iwasaki |
HDFS-5196 | Provide more snapshot information in WebUI | Minor | snapshots | Haohui Mai | Shinichi Yamashita
HDFS-6158 | Clean up dead code for OfflineImageViewer | Major | . | Haohui Mai | Haohui Mai
HADOOP-10451 | Remove unused field and imports from SaslRpcServer | Trivial | security | Benoy Antony | Benoy Antony
HADOOP-10345 | Sanitize the the inputs (groups and hosts) for the proxyuser configuration | Minor | security | Benoy Antony | Benoy Antony
YARN-1889 | In Fair Scheduler, avoid creating objects on each call to AppSchedulable comparator | Minor | scheduler | Hong Zhiguo | Hong Zhiguo
HDFS-6167 | Relocate the non-public API classes in the hdfs.client package | Major | hdfs-client | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze
HADOOP-10454 | Provide FileContext version of har file system | Major | . | Kihwal Lee | Kihwal Lee
HDFS-6191 | Disable quota checks when replaying edit log. | Major | namenode | Kihwal Lee | Kihwal Lee
HDFS-6225 | Remove the o.a.h.hdfs.server.common.UpgradeStatusReport | Major | . | Haohui Mai | Haohui Mai
MAPREDUCE-5825 | Provide diagnostics for reducers killed during ramp down | Major | mr-am | Gera Shegalov | Gera Shegalov
YARN-1923 | Make FairScheduler resource ratio calculations terminate faster | Major | fairscheduler | Anubhav Dhoot | Anubhav Dhoot
YARN-1870 | FileInputStream is not closed in ProcfsBasedProcessTree#constructProcessSMAPInfo() | Minor | resourcemanager | Ted Yu | Fengdong Yu
HDFS-6256 | Clean up ImageVisitor and SpotCheckImageVisitor | Major | tools | Akira Ajisaka | Akira Ajisaka
HDFS-6278 | Create HTML5-based UI for SNN | Major | . | Haohui Mai | Haohui Mai
HDFS-6279 | Create new index page for JN / DN | Major | . | Haohui Mai | Haohui Mai
HDFS-5693 | Few NN metrics data points were collected via JMX when NN is under heavy load | Major | namenode | Ming Ma | Ming Ma
HDFS-6273 | Config options to allow wildcard endpoints for namenode HTTP and HTTPS servers | Major | namenode | Arpit Agarwal | Arpit Agarwal
HADOOP-10539 | Provide backward compatibility for ProxyUsers.authorize() call | Minor | security | Benoy Antony | Benoy Antony
HADOOP-10535 | Make the retry numbers in ActiveStandbyElector configurable | Minor | . | Jing Zhao | Jing Zhao
HDFS-6282 | re-add testIncludeByRegistrationName | Minor | test | Colin P. McCabe | Colin P. McCabe
HDFS-6266 | Identify full path for a given INode | Major | snapshots | Jing Zhao | Jing Zhao
YARN-483 | Improve documentation on log aggregation in yarn-default.xml | Major | documentation | Sandy Ryza | Akira Ajisaka
HADOOP-10322 | Add ability to read principal names from a keytab | Major | security | Benoy Antony | Benoy Antony
MAPREDUCE-5812 | Make job context available to OutputCommitter.isRecoverySupported() | Major | mr-am | Mohammad Kamrul Islam | Mohammad Kamrul Islam
HDFS-6269 | NameNode Audit Log should differentiate between webHDFS open and HDFS open. | Major | namenode, webhdfs | Eric Payne | Eric Payne
HDFS-6304 | Consolidate the logic of path resolution in FSDirectory | Major | namenode | Haohui Mai | Haohui Mai
HADOOP-10549 | MAX_SUBST and varPat should be final in Configuration.java | Major | conf | Gera Shegalov | Gera Shegalov
HDFS-5168 | BlockPlacementPolicy does not work for cross node group dependencies | Critical | namenode | Nikola Vujic | Nikola Vujic
HDFS-6295 | Add “decommissioning” state and node state filtering to dfsadmin | Major | . | Andrew Wang | Andrew Wang
MAPREDUCE-5402 | DynamicInputFormat should allow overriding of MAX_CHUNKS_TOLERABLE | Major | distcp, mrv2 | David Rosenstrauch | Tsuyoshi Ozawa
HADOOP-10556 | Add toLowerCase support to auth_to_local rules for service name | Major | security | Alejandro Abdelnur | Alejandro Abdelnur
HDFS-5381 | ExtendedBlock#hashCode should use both blockId and block pool ID | Minor | federation | Colin P. McCabe | Benoy Antony
YARN-1987 | Wrapper for leveldb DBIterator to aid in handling database exceptions | Major | . | Jason Lowe | Jason Lowe
MAPREDUCE-5774 | Job overview in History UI should list reducer phases in chronological order | Trivial | jobhistoryserver | Gera Shegalov | Gera Shegalov
HDFS-6334 | Client failover proxy provider for IP failover based NN HA | Major | . | Kihwal Lee | Kihwal Lee
YARN-1751 | Improve MiniYarnCluster for log aggregation testing | Major | nodemanager | Ming Ma | Ming Ma
HADOOP-10572 | Example NFS mount command must pass noacl as it isn’t supported by the server yet | Trivial | nfs | Harsh J | Harsh J
HDFS-2949 | HA: Add check to active state transition to prevent operator-induced split brain | Major | ha, namenode | Todd Lipcon | Rushabh S Shah
MAPREDUCE-5861 | finishedSubMaps field in LocalContainerLauncher does not need to be volatile | Minor | . | Ted Yu | Tsuyoshi Ozawa
HDFS-5683 | Better audit log messages for caching operations | Major | namenode | Andrew Wang | Abhiraj Butala
MAPREDUCE-5809 | Enhance distcp to support preserving HDFS ACLs. | Major | distcp | Chris Nauroth | Chris Nauroth
HADOOP-10614 | CBZip2InputStream is not threadsafe | Major | . | Xiangrui Meng | Xiangrui Meng
HDFS-6432 | Add snapshot related APIs to webhdfs | Major | namenode, webhdfs | Suresh Srinivas | Jing Zhao
HDFS-6396 | Remove support for ACL feature from INodeSymlink | Minor | . | Andrew Wang | Charles Lamb
HDFS-6433 | Replace BytesMoved class with AtomicLong | Major | balancer & mover | Benoy Antony | Benoy Antony
YARN-2089 | FairScheduler: QueuePlacementPolicy and QueuePlacementRule are missing audience annotations | Major | scheduler | Anubhav Dhoot | zhihai xu
MAPREDUCE-5899 | Support incremental data copy in DistCp | Major | distcp | Jing Zhao | Jing Zhao
HADOOP-10618 | Remove SingleNodeSetup.apt.vm | Minor | documentation | Akira Ajisaka | Akira Ajisaka
YARN-2012 | Fair Scheduler: allow default queue placement rule to take an arbitrary queue | Major | scheduler | Ashwin Shankar | Ashwin Shankar
HDFS-6110 | adding more slow action log in critical write path | Major | datanode | Liang Xie | Liang Xie
HDFS-6416 | Use Time#monotonicNow in OpenFileCtx and OpenFileCtxCatch to avoid system clock bugs | Minor | nfs | Brandon Li | Abhiraj Butala
HDFS-6448 | BlockReaderLocalLegacy should set socket timeout based on conf.socketTimeout | Major | hdfs-client | Liang Xie | Liang Xie
HDFS-6442 | Fix TestEditLogAutoroll and TestStandbyCheckpoints failure caused by port conficts | Minor | test | Zesheng Wu | Zesheng Wu
HDFS-6453 | use Time#monotonicNow to avoid system clock reset | Major | datanode, namenode | Liang Xie | Liang Xie
HDFS-6356 | Fix typo in DatanodeLayoutVersion | Trivial | datanode | Tulasi G | Tulasi G
HDFS-6447 | balancer should timestamp the completion message | Trivial | balancer & mover | Allen Wittenauer | Juan Yu
HDFS-6463 | Clarify behavior of AclStorage#createFsPermissionForExtendedAcl in comments. | Trivial | namenode | Aaron T. Myers | Chris Nauroth
HDFS-6375 | Listing extended attributes with the search permission | Major | namenode | Andrew Wang | Charles Lamb
HDFS-6109 | let sync_file_range() system call run in background | Major | datanode | Liang Xie | Liang Xie
HDFS-6268 | Better sorting in NetworkTopology#pseudoSortByDistance when no local node is found | Minor | . | Andrew Wang | Andrew Wang
YARN-2061 | Revisit logging levels in ZKRMStateStore | Minor | resourcemanager | Karthik Kambatla | Ray Chiang
HDFS-6369 | Document that BlockReader#available() can return more bytes than are remaining in the block | Trivial | . | Ted Yu | Ted Yu
HDFS-6297 | Add CLI testcases to reflect new features of dfs and dfsadmin | Major | test | Dasha Boudnik | Dasha Boudnik
YARN-2030 | Use StateMachine to simplify handleStoreEvent() in RMStateStore | Major | . | Junping Du | Binglin Chang
MAPREDUCE-5886 | Allow wordcount example job to accept multiple input paths. | Minor | examples | Chris Nauroth | Chris Nauroth
YARN-1424 | RMAppAttemptImpl should return the DummyApplicationResourceUsageReport for all invalid accesses | Minor | resourcemanager | Sandy Ryza | Ray Chiang
HDFS-6503 | Fix typo of DFSAdmin restoreFailedStorage | Minor | tools | Zesheng Wu | Zesheng Wu
HDFS-2006 | ability to support storing extended attributes per file | Major | namenode | dhruba borthakur | Yi Liu
HADOOP-10376 | Refactor refresh*Protocols into a single generic refreshConfigProtocol | Minor | . | Chris Li | Chris Li
HADOOP-10561 | Copy command with preserve option should handle Xattrs | Major | fs | Uma Maheswara Rao G | Yi Liu
HDFS-6460 | Ignore stale and decommissioned nodes in NetworkTopology#sortByDistance | Minor | . | Yongjun Zhang | Yongjun Zhang
HADOOP-6350 | Documenting Hadoop metrics | Major | documentation, metrics | Hong Tang | Akira Ajisaka
HADOOP-10691 | Improve the readability of ‘hadoop fs -help’ | Minor | tools | Lei (Eddy) Xu | Lei (Eddy) Xu
HADOOP-10688 | Expose thread-level FileSystem StatisticsData | Major | fs | Sandy Ryza | Sandy Ryza
HDFS-6529 | Trace logging for RemoteBlockReader2 to identify remote datanode and file being read | Minor | hdfs-client | Anubhav Dhoot | Anubhav Dhoot
HDFS-6499 | Use NativeIO#renameTo instead of File#renameTo in FileJournalManager | Major | namenode | Yongjun Zhang | Yongjun Zhang
YARN-2159 | Better logging in SchedulerNode#allocateContainer | Trivial | resourcemanager | Ray Chiang | Ray Chiang
HDFS-6528 | Add XAttrs to TestOfflineImageViewer | Minor | test | Stephen Chu | Stephen Chu
HADOOP-10666 | Remove Copyright /d/d/d/d Apache Software Foundation from the source files license header | Minor | documentation | Henry Saputra | Henry Saputra
HADOOP-10557 | FsShell -cp -pa option for preserving extended ACLs | Major | fs | Akira Ajisaka | Akira Ajisaka
HDFS-6545 | Finalizing rolling upgrade can make NN unavailable for a long duration | Critical | . | Kihwal Lee | Kihwal Lee
MAPREDUCE-5896 | InputSplits should indicate which locations have the block cached in memory | Major | . | Sandy Ryza | Sandy Ryza
HDFS-6492 | Support create-time xattrs and atomically setting multiple xattrs | Major | namenode | Andrew Wang | Andrew Wang
HDFS-6403 | Add metrics for log warnings reported by JVM pauses | Major | datanode, namenode | Yongjun Zhang | Yongjun Zhang
HDFS-6507 | Improve DFSAdmin to support HA cluster better | Major | tools | Zesheng Wu | Zesheng Wu
HDFS-6580 | FSNamesystem.mkdirsInt should call the getAuditFileInfo() wrapper | Major | namenode | Zhilei Xu | Zhilei Xu
HDFS-6578 | add toString method to DatanodeStorage for easier debugging | Major | . | Yongjun Zhang | Yongjun Zhang
HADOOP-10665 | Make Hadoop Authentication Handler loads case in-sensitive | Minor | security | Benoy Antony | Benoy Antony
YARN-2195 | Clean a piece of code in ResourceRequest | Trivial | . | Wei Yan | Wei Yan
YARN-2072 | RM/NM UIs and webservices are missing vcore information | Major | nodemanager, resourcemanager, webapp | Nathan Roberts | Nathan Roberts
HDFS-6593 | Move SnapshotDiffInfo out of INodeDirectorySnapshottable | Minor | namenode, snapshots | Jing Zhao | Jing Zhao
HADOOP-10747 | Support configurable retries on SASL connection failures in RPC client. | Minor | ipc | Chris Nauroth | Chris Nauroth
HADOOP-10674 | Rewrite the PureJavaCrc32 loop for performance improvement | Major | performance, util | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze
HDFS-6595 | Configure the maximum threads allowed for balancing on datanodes | Minor | balancer & mover, datanode | Benoy Antony | Benoy Antony
HADOOP-8943 | Support multiple group mapping providers | Major | security | Kai Zheng | Kai Zheng
YARN-614 | Separate AM failures from hardware failure or YARN error and do not count them to AM retry count | Major | resourcemanager | Bikas Saha | Xuan Gong
HDFS-6558 | Missing ‘\n’ in the description of dfsadmin -rollingUpgrade | Trivial | . | Akira Ajisaka | Chen He
HADOOP-10767 | Clean up unused code in Ls shell command. | Trivial | fs | Chris Nauroth | Chris Nauroth
HDFS-6603 | Add XAttr with ACL test | Minor | test | Stephen Chu | Stephen Chu
HADOOP-9495 | Define behaviour of Seekable.seek(), write tests, fix all hadoop implementations for compliance | Major | fs | Steve Loughran | Steve Loughran
HADOOP-10458 | swifts should throw FileAlreadyExistsException on attempt to overwrite file | Minor | fs | Steve Loughran | Steve Loughran
HADOOP-9361 | Strictly define the expected behavior of filesystem APIs and write tests to verify compliance | Blocker | fs, test | Steve Loughran | Steve Loughran
HDFS-6620 | Snapshot docs should specify about preserve options with cp command | Major | namenode | Uma Maheswara Rao G | Stephen Chu
HADOOP-10782 | Typo in DataChecksum classs | Trivial | . | Jingguo Yao | Jingguo Yao
YARN-2300 | Document better sample requests for RM web services for submitting apps | Major | documentation | Varun Vasudev | Varun Vasudev
YARN-2335 | Annotate all hadoop-sls APIs as @Private | Minor | . | Wei Yan | Wei Yan
HADOOP-10896 | Update compatibility doc to capture visibility of un-annotated classes/ methods | Blocker | documentation | Karthik Kambatla | Karthik Kambatla

### BUG FIXES:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
HADOOP-9099 | NetUtils.normalizeHostName fails on domains where UnknownHost resolves to an IP address | Minor | test | Ivan Mitic | Ivan Mitic
HADOOP-10342 | Extend UserGroupInformation to return a UGI given a preauthenticated kerberos Subject | Major | security | Larry McCay | Larry McCay
YARN-1718 | Fix a couple isTerminals in Fair Scheduler queue placement rules | Major | scheduler | Sandy Ryza | Sandy Ryza
YARN-1736 | FS: AppSchedulable.assignContainer’s priority argument is redundant | Minor | scheduler | Sandy Ryza | Naren Koneru
MAPREDUCE-5671 | NaN can be created by client and assign to Progress | Major | . | Chen He | Chen He
YARN-1678 | Fair scheduler gabs incessantly about reservations | Major | scheduler | Sandy Ryza | Sandy Ryza
YARN-1429 | *nix: Allow a way for users to augment classpath of YARN daemons | Trivial | client | Sandy Ryza | Jarek Jarcec Cecho
MAPREDUCE-5665 | Add audience annotations to MiniMRYarnCluster and MiniMRCluster | Major | test | Sandy Ryza | Anubhav Dhoot
HADOOP-10378 | Typo in help printed by hdfs dfs -help | Major | . | Mit Desai | Mit Desai
YARN-1790 | Fair Scheduler UI not showing apps table | Major | . | bc Wong | bc Wong
MAPREDUCE-5765 | Update hadoop-pipes examples README | Minor | pipes | Jonathan Eagles | Mit Desai
HADOOP-10332 | HttpServer’s jetty audit log always logs 200 OK | Major | . | Daryn Sharp | Jonathan Eagles
MAPREDUCE-5713 | InputFormat and JobConf JavaDoc Fixes | Trivial | documentation | Ben Robie | Chen He
MAPREDUCE-5456 | TestFetcher.testCopyFromHostExtraBytes is missing | Minor | mrv2, test | Jason Lowe | Jason Lowe
YARN-1520 | update capacity scheduler docs to include necessary parameters | Major | . | Chen He | Chen He
YARN-1136 | Replace junit.framework.Assert with org.junit.Assert | Major | . | Karthik Kambatla | Chen He
HDFS-6112 | NFS Gateway docs are incorrect for allowed hosts configuration | Minor | nfs | Aaron T. Myers | Aaron T. Myers
HADOOP-10418 | SaslRpcClient should not assume that remote principals are in the default_realm | Major | security | Aaron T. Myers | Aaron T. Myers
HDFS-3087 | Decomissioning on NN restart can complete without blocks being replicated | Critical | namenode | Kihwal Lee | Rushabh S Shah
HDFS-6156 | Simplify the JMX API that provides snapshot information | Major | . | Haohui Mai | Shinichi Yamashita
MAPREDUCE-5759 | Remove unnecessary conf load in Limits | Major | . | Sandy Ryza | Sandy Ryza
HADOOP-10414 | Incorrect property name for RefreshUserMappingProtocol in hadoop-policy.xml | Major | conf | Joey Echeverria | Joey Echeverria
HDFS-5591 | Checkpointing should use monotonic time when calculating period | Minor | namenode | Andrew Wang | Charles Lamb
HADOOP-10459 | distcp V2 doesn’t preserve root dir’s attributes when -p is specified | Major | tools/distcp | Yongjun Zhang | Yongjun Zhang
HDFS-6190 | minor textual fixes in DFSClient | Trivial | tools | Charles Lamb | Charles Lamb
HADOOP-10462 | DF#getFilesystem is not parsing the command output | Major | . | Akira Ajisaka | Akira Ajisaka
HDFS-6159 | TestBalancerWithNodeGroup.testBalancerWithNodeGroup fails if there is block missing after balancer success | Major | test | Chen He | Chen He
HDFS-6181 | Fix the wrong property names in NFS user guide | Trivial | documentation, nfs | Brandon Li | Brandon Li
HDFS-6180 | dead node count / listing is very broken in JMX and old GUI | Blocker | . | Travis Thompson | Haohui Mai
HDFS-6143 | WebHdfsFileSystem open should throw FileNotFoundException for non-existing paths | Blocker | . | Gera Shegalov | Gera Shegalov
HADOOP-10475 | ConcurrentModificationException in AbstractDelegationTokenSelector.selectToken() | Major | security | Arpit Gupta | Jing Zhao
YARN-1784 | TestContainerAllocation assumes CapacityScheduler | Minor | resourcemanager | Karthik Kambatla | Robert Kanter
HDFS-6160 | TestSafeMode occasionally fails | Major | test | Ted Yu | Arpit Agarwal
HDFS-5669 | Storage#tryLock() should check for null before logging successfull message | Major | datanode | Vinayakumar B | Vinayakumar B
HADOOP-10350 | BUILDING.txt should mention openssl dependency required for hadoop-pipes | Major | . | Vinayakumar B | Vinayakumar B
HADOOP-10495 | TestFileUtil fails on Windows due to bad permission assertions. | Trivial | fs, test | Chris Nauroth | Chris Nauroth
HADOOP-10496 | Metrics system FileSink can leak file descriptor. | Major | metrics | Chris Nauroth | Chris Nauroth
HDFS-6238 | TestDirectoryScanner leaks file descriptors. | Minor | datanode, test | Chris Nauroth | Chris Nauroth
HADOOP-10500 | TestDoAsEffectiveUser fails on JDK7 due to failure to reset proxy user configuration. | Trivial | security, test | Chris Nauroth | Chris Nauroth
HDFS-6243 | HA NameNode transition to active or shutdown may leave lingering image transfer thread. | Major | ha, namenode | Chris Nauroth | Chris Nauroth
HDFS-6194 | Create new tests for ByteRangeInputStream | Major | . | Haohui Mai | Akira Ajisaka
MAPREDUCE-5836 | Fix typo in RandomTextWriter | Trivial | . | Akira Ajisaka | Akira Ajisaka
MAPREDUCE-5775 | Remove unnecessary job.setNumReduceTasks in SleepJob.createJob | Minor | . | Liyin Liang | jhanver chand sharma
HDFS-6214 | Webhdfs has poor throughput for files >2GB | Major | webhdfs | Daryn Sharp | Daryn Sharp
HDFS-4909 | Avoid protocol buffer RPC namespace clashes | Blocker | datanode, journal-node, namenode | Ralph Castain | Colin P. McCabe
YARN-1940 | deleteAsUser() terminates early without deleting more files on error | Major | . | Kihwal Lee | Rushabh S Shah
MAPREDUCE-4937 | MR AM handles an oversized split metainfo file poorly | Major | mr-am | Jason Lowe | Eric Payne
YARN-1865 | ShellScriptBuilder does not check for some error conditions | Minor | nodemanager | Remus Rusanu | Remus Rusanu
HADOOP-9919 | Update hadoop-metrics2.properties examples to Yarn | Major | conf | Akira Ajisaka | Akira Ajisaka
HADOOP-10526 | Chance for Stream leakage in CompressorStream | Minor | . | SreeHari | Rushabh S Shah
HDFS-6178 | Decommission on standby NN couldn’t finish | Major | namenode | Ming Ma | Ming Ma
HDFS-6213 | TestDataNodeConfig failing on Jenkins runs due to DN web port in use | Minor | test | Steve Loughran | Andrew Wang
HADOOP-10251 | Both NameNodes could be in STANDBY State if SNN network is unstable | Critical | ha | Vinayakumar B | Vinayakumar B
HADOOP-10531 | hadoop-config.sh - bug in –hosts argument | Major | . | Sebastien Barrier | Sebastien Barrier
MAPREDUCE-5846 | Rumen doesn’t understand JobQueueChangedEvent | Major | tools/rumen | Nathan Roberts | Nathan Roberts
MAPREDUCE-5837 | MRAppMaster fails when checking on uber mode | Critical | . | Haohui Mai | Haohui Mai
HADOOP-10540 | Datanode upgrade in Windows fails with hardlink error. | Major | tools | Huan Huang | Arpit Agarwal
MAPREDUCE-5749 | TestRMContainerAllocator#testReportedAppProgress Failed | Major | . | Hong Shen | Jason Lowe
HDFS-6270 | Secondary namenode status page shows transaction count in bytes | Minor | . | Benoy Antony | Benoy Antony
HDFS-6288 | DFSInputStream Pread doesn’t update ReadStatistics | Minor | . | Juan Yu | Juan Yu
HADOOP-10508 | RefreshCallQueue fails when authorization is enabled | Major | ipc | Chris Li | Chris Li
HDFS-3828 | Block Scanner rescans blocks too frequently | Major | . | Andy Isaacson | Andy Isaacson
YARN-738 | TestClientRMTokens is failing irregularly while running all yarn tests | Major | . | Omkar Vinit Joshi | Ming Ma
HDFS-6216 | Issues with webhdfs and http proxies | Major | webhdfs | Daryn Sharp | Daryn Sharp
HADOOP-10547 | Give SaslPropertiesResolver.getDefaultProperties() public scope | Major | security | Jason Dere | Benoy Antony
HADOOP-10543 | RemoteException’s unwrapRemoteException method failed for PathIOException | Major | . | Yongjun Zhang | Yongjun Zhang
HDFS-6289 | HA failover can fail if there are pending DN messages for DNs which no longer exist | Critical | ha | Aaron T. Myers | Aaron T. Myers
HADOOP-10568 | Add s3 server-side encryption | Major | fs/s3 | David S. Wang | David S. Wang
HDFS-6337 | Setfacl testcase is failing due to dash character in username in TestAclCLI | Major | test | Uma Maheswara Rao G | Uma Maheswara Rao G
HADOOP-10541 | InputStream in MiniKdc#initKDCServer for minikdc.ldiff is not closed | Minor | test | Ted Yu | Swarnim Kulkarni
HADOOP-10517 | InputStream is not closed in two methods of JarFinder | Minor | test, util | Ted Yu | Ted Yu
HADOOP-10581 | TestUserGroupInformation#testGetServerSideGroups fails because groups stored in Set and ArrayList are compared | Major | . | Mit Desai | Mit Desai
HADOOP-10158 | SPNEGO should work with multiple interfaces/SPNs. | Critical | . | Kihwal Lee | Daryn Sharp
MAPREDUCE-5884 | History server uses short user name when canceling tokens | Major | jobhistoryserver, security | Mohammad Kamrul Islam | Mohammad Kamrul Islam
YARN-2036 | Document yarn.resourcemanager.hostname in ClusterSetup | Minor | documentation | Karthik Kambatla | Ray Chiang
HDFS-6294 | Use INode IDs to avoid conflicts when a file open for write is renamed | Major | namenode | Colin P. McCabe | Colin P. McCabe
HDFS-6230 | Expose upgrade status through NameNode web UI | Major | namenode | Arpit Agarwal | Mit Desai
HDFS-5522 | Datanode disk error check may be incorrectly skipped | Major | . | Kihwal Lee | Rushabh S Shah
HDFS-6367 | EnumSetParam$Domain#parse fails for parameter containing more than one enum. | Major | webhdfs | Yi Liu | Yi Liu
HADOOP-10585 | Retry polices ignore interrupted exceptions | Critical | ipc | Daryn Sharp | Daryn Sharp
HDFS-6305 | WebHdfs response decoding may throw RuntimeExceptions | Critical | webhdfs | Daryn Sharp | Daryn Sharp
MAPREDUCE-5814 | fat jar with *-default.xml may fail when mapreduce.job.classloader=true. | Major | mrv2 | Gera Shegalov | Gera Shegalov
MAPREDUCE-5652 | NM Recovery. ShuffleHandler should handle NM restarts | Major | . | Karthik Kambatla | Jason Lowe
MAPREDUCE-5888 | Failed job leaves hung AM after it unregisters | Major | mr-am | Jason Lowe | Jason Lowe
HDFS-6355 | Fix divide-by-zero, improper use of wall-clock time in BlockPoolSliceScanner | Major | . | Colin P. McCabe | Colin P. McCabe
YARN-1981 | Nodemanager version is not updated when a node reconnects | Major | resourcemanager | Jason Lowe | Jason Lowe
HDFS-6370 | Web UI fails to display in intranet under IE | Major | datanode, journal-node, namenode | Haohui Mai | Haohui Mai
HDFS-6293 | Issues with OIV processing PB-based fsimages | Blocker | . | Kihwal Lee | Kihwal Lee
HDFS-6381 | Fix a typo in INodeReference.java | Trivial | documentation | Binglin Chang | Binglin Chang
HADOOP-10401 | ShellBasedUnixGroupsMapping#getGroups does not always return primary group first | Major | util | Colin P. McCabe | Akira Ajisaka
HDFS-6400 | Cannot execute “hdfs oiv_legacy” | Critical | tools | Akira Ajisaka | Akira Ajisaka
HADOOP-10588 | Workaround for jetty6 acceptor startup issue | Major | . | Kihwal Lee | Kihwal Lee
HDFS-6345 | DFS.listCacheDirectives() should allow filtering based on cache directive ID | Major | caching | Lenni Kuff | Andrew Wang
HDFS-6250 | TestBalancerWithNodeGroup.testBalancerWithRackLocality fails | Major | . | Kihwal Lee | Binglin Chang
MAPREDUCE-5874 | Creating MapReduce REST API section | Major | documentation | Ravi Prakash | Tsuyoshi Ozawa
HDFS-4913 | Deleting file through fuse-dfs when using trash fails requiring root permissions | Major | fuse-dfs | Stephen Chu | Colin P. McCabe
HADOOP-10609 | .gitignore should ignore .orig and .rej files | Major | . | Karthik Kambatla | Karthik Kambatla
HADOOP-10489 | UserGroupInformation#getTokens and UserGroupInformation#addToken can lead to ConcurrentModificationException | Major | . | Jing Zhao | Robert Kanter
MAPREDUCE-5309 | 2.0.4 JobHistoryParser can’t parse certain failed job history files generated by 2.0.3 history server | Major | jobhistoryserver, mrv2 | Vrushali C | Rushabh S Shah
YARN-2050 | Fix LogCLIHelpers to create the correct FileContext | Major | . | Ming Ma | Ming Ma
HDFS-6421 | Fix vecsum.c compile on BSD and some other systems | Major | libhdfs | Jason Lowe | Mit Desai
HDFS-6409 | Fix typo in log message about NameNode layout version upgrade. | Trivial | namenode | Chris Nauroth | Chen He
HDFS-6438 | DeleteSnapshot should be a DELETE request in WebHdfs | Major | webhdfs | Jing Zhao | Jing Zhao
HDFS-6423 | Diskspace quota usage should be updated when appending data to partial block | Major | namenode | Jing Zhao | Jing Zhao
YARN-2073 | Fair Scheduler: Add a utilization threshold to prevent preempting resources when cluster is free | Critical | scheduler | Karthik Kambatla | Karthik Kambatla
YARN-2096 | Race in TestRMRestart#testQueueMetricsOnRMRestart | Major | . | Anubhav Dhoot | Anubhav Dhoot
HDFS-6443 | Fix MiniQJMHACluster related test failures | Minor | test | Zesheng Wu | Zesheng Wu
HDFS-6227 | ShortCircuitCache#unref should purge ShortCircuitReplicas whose streams have been closed by java interrupts | Major | . | Jing Zhao | Colin P. McCabe
HADOOP-10625 | Configuration: names should be trimmed when putting/getting to properties | Major | conf | Wangda Tan | Wangda Tan
MAPREDUCE-5862 | Line records longer than 2x split size aren’t handled correctly | Critical | . | bc Wong | bc Wong
YARN-596 | Use scheduling policies throughout the queue hierarchy to decide which containers to preempt | Major | scheduler | Sandy Ryza | Wei Yan
MAPREDUCE-5895 | FileAlreadyExistsException was thrown : Temporary Index File can not be cleaned up because OutputStream doesn’t close properly | Major | client | Kousuke Saruta | Kousuke Saruta
HADOOP-10602 | Documentation has broken “Go Back” hyperlinks. | Trivial | documentation | Chris Nauroth | Akira Ajisaka
YARN-2112 | Hadoop-client is missing jackson libs due to inappropriate configs in pom.xml | Major | . | Zhijie Shen | Zhijie Shen
HDFS-6461 | Use Time#monotonicNow to compute duration in DataNode#shutDown | Trivial | datanode | James Thomas | James Thomas
HDFS-6462 | NFS: fsstat request fails with the secure hdfs | Major | nfs | Yesha Vora | Brandon Li
HADOOP-10639 | FileBasedKeyStoresFactory initialization is not using default for SSL_REQUIRE_CLIENT_CERT_KEY | Major | security | Alejandro Abdelnur | Alejandro Abdelnur
HADOOP-10638 | Updating hadoop-daemon.sh to work as expected when nfs is started as a privileged user. | Major | nfs | Manikandan Narayanaswamy | Manikandan Narayanaswamy
YARN-2054 | Better defaults for YARN ZK configs for retries and retry-inteval when HA is enabled | Major | resourcemanager | Karthik Kambatla | Karthik Kambatla
HDFS-6404 | HttpFS should use a 000 umask for mkdir and create operations | Major | . | Alejandro Abdelnur | Mike Yoder
YARN-1868 | YARN status web ui does not show correctly in IE 11 | Major | webapp | Chuan Liu | Chuan Liu
HDFS-6472 | fix typo in webapps/hdfs/explorer.js | Trivial | . | Juan Yu | Juan Yu
HDFS-6056 | Clean up NFS config settings | Major | nfs | Aaron T. Myers | Brandon Li
YARN-2103 | Inconsistency between viaProto flag and initial value of SerializedExceptionProto.Builder | Major | . | Binglin Chang | Binglin Chang
YARN-1550 | NPE in FairSchedulerAppsBlock#render | Critical | fairscheduler | caolong | Anubhav Dhoot
HADOOP-10630 | Possible race condition in RetryInvocationHandler | Major | . | Jing Zhao | Jing Zhao
HDFS-6424 | blockReport doesn’t need to invalidate blocks on SBN | Major | . | Ming Ma | Ming Ma
YARN-1913 | With Fair Scheduler, cluster can logjam when all resources are consumed by AMs | Major | scheduler | bc Wong | Wei Yan
YARN-2119 | DEFAULT_PROXY_ADDRESS should use DEFAULT_PROXY_PORT | Major | . | Anubhav Dhoot | Anubhav Dhoot
HDFS-6464 | Support multiple xattr.name parameters for WebHDFS getXAttrs. | Major | webhdfs | Yi Liu | Yi Liu
MAPREDUCE-5898 | distcp to support preserving HDFS extended attributes(XAttrs) | Major | distcp | Uma Maheswara Rao G | Yi Liu
HADOOP-10647 | String Format Exception in SwiftNativeFileSystemStore.java | Minor | fs/swift | Gene Kim | Gene Kim
HDFS-6487 | TestStandbyCheckpoint#testSBNCheckpoints is racy | Major | . | Mit Desai | Mit Desai
HDFS-6497 | Make TestAvailableSpaceVolumeChoosingPolicy deterministic | Minor | test | Colin P. McCabe | Colin P. McCabe
YARN-2122 | In AllocationFileLoaderService, the reloadThread should be created in init() and started in start() | Major | scheduler | Karthik Kambatla | Robert Kanter
YARN-2128 | FairScheduler: Incorrect calculation of amResource usage | Major | . | Wei Yan | Wei Yan
YARN-2132 | ZKRMStateStore.ZKAction#runWithRetries doesn’t log the exception it encounters | Major | resourcemanager | Karthik Kambatla | Vamsee Yarlagadda
HDFS-6500 | Snapshot shouldn’t be removed silently after renaming to an existing snapshot | Blocker | snapshots | Junping Du | Tsz Wo Nicholas Sze
HDFS-6399 | Add note about setfacl in HDFS permissions guide | Minor | documentation, namenode | Charles Lamb | Chris Nauroth
HADOOP-10658 | SSLFactory expects truststores being configured | Major | security | Alejandro Abdelnur | Alejandro Abdelnur
HADOOP-10664 | TestNetUtils.testNormalizeHostName fails | Major | . | Chen He | Aaron T. Myers
HADOOP-9555 | HA functionality that uses ZooKeeper may experience inadvertent TCP RST and miss session expiration event due to bug in client connection management | Major | ha | Chris Nauroth | Chris Nauroth
MAPREDUCE-5834 | TestGridMixClasses tests timesout on branch-2 | Major | . | Mit Desai | Mit Desai
HDFS-6364 | Incorrect check for unknown datanode in Balancer | Major | balancer & mover | Benoy Antony | Benoy Antony
YARN-2124 | ProportionalCapacityPreemptionPolicy cannot work because it’s initialized before scheduler initialized | Critical | resourcemanager, scheduler | Wangda Tan | Wangda Tan
MAPREDUCE-5920 | Add Xattr option in DistCp docs | Minor | distcp, documentation | Uma Maheswara Rao G | Yi Liu
HADOOP-10656 | The password keystore file is not picked by LDAP group mapping | Major | security | Brandon Li | Brandon Li
HADOOP-10622 | Shell.runCommand can deadlock | Critical | . | Jason Lowe | Gera Shegalov
HDFS-6379 | HTTPFS - Implement ACLs support | Major | . | Alejandro Abdelnur | Mike Yoder
YARN-2148 | TestNMClient failed due more exit code values added and passed to AM | Major | client | Wangda Tan | Wangda Tan
HDFS-6471 | Make moveFromLocal CLI testcases to be non-disruptive | Major | test | Dasha Boudnik | Dasha Boudnik
YARN-2075 | TestRMAdminCLI consistently fail on trunk and branch-2 | Major | . | Zhijie Shen | Kenji Kikushima
HDFS-6395 | Skip checking xattr limits for non-user-visible namespaces | Major | namenode | Andrew Wang | Yi Liu
HDFS-3493 | Invalidate excess corrupted blocks as long as minimum replication is satisfied | Major | namenode | J.Andreina | Juan Yu
YARN-2155 | FairScheduler: Incorrect threshold check for preemption | Major | . | Wei Yan | Wei Yan
HADOOP-10678 | SecurityUtil has unnecessary synchronization on collection used for only tests | Minor | security | Benoy Antony | Benoy Antony
HDFS-6470 | TestBPOfferService.testBPInitErrorHandling is flaky | Major | . | Andrew Wang | Ming Ma
HADOOP-10657 | Have RetryInvocationHandler log failover attempt at INFO level | Major | . | Ming Ma | Ming Ma
HADOOP-10683 | Users authenticated with KERBEROS are recorded as being authenticated with SIMPLE | Major | security | Benoy Antony | Benoy Antony
HDFS-6539 | test_native_mini_dfs is skipped in hadoop-hdfs/pom.xml | Major | . | Binglin Chang | Binglin Chang
HDFS-6518 | TestCacheDirectives#testExceedsCapacity should take FSN read lock when accessing pendingCached list | Major | . | Yongjun Zhang | Andrew Wang
HADOOP-10702 | KerberosAuthenticationHandler does not log the principal names correctly | Minor | security | Benoy Antony | Benoy Antony
YARN-1885 | RM may not send the app-finished signal after RM restart to some nodes where the application ran before RM restarts | Major | . | Arpit Gupta | Wangda Tan
YARN-2167 | LeveldbIterator should get closed in NMLeveldbStateStoreService#loadLocalizationState() within finally block | Major | nodemanager | Junping Du | Junping Du
HADOOP-10699 | Fix build native library on mac osx | Major | . | Kirill A. Korinskiy | Binglin Chang
MAPREDUCE-5924 | Windows: Sort Job failed due to ‘Invalid event: TA_COMMIT_PENDING at COMMIT_PENDING’ | Major | . | Yesha Vora | Zhijie Shen
HADOOP-10590 | ServiceAuthorizationManager is not threadsafe | Major | security | Benoy Antony | Benoy Antony
HADOOP-10660 | GraphiteSink should implement Closeable | Major | . | Ted Yu | Chen He
HDFS-6530 | Fix Balancer documentation | Minor | documentation | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze
HDFS-6552 | add DN storage to a BlockInfo will not replace the different storage from same DN | Trivial | namenode | Amir Langer | Amir Langer
HDFS-6551 | Rename with OVERWRITE option may throw NPE when the target file/directory is a reference INode | Major | namenode, snapshots | Jing Zhao | Jing Zhao
HDFS-6439 | NFS should not reject NFS requests to the NULL procedure whether port monitoring is enabled or not | Major | nfs | Brandon Li | Aaron T. Myers
HDFS-6559 | Fix wrong option “dfsadmin -rollingUpgrade start” in the document | Minor | documentation | Akira Ajisaka | Akira Ajisaka
HADOOP-10711 | Cleanup some extra dependencies from hadoop-auth | Major | security | Robert Kanter | Robert Kanter
HADOOP-10716 | Cannot use more than 1 har filesystem | Critical | conf, fs | Daryn Sharp | Rushabh S Shah
HDFS-6553 | Add missing DeprecationDeltas for NFS Kerberos configurations | Major | nfs | Stephen Chu | Stephen Chu
HDFS-6563 | NameNode cannot save fsimage in certain circumstances when snapshots are in use | Critical | namenode, snapshots | Aaron T. Myers | Aaron T. Myers
HDFS-3848 | A Bug in recoverLeaseInternal method of FSNameSystem class | Major | namenode | Hooman Peiro Sajjad | Chen He
HDFS-6549 | Add support for accessing the NFS gateway from the AIX NFS client | Major | nfs | Aaron T. Myers | Aaron T. Myers
MAPREDUCE-5844 | Add a configurable delay to reducer-preemption | Major | . | Maysam Yabandeh | Maysam Yabandeh
HDFS-6312 | WebHdfs HA failover is broken on secure clusters | Blocker | webhdfs | Daryn Sharp | Daryn Sharp
HDFS-6535 | HDFS quota update is wrong when file is appended | Major | namenode | George Wong | George Wong
HADOOP-9559 | When metrics system is restarted MBean names get incorrectly flagged as dupes | Major | metrics | Mostafa Elhemali | Mike Liddell
HDFS-6222 | Remove background token renewer from webhdfs | Major | webhdfs | Daryn Sharp | Daryn Sharp
YARN-2187 | FairScheduler: Disable max-AM-share check by default | Major | fairscheduler | Robert Kanter | Robert Kanter
HDFS-6583 | Remove clientNode in FileUnderConstructionFeature | Minor | namenode | Haohui Mai | Haohui Mai
HDFS-6587 | Bug in TestBPOfferService can cause test failure | Major | test | Zhilei Xu | Zhilei Xu
YARN-2191 | Add a test to make sure NM will do application cleanup even if RM restarting happens before application completed | Major | resourcemanager | Wangda Tan | Wangda Tan
YARN-2111 | In FairScheduler.attemptScheduling, we don’t count containers as assigned if they have 0 memory but non-zero cores | Major | scheduler | Sandy Ryza | Sandy Ryza
YARN-2192 | TestRMHA fails when run with a mix of Schedulers | Major | . | Anubhav Dhoot | Anubhav Dhoot
HADOOP-10746 | TestSocketIOWithTimeout#testSocketIOWithTimeout fails on Power PC | Major | test | Jinghui Wang | Jinghui Wang
YARN-2109 | Fix TestRM to work with both schedulers | Major | scheduler | Anubhav Dhoot | Karthik Kambatla
HDFS-6598 | Fix a typo in message issued from explorer.js | Trivial | webhdfs | Yongjun Zhang | Yongjun Zhang
HDFS-6475 | WebHdfs clients fail without retry because incorrect handling of StandbyException | Major | ha, webhdfs | Yongjun Zhang | Yongjun Zhang
HDFS-6527 | Edit log corruption due to defered INode removal | Blocker | . | Kihwal Lee | Kihwal Lee
YARN-2171 | AMs block on the CapacityScheduler lock during allocate() | Critical | capacityscheduler | Jason Lowe | Jason Lowe
HADOOP-9705 | FsShell cp -p does not preserve directory attibutes | Major | fs | Stephen Chu | Akira Ajisaka
MAPREDUCE-5939 | StartTime showing up as the epoch time in JHS UI after upgrade | Major | . | Kihwal Lee | Chen He
HDFS-6572 | Add an option to the NameNode that prints the software and on-disk image versions | Minor | namenode | Charles Lamb | Charles Lamb
YARN-2163 | WebUI: Order of AppId in apps table should be consistent with ApplicationId.compareTo(). | Minor | resourcemanager, webapp | Wangda Tan | Wangda Tan
HADOOP-10701 | NFS should not validate the access premission only based on the user’s primary group | Major | nfs | Premchandra Preetham Kukillaya | Harsh J
YARN-2204 | TestAMRestart#testAMRestartWithExistingContainers assumes CapacityScheduler | Trivial | resourcemanager | Robert Kanter | Robert Kanter
YARN-2104 | Scheduler queue filter failed to work because index of queue column changed | Major | resourcemanager, webapp | Wangda Tan | Wangda Tan
HADOOP-10739 | Renaming a file into a directory containing the same filename results in a confusing I/O error | Major | fs | Jason Lowe | Chang Li
YARN-2201 | TestRMWebServicesAppsModification dependent on yarn-default.xml | Major | . | Ray Chiang | Varun Vasudev
HDFS-6556 | Refine XAttr permissions | Major | namenode | Yi Liu | Uma Maheswara Rao G
HDFS-6601 | Issues in finalizing rolling upgrade when there is a layout version change | Blocker | . | Kihwal Lee | Kihwal Lee
HDFS-6418 | Regression: DFS_NAMENODE_USER_NAME_KEY missing in trunk | Blocker | hdfs-client | Steve Loughran | Tsz Wo Nicholas Sze
HADOOP-10710 | hadoop.auth cookie is not properly constructed according to RFC2109 | Major | security | Alejandro Abdelnur | Juan Yu
HDFS-6591 | while loop is executed tens of thousands of times in Hedged Read | Major | hdfs-client | LiuLei | Liang Xie
YARN-2065 | AM cannot create new containers after restart-NM token from previous attempt used | Major | . | Steve Loughran | Jian He
HDFS-6612 | MiniDFSNNTopology#simpleFederatedTopology(int) always hardcode nameservice ID | Minor | . | Juan Yu | Juan Yu
HDFS-6604 | The short-circuit cache doesn’t correctly time out replicas that haven’t been used in a while | Critical | hdfs-client | Giuseppe Reina | Colin P. McCabe
YARN-2241 | ZKRMStateStore: On startup, show nicer messages if znodes already exist | Minor | resourcemanager | Robert Kanter | Robert Kanter
YARN-2232 | ClientRMService doesn’t allow delegation token owner to cancel their own token in secure mode | Major | . | Varun Vasudev | Varun Vasudev
HDFS-6610 | TestShortCircuitLocalRead tests sometimes timeout on slow machines | Minor | test | Charles Lamb | Charles Lamb
HADOOP-10312 | Shell.ExitCodeException to have more useful toString | Minor | util | Steve Loughran | Steve Loughran
HADOOP-10533 | S3 input stream NPEs in MapReduce job | Minor | fs/s3 | Benjamin Kim | Steve Loughran
HADOOP-10419 | BufferedFSInputStream NPEs on getPos() on a closed stream | Minor | fs | Steve Loughran | Steve Loughran
HDFS-6493 | Change dfs.namenode.startup.delay.block.deletion to second instead of millisecond | Trivial | . | Juan Yu | Juan Yu
YARN-2250 | FairScheduler.findLowestCommonAncestorQueue returns null when queues not identical | Major | scheduler | Krisztian Horvath | Krisztian Horvath
MAPREDUCE-5868 | TestPipeApplication causing nightly build to fail | Major | test | Jason Lowe | Akira Ajisaka
MAPREDUCE-5517 | enabling uber mode with 0 reducer still requires mapreduce.reduce.memory.mb to be less than yarn.app.mapreduce.am.resource.mb | Minor | . | Siqi Li | Siqi Li
HADOOP-10801 | Fix dead link in site.xml | Major | documentation | Akira Ajisaka | Akira Ajisaka
HDFS-6618 | FSNamesystem#delete drops the FSN lock between removing INodes from the tree and deleting them from the inode map | Blocker | . | Kihwal Lee | Kihwal Lee
HDFS-6622 | Rename and AddBlock may race and produce invalid edits | Blocker | . | Kihwal Lee | Kihwal Lee
HDFS-6631 | TestPread#testHedgedReadLoopTooManyTimes fails intermittently. | Major | hdfs-client, test | Chris Nauroth | Liang Xie
HDFS-6647 | Edit log corruption when pipeline recovery occurs for deleted file present in snapshot | Blocker | namenode, snapshots | Aaron T. Myers | Kihwal Lee
HDFS-6378 | NFS registration should timeout instead of hanging when portmap/rpcbind is not available | Major | nfs | Brandon Li | Abhiraj Butala
MAPREDUCE-5790 | Default map hprof profile options do not work | Blocker | . | Andrew Wang | Gera Shegalov
HADOOP-10468 | TestMetricsSystemImpl.testMultiThreadedPublish fails intermediately | Blocker | . | Haohui Mai | Akira Ajisaka
MAPREDUCE-5952 | LocalContainerLauncher#renameMapOutputForReduce incorrectly assumes a single dir for mapOutIndex | Blocker | mr-am, mrv2 | Gera Shegalov | Gera Shegalov
HDFS-6599 | 2.4 addBlock is 10 to 20 times slower compared to 0.23 | Blocker | . | Kihwal Lee | Daryn Sharp
HDFS-6632 | Reintroduce dfs.http.port / dfs.https.port in branch-2 | Major | . | Yongjun Zhang | Yongjun Zhang
HDFS-6680 | BlockPlacementPolicyDefault does not choose favored nodes correctly | Major | namenode | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze
HDFS-6712 | Document HDFS Multihoming Settings | Major | documentation | Arpit Agarwal | Arpit Agarwal
HDFS-6703 | NFS: Files can be deleted from a read-only mount | Major | nfs | Abhiraj Butala | Srikanth Upputuri
HADOOP-10872 | TestPathData fails intermittently with “Mkdirs failed to create d1” | Major | fs | Yongjun Zhang | Yongjun Zhang
HADOOP-10890 | TestDFVariations.testMount fails intermittently | Major | . | Yongjun Zhang | Yongjun Zhang
HDFS-6422 | getfattr in CLI doesn’t throw exception or return non-0 return code when xattr doesn’t exist | Blocker | . | Charles Lamb | Charles Lamb
HDFS-6723 | New NN webUI no longer displays decommissioned state for dead node | Major | . | Ming Ma | Ming Ma
HDFS-6696 | Name node cannot start if the path of a file under construction contains “.snapshot” | Blocker | . | Kihwal Lee | Andrew Wang
HDFS-6752 | Avoid Address bind errors in TestDatanodeConfig#testMemlockLimit | Major | test | Vinayakumar B | Vinayakumar B
YARN-1726 | ResourceSchedulerWrapper broken due to AbstractYarnScheduler | Blocker | . | Wei Yan | Wei Yan
MAPREDUCE-6002 | MR task should prevent report error to AM when process is shutting down | Major | task | Wangda Tan | Wangda Tan
HADOOP-10686 | Writables are not always configured | Major | . | Abraham Elmahrek | Abraham Elmahrek
HADOOP-10910 | Increase findbugs maxHeap size | Blocker | . | Andrew Wang | Andrew Wang
HDFS-6793 | Missing changes in HftpFileSystem when Reintroduce dfs.http.port / dfs.https.port in branch-2 | Blocker | . | Juan Yu | Juan Yu
HADOOP-10589 | NativeS3FileSystem throw NullPointerException when the file is empty | Major | fs/s3 | shuisheng wei | Steve Loughran
HADOOP-10737 | S3n silent failure on copy, data loss on rename | Major | fs/s3 | Gian Merlino | Steve Loughran

### TESTS:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
HDFS-5892 | TestDeleteBlockPool fails in branch-2 | Minor | . | Ted Yu | Ted Yu
HADOOP-3679 | calls to junit Assert::assertEquals invert arguments, causing misleading error messages, other minor improvements. | Minor | test | Chris Douglas | jay vyas
MAPREDUCE-5804 | TestMRJobsWithProfiler#testProfiler timesout | Major | . | Mit Desai | Mit Desai
HDFS-6224 | Add a unit test to TestAuditLogger for file permissions passed to logAuditEvent | Minor | test | Charles Lamb | Charles Lamb
HDFS-5409 | TestOfflineEditsViewer#testStored fails on Windows due to CRLF line endings in editsStored.xml from git checkout | Minor | test | Chris Nauroth | Chris Nauroth
MAPREDUCE-5642 | TestMiniMRChildTask fails on Windows | Minor | test | Chuan Liu | Chuan Liu
HDFS-6265 | Prepare HDFS codebase for JUnit 4.11. | Minor | test | Chris Nauroth | Chris Nauroth
YARN-1970 | Prepare YARN codebase for JUnit 4.11. | Minor | . | Chris Nauroth | Chris Nauroth
MAPREDUCE-5852 | Prepare MapReduce codebase for JUnit 4.11. | Minor | test | Chris Nauroth | Chris Nauroth
YARN-2011 | Fix typo and warning in TestLeafQueue | Trivial | . | Chen He | Chen He
HDFS-6287 | Add vecsum test of libhdfs read access times | Minor | libhdfs, test | Colin P. McCabe | Colin P. McCabe
HDFS-6419 | TestBookKeeperHACheckpoints#TestSBNCheckpoints fails on trunk | Major | . | Akira Ajisaka | Akira Ajisaka
YARN-2105 | Fix TestFairScheduler after YARN-2012 | Major | . | Ted Yu | Ashwin Shankar
YARN-1977 | Add tests on getApplicationRequest with filtering start time range | Minor | . | Junping Du | Junping Du
HDFS-6257 | TestCacheDirectives#testExceedsCapacity fails occasionally | Minor | caching | Ted Yu | Colin P. McCabe
HADOOP-10754 | Reenable several HA ZooKeeper-related tests on Windows. | Trivial | ha, test | Chris Nauroth | Chris Nauroth
YARN-2216 | TestRMApplicationHistoryWriter sometimes fails in trunk | Minor | . | Ted Yu | Zhijie Shen
YARN-2224 | Explicitly enable vmem check in TestContainersMonitor#testContainerKillOnMemoryOverflow | Trivial | nodemanager | Anubhav Dhoot | Anubhav Dhoot
HDFS-6614 | shorten TestPread run time with a smaller retry timeout setting | Minor | test | Liang Xie | Liang Xie
YARN-2270 | TestFSDownload#testDownloadPublicWithStatCache fails in trunk | Minor | . | Ted Yu | Akira Ajisaka
YARN-2319 | Fix MiniKdc not close in TestRMWebServicesDelegationTokens.java | Major | resourcemanager | Wenwu Peng | Wenwu Peng

### SUB-TASKS:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
HDFS-6125 | Cleanup unnecessary cast in HDFS code base | Major | test | Suresh Srinivas | Suresh Srinivas
HADOOP-10426 | CreateOpts.getOpt(..) should declare with generic type argument | Minor | fs | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze
HADOOP-10439 | Fix compilation error in branch-2 after HADOOP-10426 | Major | build | Haohui Mai | Haohui Mai
HDFS-6155 | Fix Boxing/unboxing to parse a primitive findbugs warnings | Major | . | Suresh Srinivas | Suresh Srinivas
HDFS-6119 | FSNamesystem code cleanup | Minor | namenode | Suresh Srinivas | Suresh Srinivas
HDFS-6162 | Format strings should use platform independent line separator | Minor | . | Suresh Srinivas | Suresh Srinivas
HDFS-5978 | Create a tool to take fsimage and expose read-only WebHDFS API | Major | tools | Akira Ajisaka | Akira Ajisaka
HDFS-6173 | Move the default processor from Ls to Web in OfflineImageViewer | Major | tools | Akira Ajisaka | Akira Ajisaka
YARN-1757 | NM Recovery. Auxiliary service support. | Major | nodemanager | Jason Lowe | Jason Lowe
HDFS-6169 | Move the address in WebImageViewer | Major | tools | Akira Ajisaka | Akira Ajisaka
HADOOP-10104 | Update jackson to 1.9.13 | Minor | build | Steve Loughran | Akira Ajisaka
HDFS-6170 | Support GETFILESTATUS operation in WebImageViewer | Major | tools | Akira Ajisaka | Akira Ajisaka
HDFS-6219 | Proxy superuser configuration should use true client IP for address checks | Major | namenode, webhdfs | Daryn Sharp | Daryn Sharp
HADOOP-10499 | Remove unused parameter from ProxyUsers.authorize() | Minor | security | Benoy Antony | Benoy Antony
HADOOP-10503 | Move junit up to v 4.11 | Minor | build | Steve Loughran | Chris Nauroth
HDFS-6274 | Cleanup javadoc warnings in HDFS code | Major | . | Suresh Srinivas | Suresh Srinivas
HDFS-6275 | Fix warnings - type arguments can be inferred and redudant local variable | Major | . | Suresh Srinivas | Suresh Srinivas
HDFS-6217 | Webhdfs PUT operations may not work via a http proxy | Major | webhdfs | Daryn Sharp | Daryn Sharp
HDFS-6276 | Remove unnecessary conditions and null check | Major | . | Suresh Srinivas | Suresh Srinivas
HDFS-6210 | Support GETACLSTATUS operation in WebImageViewer | Major | tools | Akira Ajisaka | Akira Ajisaka
HDFS-5865 | Update OfflineImageViewer document | Minor | documentation | Akira Ajisaka | Akira Ajisaka
MAPREDUCE-5639 | Port DistCp2 document to trunk | Major | documentation | Akira Ajisaka | Akira Ajisaka
HDFS-6218 | Audit log should use true client IP for proxied webhdfs operations | Major | namenode, webhdfs | Daryn Sharp | Daryn Sharp
MAPREDUCE-5638 | Port Hadoop Archives document to trunk | Major | documentation | Akira Ajisaka | Akira Ajisaka
MAPREDUCE-5637 | Convert Hadoop Streaming document to APT | Major | documentation | Akira Ajisaka | Akira Ajisaka
MAPREDUCE-5636 | Convert MapReduce Tutorial document to APT | Major | documentation | Akira Ajisaka | Akira Ajisaka
HADOOP-10471 | Reduce the visibility of constants in ProxyUsers | Major | security | Benoy Antony | Benoy Antony
HADOOP-10467 | Enable proxyuser specification to support list of users in addition to list of groups. | Major | security | Benoy Antony | Benoy Antony
HDFS-6240 | WebImageViewer returns 404 if LISTSTATUS to an empty directory | Major | tools | Akira Ajisaka | Akira Ajisaka
YARN-1982 | Rename the daemon name to timelineserver | Major | . | Zhijie Shen | Zhijie Shen
HDFS-6351 | Command “hdfs dfs -rm -r” can’t remove empty directory | Major | hdfs-client | Yongjun Zhang | Yongjun Zhang
HDFS-6186 | Pause deletion of blocks when the namenode starts up | Major | namenode | Suresh Srinivas | Jing Zhao
YARN-1362 | Distinguish between nodemanager shutdown for decommission vs shutdown for restart | Major | nodemanager | Jason Lowe | Jason Lowe
YARN-1938 | Kerberos authentication for the timeline server | Major | . | Zhijie Shen | Zhijie Shen
YARN-2017 | Merge some of the common lib code in schedulers | Major | resourcemanager | Jian He | Jian He
YARN-2049 | Delegation token stuff for the timeline sever | Major | . | Zhijie Shen | Zhijie Shen
YARN-1936 | Secured timeline client | Major | . | Zhijie Shen | Zhijie Shen
YARN-1937 | Add entity-level access control of the timeline data for owners only | Major | . | Zhijie Shen | Zhijie Shen
YARN-2059 | Extend access control for admin acls | Major | . | Zhijie Shen | Zhijie Shen
YARN-2071 | Enforce more restricted permissions for the directory of Leveldb store | Major | . | Zhijie Shen | Zhijie Shen
HADOOP-10566 | Refactor proxyservers out of ProxyUsers | Major | security | Benoy Antony | Benoy Antony
HADOOP-10448 | Support pluggable mechanism to specify proxy user settings | Major | security | Benoy Antony | Benoy Antony
YARN-1877 | Document yarn.resourcemanager.zk-auth and its scope | Critical | resourcemanager | Karthik Kambatla | Robert Kanter
YARN-1338 | Recover localized resource cache state upon nodemanager restart | Major | nodemanager | Jason Lowe | Jason Lowe
YARN-2115 | Replace RegisterNodeManagerRequest#ContainerStatus with a new NMContainerStatus | Major | . | Jian He | Jian He
YARN-1474 | Make schedulers services | Major | scheduler | Sandy Ryza | Tsuyoshi Ozawa
HDFS-6328 | Clean up dead code in FSDirectory | Major | namenode | Haohui Mai | Haohui Mai
YARN-2118 | Type mismatch in contains() check of TimelineWebServices#injectOwnerInfo() | Major | . | Ted Yu | Ted Yu
YARN-2117 | Close of Reader in TimelineAuthenticationFilterInitializer#initFilter() should be enclosed in finally block | Minor | . | Ted Yu | Chen He
YARN-2121 | TimelineAuthenticator#hasDelegationToken may throw NPE | Major | . | Zhijie Shen | Zhijie Shen
YARN-1368 | Common work to re-populate containers’ state into scheduler | Major | . | Bikas Saha | Jian He
HDFS-6315 | Decouple recording edit logs from FSDirectory | Major | . | Haohui Mai | Haohui Mai
YARN-1702 | Expose kill app functionality as part of RM web services | Major | . | Varun Vasudev | Varun Vasudev
HDFS-6330 | Move mkdirs() to FSNamesystem | Major | namenode | Haohui Mai | Haohui Mai
YARN-1339 | Recover DeletionService state upon nodemanager restart | Major | nodemanager | Jason Lowe | Jason Lowe
HDFS-6480 | Move waitForReady() from FSDirectory to FSNamesystem | Major | namenode | Haohui Mai | Haohui Mai
HADOOP-10279 | Create multiplexer, a requirement for the fair queue | Major | . | Chris Li | Chris Li
HDFS-6557 | Move the reference of fsimage to FSNamesystem | Major | namenode | Haohui Mai | Haohui Mai
HADOOP-10479 | Fix new findbugs warnings in hadoop-minikdc | Major | . | Haohui Mai | Swarnim Kulkarni
HDFS-4667 | Capture renamed files/directories in snapshot diff report | Major | namenode | Jing Zhao | Jing Zhao
HADOOP-10659 | Refactor AccessControlList to reuse utility functions and to improve performance | Minor | security | Benoy Antony | Benoy Antony
HDFS-6562 | Refactor rename() in FSDirectory | Minor | namenode | Haohui Mai | Haohui Mai
YARN-2074 | Preemption of AM containers shouldn’t count towards AM failures | Major | resourcemanager | Vinod Kumar Vavilapalli | Jian He
HADOOP-10652 | Refactor Proxyusers to use AccessControlList | Major | security | Benoy Antony | Benoy Antony
YARN-2152 | Recover missing container information | Major | resourcemanager | Jian He | Jian He
YARN-1365 | ApplicationMasterService to allow Register of an app that was running before restart | Major | resourcemanager | Bikas Saha | Anubhav Dhoot
HADOOP-10565 | Support IP ranges (CIDR) in proxyuser.hosts | Major | security | Benoy Antony | Benoy Antony
HADOOP-10649 | Allow overriding the default ACL for service authorization | Major | security | Benoy Antony | Benoy Antony
YARN-2052 | ContainerId creation after work preserving restart is broken | Major | resourcemanager | Tsuyoshi Ozawa | Tsuyoshi Ozawa
YARN-1713 | Implement getnewapplication and submitapp as part of RM web service | Blocker | . | Varun Vasudev | Varun Vasudev
YARN-2022 | Preempting an Application Master container can be kept as least priority when multiple applications are marked for preemption by ProportionalCapacityPreemptionPolicy | Major | resourcemanager | Sunil Govindan | Sunil Govindan
MAPREDUCE-5900 | Container preemption interpreted as task failures and eventually job failures | Major | applicationmaster, mr-am, mrv2 | Mayank Bansal | Mayank Bansal
HADOOP-9711 | Write contract tests for S3Native; fix places where it breaks | Minor | fs/s3 | Steve Loughran | Steve Loughran
HADOOP-9371 | Define Semantics of FileSystem more rigorously | Major | fs | Steve Loughran | Steve Loughran
HADOOP-9712 | Write contract tests for FTP filesystem, fix places where it breaks | Minor | fs/s3 | Steve Loughran | Steve Loughran
HDFS-4286 | Changes from BOOKKEEPER-203 broken capability of including bookkeeper-server jar in hidden package of BKJM | Major | . | Vinayakumar B | Rakesh R
HDFS-4221 | Remove the format limitation point from BKJM documentation as HDFS-3810 closed | Major | ha | Uma Maheswara Rao G | Rakesh R
HDFS-5411 | Update Bookkeeper dependency to 4.2.3 | Minor | . | Robert Rati | Rakesh R
YARN-1366 | AM should implement Resync with the ApplicationMasterService instead of shutting down | Major | resourcemanager | Bikas Saha | Rohith Sharma K S
YARN-2233 | Implement web services to create, renew and cancel delegation tokens | Blocker | resourcemanager | Varun Vasudev | Varun Vasudev
YARN-1408 | Preemption caused Invalid State Event: ACQUIRED at KILLED and caused a task timeout for 30mins | Major | resourcemanager | Sunil Govindan | Sunil Govindan
HADOOP-10864 | Tool documentenation is broken | Minor | documentation | Allen Wittenauer | Akira Ajisaka
HADOOP-10894 | Fix dead link in ToolRunner documentation | Minor | documentation | Akira Ajisaka | Akira Ajisaka
YARN-2247 | Allow RM web services users to authenticate using delegation tokens | Blocker | . | Varun Vasudev | Varun Vasudev

### OTHER:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
MAPREDUCE-4282 | Convert Forrest docs to APT | Major | documentation | Eli Collins | Akira Ajisaka
YARN-2091 | Add more values to ContainerExitStatus and pass it from NM to RM and then to app masters | Major | . | Bikas Saha | Tsuyoshi Ozawa
YARN-2125 | ProportionalCapacityPreemptionPolicy should only log CSV when debug enabled | Minor | resourcemanager, scheduler | Wangda Tan | Wangda Tan
HDFS-6486 | Add user doc for XAttrs via WebHDFS. | Minor | webhdfs | Yi Liu | Yi Liu
HDFS-6430 | HTTPFS - Implement XAttr support | Major | . | Yi Liu | Yi Liu
HADOOP-10715 | Remove public GraphiteSink#setWriter() | Minor | . | Ted Yu |
HADOOP-10821 | Prepare the release notes for Hadoop 2.5.0 | Blocker | . | Akira Ajisaka | Andrew Wang