##### 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 0.17.2 - 2008-08-11

### BUG FIXES:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
HADOOP-3370 | failed tasks may stay forever in TaskTracker.runningJobs | Critical | . | Zheng Shao | Zheng Shao
HADOOP-3633 | Uncaught exception in DataXceiveServer | Blocker | . | Koji Noguchi | Konstantin Shvachko
HADOOP-3681 | Infinite loop in dfs close | Blocker | . | Koji Noguchi | Lohit Vijayarenu
HADOOP-3002 | HDFS should not remove blocks while in safemode. | Blocker | . | Konstantin Shvachko | Konstantin Shvachko
HADOOP-3685 | Unbalanced replication target | Blocker | . | Koji Noguchi | Hairong Kuang
HADOOP-3758 | Excessive exceptions in HDFS namenode log file | Blocker | . | Jim Huang | Lohit Vijayarenu
HADOOP-3760 | DFS operations fail because of Stream closed error | Blocker | . | Amar Kamat | Lohit Vijayarenu
HADOOP-3707 | Frequent DiskOutOfSpaceException on almost-full datanodes | Blocker | . | Koji Noguchi | Raghu Angadi
HADOOP-3678 | Avoid spurious “DataXceiver: java.io.IOException: Connection reset by peer” errors in DataNode log | Blocker | . | Raghu Angadi | Raghu Angadi
HADOOP-3813 | RPC queue overload of JobTracker | Major | . | Christian Kunz | Amareshwari Sriramadasu
HADOOP-3859 | 1000 concurrent read on a single file failing the task/client | Blocker | . | Koji Noguchi | Johan Oskarsson
HADOOP-3931 | Bug in MapTask.MapOutputBuffer.collect leads to an unnecessary and harmful ‘reset’ | Blocker | . | Arun C Murthy | Chris Douglas
HADOOP-4773 | namenode startup error, hadoop-user-namenode.pid permission denied. | Critical | . | Focus |