Apache Hadoop 3.5.0 – Apache Hadoop Changelog

##### 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
- Fair Call Queue
- Native Libraries
- Proxy User
- Rack Awareness
- Secure Mode
- Service Level Authorization
- HTTP Authentication
- Credential Provider API
- Hadoop KMS
- Tracing
- Unix Shell Guide
- Registry
- Async Profiler

##### 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
- 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
- Running Applications in runC Containers
- Using CGroups
- Secure Containers
- 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

##### Hadoop Compatible File Systems

- Aliyun OSS
- Amazon S3
- Azure Blob Storage
- Azure Data Lake Storage
- Tencent COS
- Huaweicloud OBS
- VolcanoEngine TOS

##### Auth

- Overview
- Examples
- Configuration
- Building

##### Tools

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

##### 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 0.16.0 - 2008-02-07

### NEW FEATURES:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
HADOOP-2045 | credits page should have more information | Major | documentation | Doug Cutting | Doug Cutting
HADOOP-1604 | admins should be able to finalize namenode upgrades without running the cluster | Critical | . | Owen O’Malley | Konstantin Shvachko
HADOOP-1912 | Datanode should support block replacement | Major | . | Hairong Kuang | Hairong Kuang
HADOOP-2288 | Change FileSystem API to support access control. | Major | fs | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze
HADOOP-2229 | Provide a simple login implementation | Major | fs | Tsz Wo Nicholas Sze | Hairong Kuang
HADOOP-2184 | RPC Support for user permissions and authentication. | Major | ipc | Tsz Wo Nicholas Sze | Raghu Angadi
HADOOP-1652 | Rebalance data blocks when new data nodes added or data nodes become full | Major | . | Hairong Kuang | Hairong Kuang
HADOOP-2145 | need ‘doc’ target that runs forrest | Major | build | Doug Cutting | Doug Cutting
HADOOP-2085 | Map-side joins on sorted, equally-partitioned datasets | Major | . | Chris Douglas | Chris Douglas
HADOOP-2381 | Support permission information in FileStatus | Major | fs | Tsz Wo Nicholas Sze | Raghu Angadi
HADOOP-2336 | Shell commands to access and modify file permissions | Major | fs | Raghu Angadi | Raghu Angadi
HADOOP-1301 | resource management proviosioning for Hadoop | Major | . | Pete Wyckoff | Hemanth Yamijala
HADOOP-1298 | adding user info to file | Major | fs | Kurtis Heimerl | Tsz Wo Nicholas Sze
HADOOP-2447 | HDFS should be capable of limiting the total number of inodes in the system | Major | . | Sameer Paranjpye | dhruba borthakur
HADOOP-2487 | Provide an option to get job status for all jobs run by or submitted to a job tracker | Major | . | Hemanth Yamijala | Amareshwari Sriramadasu
HADOOP-2398 | Additional Instrumentation for NameNode, RPC Layer and JMX support | Major | . | Sanjay Radia | Sanjay Radia
HADOOP-2514 | Trash and permissions don’t mix | Major | . | Robert Chansler | Doug Cutting
HADOOP-2012 | Periodic verification at the Datanode | Major | . | Raghu Angadi | Raghu Angadi
HADOOP-2543 | No-permission-checking mode for smooth transition to 0.16’s permissions features. | Major | . | Sanjay Radia | Hairong Kuang
HADOOP-2603 | SequenceFileAsBinaryInputFormat | Major | . | Chris Douglas | Chris Douglas
HADOOP-2367 | Get representative hprof information from tasks | Major | . | Owen O’Malley | Owen O’Malley
HADOOP-2567 | add FileSystem#getHomeDirectory() method | Major | fs | Doug Cutting | Doug Cutting
HADOOP-2529 | DFS User Guide | Major | documentation | Raghu Angadi | Raghu Angadi

### IMPROVEMENTS:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
HADOOP-2058 | Allow adding additional datanodes to MiniDFSCluster | Major | test | Hairong Kuang | Hairong Kuang
HADOOP-1855 | fsck should verify block placement | Major | . | dhruba borthakur | Konstantin Shvachko
HADOOP-1839 | Link-ify the Pending/Running/Complete/Killed tasks/task-attempts on jobdetails.jsp | Major | . | Arun C Murthy | Amar Kamat
HADOOP-1848 | Redesign of Eclipse plug-in interface with Hadoop | Major | . | Christophe Taton | Christophe Taton
HADOOP-1857 | Ability to run a script when a task fails to capture stack traces | Major | . | Amareshwari Sriramadasu | Amareshwari Sriramadasu
HADOOP-1210 | Log counters in job history | Minor | . | Albert Chern | Owen O’Malley
HADOOP-2105 | Clarify requirements for Hadoop in overview.html | Minor | . | Jim Kellerman | Jim Kellerman
HADOOP-2086 | ability to add dependencies to a job after construction | Major | . | Adrian Woodhead | Adrian Woodhead
HADOOP-1185 | dynamically change log levels | Major | util | dhruba borthakur | Tsz Wo Nicholas Sze
HADOOP-2134 | Remove developer-centric requirements from overview.html | Major | documentation | Arun C Murthy | Jim Kellerman
HADOOP-1274 | Configuring different number of mappers and reducers per TaskTracker | Major | . | Koji Noguchi | Amareshwari Sriramadasu
HADOOP-2127 | Add pipes sort example | Major | . | Owen O’Malley | Owen O’Malley
HADOOP-1843 | Remove deprecated code in Configuration/JobConf | Major | conf | Arun C Murthy | Arun C Murthy
HADOOP-2113 | Add “-text” command to FsShell to decode SequenceFile to stdout | Minor | fs | Chris Douglas | Chris Douglas
HADOOP-1900 | the heartbeat and task event queries interval should be set dynamically by the JobTracker | Major | . | Owen O’Malley | Amareshwari Sriramadasu
HADOOP-1302 | Remove deprecated contrib/abacus code | Major | . | Doug Cutting | Enis Soztutar
HADOOP-2349 | FSEditLog.logEdit(byte op, Writable w1, Writable w2) should accept variable numbers of Writable, instead of two. | Minor | . | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze
HADOOP-2185 | Server ports: to roll or not to roll. | Major | conf | Konstantin Shvachko | Konstantin Shvachko
HADOOP-2401 | Lease holder information should be passed in ClientProtocol.abandonBlock(…) | Major | . | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze
HADOOP-1841 | IPC server should write repsonses asynchronously | Major | ipc | Doug Cutting | dhruba borthakur
HADOOP-2432 | If HDFS is going to throw an exception “File does not exist” it should include the name of the file | Minor | . | Jim Kellerman | Jim Kellerman
HADOOP-2457 | Add a ‘forrest.home’ property for the ‘docs’ target in build.xml | Minor | documentation | Arun C Murthy | Arun C Murthy
HADOOP-2149 | Pure name-node benchmarks. | Major | . | Konstantin Shvachko | Konstantin Shvachko
HADOOP-2466 | FileInputFormat computeSplitSize() method, change visibility to protected and make it a member method | Major | . | Alejandro Abdelnur | Alejandro Abdelnur
HADOOP-2425 | TextOutputFormat should special case Text | Major | . | Owen O’Malley | Owen O’Malley
HADOOP-2208 | Reduce frequency of Counter updates in the task tracker status | Major | . | Amareshwari Sriramadasu | Amareshwari Sriramadasu
HADOOP-1719 | Improve the utilization of shuffle copier threads | Major | . | Devaraj Das | Amar Kamat
HADOOP-2390 | Document the user-controls for intermediate/output compression via forrest | Major | documentation | Arun C Murthy | Arun C Murthy
HADOOP-1660 | add support for native library toDistributedCache | Major | . | Alejandro Abdelnur | Arun C Murthy
HADOOP-2233 | General example for modeling m/r load in Java | Minor | test | Chris Douglas | Chris Douglas
HADOOP-2547 | remove use of ‘magic number’ in build.xml | Trivial | build | Hrishikesh | Hrishikesh
HADOOP-2268 | JobControl classes should use interfaces rather than implemenations | Minor | . | Adrian Woodhead | Adrian Woodhead
HADOOP-2552 | enable hdfs permission checking by default | Major | . | Doug Cutting | Doug Cutting
HADOOP-2131 | Speculative execution should be allowed for reducers only | Critical | . | Srikanth Kakani | Amareshwari Sriramadasu
HADOOP-1873 | User permissions for Map/Reduce | Major | . | Raghu Angadi | Hairong Kuang
HADOOP-1965 | Handle map output buffers better | Major | . | Devaraj Das | Amar Kamat
HADOOP-2464 | Test permissions related shell commands with DFS | Major | . | Raghu Angadi | Raghu Angadi
HADOOP-1876 | Persisting completed jobs status | Critical | . | Alejandro Abdelnur | Alejandro Abdelnur
HADOOP-2077 | Logging version number (and compiled date) at STARTUP_MSG | Trivial | . | Koji Noguchi | Arun C Murthy
HADOOP-1989 | Add support for simulated Data Nodes - helpful for testing and performance benchmarking of the Name Node without having a large cluster | Minor | . | Sanjay Radia | Sanjay Radia
HADOOP-1742 | FSNamesystem.startFile() javadoc is inconsistent | Minor | . | Konstantin Shvachko | Konstantin Shvachko
HADOOP-1707 | Remove the DFS Client disk-based cache | Major | . | dhruba borthakur | dhruba borthakur
HADOOP-2298 | ant target without source and docs | Major | build | Gautam Kowshik | Hrishikesh
HADOOP-2469 | WritableUtils.clone should take Configuration rather than JobConf | Minor | io | stack | stack
HADOOP-2596 | add SequenceFile.createWriter() method that takes block size as parameter | Minor | io | Alejandro Abdelnur | Alejandro Abdelnur
HADOOP-2645 | Additional metrics & jmx beans and cleanup to use the recent metrics libraries | Major | . | Sanjay Radia | Sanjay Radia
HADOOP-2232 | Add option to disable nagles algorithm in the IPC Server | Major | ipc | Clint Morgan | Clint Morgan
HADOOP-2566 | need FileSystem#globStatus method | Major | fs | Doug Cutting | Hairong Kuang

### BUG FIXES:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
HADOOP-2072 | RawLocalFileStatus is causing Path problems | Major | fs | Dennis Kubes |
HADOOP-1245 | value for mapred.tasktracker.tasks.maximum taken from jobtracker, not tasktracker | Major | . | Michael Bieniosek | Michael Bieniosek
HADOOP-1898 | locking for the ReflectionUtils.logThreadInfo is too conservative | Major | util | Owen O’Malley | Amareshwari Sriramadasu
HADOOP-2100 | hadoop-daemon.sh script fails if HADOOP_PID_DIR doesn’t exist | Major | scripts | Arun C Murthy | Michael Bieniosek
HADOOP-2096 | The file used to localize job.xml should be closed. | Minor | . | Amar Kamat | Amar Kamat
HADOOP-2098 | File handles for log files are still open in case of jobs with 0 maps | Major | . | Amar Kamat | Amar Kamat
HADOOP-2112 | TestMiniMRMapRedDebugScript fails due to a missing file | Blocker | . | Devaraj Das | Arun C Murthy
HADOOP-2089 | Multiple caheArchive does not work in Hadoop streaming | Critical | . | Milind Bhandarkar | Lohit Vijayarenu
HADOOP-2071 | StreamXmlRecordReader throws java.io.IOException: Mark/reset exception in hadoop 0.14 | Major | . | Lohit Vijayarenu | Lohit Vijayarenu
HADOOP-1348 | Configuration XML bug: comments inside values | Critical | conf | Eelco Lempsink | Rajagopal Natarajan
HADOOP-1952 | Streaming does not handle invalid -inputformat (typo by users for example) | Minor | . | Lohit Vijayarenu | Lohit Vijayarenu
HADOOP-2151 | FileSyste.globPaths does not validate the return list of Paths | Major | . | Lohit Vijayarenu | Lohit Vijayarenu
HADOOP-2121 | Unexpected IOException in DFSOutputStream.close() | Major | . | Raghu Angadi | Raghu Angadi
HADOOP-1130 | Remove unused ClientFinalizer in DFSClient | Major | . | Philippe Gassmann | Chris Douglas
HADOOP-2204 | DFSTestUtil.waitReplication does not wait. | Major | . | Raghu Angadi | Raghu Angadi
HADOOP-2078 | Name-node should be able to close empty files. | Major | . | Konstantin Shvachko | Konstantin Shvachko
HADOOP-1642 | Jobs using LocalJobRunner + JobControl fails | Critical | . | Johan Oskarsson | Doug Cutting
HADOOP-2104 | clover description attribute suppresses all other targets in -projecthelp | Trivial | build | Chris Douglas | Chris Douglas
HADOOP-2212 | java.lang.ArithmeticException: / by zero in ChecksumFileSystem.open | Critical | fs | Michael Bieniosek | Michael Bieniosek
HADOOP-2216 | Job UI doesnot show running tasks and complete tasks correctly. | Major | . | Amareshwari Sriramadasu | Amar Kamat
HADOOP-2272 | findbugs currently fails due to hadoop-streaming having moved | Major | build | Adrian Woodhead | stack
HADOOP-2244 | MapWritable.readFields needs to clear internal hash else instance accumulates entries forever | Major | io | stack | stack
HADOOP-1984 | some reducer stuck at copy phase and progress extremely slowly | Critical | . | Runping Qi | Amar Kamat
HADOOP-2245 | TestRecordMR and TestAggregates fail once in a while | Major | . | Devaraj Das | Adrian Woodhead
HADOOP-2275 | Erroneous detection of corrupted file when namenode fails to allocate any datanodes for newly allocated block | Major | . | dhruba borthakur | dhruba borthakur
HADOOP-2256 | TestBlockReplacement unit test failed. | Major | . | Raghu Angadi | Hairong Kuang
HADOOP-2209 | SecondaryNamenode process should exit if it encounters Runtime exceptions | Major | . | dhruba borthakur |
HADOOP-2314 | TestBlockReplacement occasionally get into an infinite loop | Major | . | Hairong Kuang | Hairong Kuang
HADOOP-2300 | mapred.tasktracker.tasks.maximum is completely ignored | Blocker | . | Owen O’Malley | Amareshwari Sriramadasu
HADOOP-2368 | Lots of unit tests fail on Windows with exception: Login failed: CreateProcess | Blocker | . | Mukund Madhugiri | Tsz Wo Nicholas Sze
HADOOP-2363 | Unit tests fail if there is another instance of Hadoop | Major | test | Raghu Angadi | Konstantin Shvachko
HADOOP-2271 | chmod in ant package target fails | Major | build | Adrian Woodhead | Adrian Woodhead
HADOOP-2313 | build does not fail when libhdfs build fails | Minor | . | Nigel Daley | Nigel Daley
HADOOP-2359 | PendingReplicationMonitor thread received exception. java.lang.InterruptedException | Major | . | Owen O’Malley | dhruba borthakur
HADOOP-2365 | Result of HashFunction.hash() contains all identical values | Minor | . | Andrzej Bialecki | Jim Kellerman
HADOOP-2323 | JobTracker.close() prints stack traces for exceptions that are not errors | Minor | . | Jim Kellerman | Jim Kellerman
HADOOP-2376 | The sort example shouldn’t override the number of maps | Major | . | Owen O’Malley | Owen O’Malley
HADOOP-2248 | Word count example is spending 24% of the time in incrCounter | Major | . | Owen O’Malley | Owen O’Malley
HADOOP-2228 | Jobs fail because job.xml exists | Major | . | Johan Oskarsson | Johan Oskarsson
HADOOP-2434 | MapFile.get on HDFS in TRUNK is WAY!!! slower than 0.15.x | Blocker | io | stack | stack
HADOOP-2459 | Running ‘ant docs tar’ includes src/docs/build in the resulting tar file | Minor | build | Nigel Daley | Nigel Daley
HADOOP-2453 | wordcount-simple example gives ParseException with examples configuration file | Blocker | . | Amareshwari Sriramadasu | Amareshwari Sriramadasu
HADOOP-2215 | Change documentation in cluster_setup.html and mapred_tutorial.html post HADOOP-1274 | Major | documentation | Amareshwari Sriramadasu | Amareshwari Sriramadasu
HADOOP-2352 | Remove AC_LIB_CHECK from src/native/configure.ac to ensure libhadoop.so doesn’t have a dependency on libz.so/liblzo.so | Major | native | Arun C Murthy | Arun C Murthy
HADOOP-2220 | Reduce tasks fail too easily because of repeated fetch failures | Blocker | . | Christian Kunz | Amar Kamat
HADOOP-2247 | Mappers fail easily due to repeated failures | Blocker | . | Srikanth Kakani | Amar Kamat
HADOOP-2452 | Eclipse plug-in build.xml issue | Trivial | build | Christophe Taton | Christophe Taton
HADOOP-2476 | Unit test fails on Windows: TestCopyFiles.testCopyFromLocalToLocal | Blocker | fs | Mukund Madhugiri | Raghu Angadi
HADOOP-2503 | REST Insert / Select | Critical | . | Billy Pearson | Bryan Duxbury
HADOOP-2492 | ConcurrentModificationException in org.apache.hadoop.ipc.Server.Responder | Major | ipc | Devaraj Das | dhruba borthakur
HADOOP-2344 | Free up the buffers (input and error) while executing a shell command before waiting for it to finish. | Major | . | Amar Kamat | Amar Kamat
HADOOP-2511 | HADOOP-2344 introduced a javadoc warning | Major | documentation | Arun C Murthy | Arun C Murthy
HADOOP-2442 | Unit test failed: org.apache.hadoop.fs.TestLocalFileSystemPermission.testLocalFSsetOwner | Critical | fs | Mukund Madhugiri | Raghu Angadi
HADOOP-2523 | Unit test fails on Windows: TestDFSShell.testFilePermissions | Blocker | . | Mukund Madhugiri | Raghu Angadi
HADOOP-2535 | Remove support for deprecated mapred.child.heap.size and indentation fix in TaskRunner.java | Minor | . | Arun C Murthy | Arun C Murthy
HADOOP-2512 | error stream handling in Shell executor | Blocker | util | Raghu Angadi | Raghu Angadi
HADOOP-2420 | Use exit code to detect normal errors while excuting ‘ls’ in Local FS | Blocker | fs | Raghu Angadi | Raghu Angadi
HADOOP-2285 | TextInputFormat is slow compared to reading files. | Major | . | Owen O’Malley | Owen O’Malley
HADOOP-2446 | TestHDFSServerPorts fails. | Major | test | Raghu Angadi | Nigel Daley
HADOOP-2537 | make build process compatible with Ant 1.7.0 | Major | build | Nigel Daley | Hrishikesh
HADOOP-1281 | Speculative map tasks aren’t getting killed although the TIP completed | Critical | . | Arun C Murthy | Arun C Murthy
HADOOP-2571 | javac generates a warning in test/o.a.h.io.FileBench | Trivial | test | Chris Douglas | Chris Douglas
HADOOP-2583 | Potential Eclipse plug-in UI loop when editing location parameters | Minor | contrib/eclipse-plugin | Christophe Taton | Christophe Taton
HADOOP-2481 | NNBench should periodically report its progress | Major | test | Hairong Kuang | Hairong Kuang
HADOOP-2601 | TestNNThroughput should not use a fixed namenode port | Major | . | Hairong Kuang | Konstantin Shvachko
HADOOP-2494 | Set +x on contrib/*/bin/* in packaged tar bundle | Major | scripts | stack | stack
HADOOP-2605 | leading slash in mapred.task.tracker.report.bindAddress | Major | conf | Konstantin Shvachko | Konstantin Shvachko
HADOOP-2620 | ‘bin/hadoop fs -help’ does not list file permissions commands. | Trivial | fs | Raghu Angadi | Raghu Angadi
HADOOP-2614 | dfs web interfaces should run as a configurable user account | Major | . | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze
HADOOP-290 | Fix Datanode transfer thread logging | Minor | . | Dennis Kubes | dhruba borthakur
HADOOP-2538 | NPE in TaskLog.java | Trivial | . | Michael Bieniosek | Michael Bieniosek
HADOOP-2582 | hadoop dfs -copyToLocal creates zero byte files, when source file does not exists | Major | . | Lohit Vijayarenu | Lohit Vijayarenu
HADOOP-2189 | Incrementing user counters should count as progress | Blocker | . | Owen O’Malley | Devaraj Das
HADOOP-2284 | BasicTypeSorterBase.compare calls progress on each compare | Major | . | Owen O’Malley | Amar Kamat
HADOOP-2649 | The ReplicationMonitor sleep period should be configurable | Blocker | . | dhruba borthakur | dhruba borthakur
HADOOP-2549 | hdfs does not honor dfs.du.reserved setting | Critical | . | Joydeep Sen Sarma | Hairong Kuang
HADOOP-2509 | Add rat target to build | Major | build | Nigel Daley | Hrishikesh
HADOOP-2659 | The commands in DFSAdmin should require admin privilege | Major | . | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze
HADOOP-2633 | Revert change to fsck made as part of permissions implementation | Blocker | . | Robert Chansler | Tsz Wo Nicholas Sze
HADOOP-2687 | 1707 added errant INFO-level logging to DFSClient | Blocker | . | stack | stack
HADOOP-2402 | Lzo compression compresses each write from TextOutputFormat | Major | io, native | Chris Douglas | Chris Douglas
HADOOP-2691 | Some junit tests fail with the exception: All datanodes are bad. Aborting… | Major | . | Hairong Kuang | dhruba borthakur
HADOOP-1195 | NullPointerException in FSNamesystem due to getDatanode() return value is not checked | Major | . | Konstantin Shvachko | dhruba borthakur
HADOOP-2640 | MultiFileSplitInputFormat always returns 1 split when avgLengthPerSplit > Integer.MAX_VALUE | Blocker | . | Frédéric Bertin | Enis Soztutar
HADOOP-2626 | RawLocalFileStatus is badly handling URIs | Major | fs | Frédéric Bertin | Doug Cutting
HADOOP-2646 | SortValidator broken with fully-qualified working directories | Blocker | test | Doug Cutting | Arun C Murthy
HADOOP-2652 | Fix permission issues for HftpFileSystem | Blocker | . | Tsz Wo Nicholas Sze | Tsz Wo Nicholas Sze
HADOOP-2092 | Pipes C++ task does not die even if the Java tasks die | Blocker | . | Amareshwari Sriramadasu | Amareshwari Sriramadasu
HADOOP-2714 | Unit test fails on Windows: rg.apache.hadoop.dfs.TestDecommission | Blocker | . | Mukund Madhugiri | dhruba borthakur
HADOOP-2576 | Namenode performance degradation over time | Blocker | . | Christian Kunz | Raghu Angadi
HADOOP-2720 | Update HOD in Hadoop 0.16 | Blocker | contrib/hod | Hemanth Yamijala | Hemanth Yamijala
HADOOP-2713 | Unit test fails on Windows: org.apache.hadoop.dfs.TestDatanodeDeath | Blocker | . | Mukund Madhugiri | dhruba borthakur
HADOOP-2639 | Reducers stuck in shuffle | Blocker | . | Amareshwari Sriramadasu | Arun C Murthy
HADOOP-2723 | Hadoop 2367- Does not respect JobConf.getProfileEnabled() | Blocker | . | Clint Morgan | Amareshwari Sriramadasu
HADOOP-2734 | docs link to lucene.apache.org | Major | documentation | Doug Cutting | Doug Cutting
HADOOP-2732 | ab{5[6-9],[6-9][6-9]}.gz should not be treated as an illegal glob | Blocker | fs | Hairong Kuang | Hairong Kuang
HADOOP-2404 | HADOOP-2185 breaks compatibility with hadoop-0.15.0 | Blocker | conf | Arun C Murthy | Owen O’Malley
HADOOP-2740 | Modify HOD to work with changes mentioned in HADOOP-2404 | Blocker | contrib/hod | Hemanth Yamijala | Hemanth Yamijala
HADOOP-2755 | dfs fsck extremely slow, dfs ls times out | Blocker | . | Christian Kunz | Tsz Wo Nicholas Sze
HADOOP-2768 | DFSIO write performance benchmark shows a regression | Blocker | . | Mukund Madhugiri | dhruba borthakur

### TESTS:

JIRA | Summary | Priority | Component | Reporter | Contributor
--- | --- | --- | --- | --- | ---
HADOOP-2000 | Re-write NNBench to use MapReduce | Major | test | Mukund Madhugiri | Mukund Madhugiri
HADOOP-2369 | Representative mix of jobs for large cluster throughput benchmarking | Major | test | Chris Douglas | Runping Qi
HADOOP-2406 | Micro-benchmark to measure read/write times through InputFormats | Major | fs, test | Chris Douglas | Chris Douglas
HADOOP-2449 | Restore the old NN Bench that was replaced by a MR NN Bench | Major | . | Sanjay Radia | Sanjay Radia
HADOOP-2431 | Test HDFS File Permissions | Major | test | Hairong Kuang | Hairong Kuang
HADOOP-2342 | create a micro-benchmark for measure local-file versus hdfs read | Major | . | Owen O’Malley | Owen O’Malley