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Hadoop MapReduce Change Log
Trunk (unreleased changes)
INCOMPATIBLE CHANGES
NEW FEATURES
IMPROVEMENTS
MAPREDUCE-2172. Added test-patch.properties required by test-patch.sh (nigel)
MAPREDUCE-2156. Raid-aware FSCK. (Patrick Kling via dhruba)
MAPREDUCE-2215. A more elegant FileSystem#listCorruptFileBlocks API
(RAID changes) (Patrick Kling via hairong)
MAPREDUCE-1831. BlockPlacement policy for HDFS-RAID.
(Scott Chen via dhruba)
MAPREDUCE-1906. Lower minimum heartbeat interval for TaskTracker
(Scott Carey and Todd Lipcon via todd)
MAPREDUCE-1382. MRAsyncDiscService should tolerate missing local.dir.
(Zheng Shao and tomwhite via tomwhite)
MAPREDUCE-2263. MapReduce side of HADOOP-6904: RPC compatibility.
(hairong)
MAPREDUCE-1706. Log RAID recoveries on HDFS. (schen)
MAPREDUCE-2334. Update BlockPlacementPolicyRaid for the new method
in BlockPlacementPolicy. (szetszwo)
OPTIMIZATIONS
MAPREDUCE-2026. Make JobTracker.getJobCounters() and
JobInProgress.getCounters() aquire locks in a shorter time period.
(Joydeep Sen Sarma via schen)
BUG FIXES
MAPREDUCE-2199. build is broken 0.22 branch creation. (cos)
MAPREDUCE-1752. Implement getFileBlockLocations in HarFilesystem.
(Patrick Kling via dhruba)
MAPREDUCE-2155. RaidNode should optionally use the mapreduce jobs to
fix missing blocks. (Patrick Kling via dhruba)
MAPREDUCE-1334. Fix TestIndexUpdater by ignoring _SUCCESS file in HDFS.
(Kay Kay via yhemanth)
MAPREDUCE-2232. Add missing methods to TestMapredGroupMappingServiceRefresh.
(Todd Lipcon via eli)
MAPREDUCE-2271. Fix TestSetupTaskScheduling failure on trunk.
(Liyin Liang via todd)
MAPREDUCE-2290. Fix compilation error in TestTaskCommit. (eli)
MAPREDUCE-2294. Fix compilation error in mumak. (todd)
MAPREDUCE-2300. Fix TestUmbilicalProtocolWithJobToken on trunk after
HADOOP-6904. (todd)
MAPREDUCE-2296. Fix references to misspelled method name
getProtocolSigature (todd)
MAPREDUCE-2311. Fix TestFairScheduler failure (schen)
Release 0.22.0 - Unreleased
INCOMPATIBLE CHANGES
MAPREDUCE-1866. Removes deprecated class
org.apache.hadoop.streaming.UTF8ByteArrayUtils. (amareshwari)
MAPREDUCE-1664. Changes the behaviour of the combination of job-acls
when they function together with queue-acls. (Ravi Gummadi via vinodkv)
NEW FEATURES
MAPREDUCE-1804. Stress-test tool for HDFS introduced in HDFS-708.
(Joshua Harlow via shv)
MAPREDUCE-220. Collect cpu and memory statistics per task. (Scott Chen via
acmurthy)
MAPREDUCE-1970. Reed-Solomon code implementation for HDFS RAID.
(Scott Chen via dhruba)
MAPREDUCE-2169. Integrated Reed-Solomon code with RaidNode. (Ramkumar
Vadali via schen)
IMPROVEMENTS
MAPREDUCE-2141. Add an "extra data" field to Task for use by Mesos. (matei)
MAPREDUCE-2140. Regenerate fair scheduler design doc PDF. (matei)
MAPREDUCE-1546. Redirect all job pages to corresponding history page
if job is not in JT memory. (Scott Chen via sharad)
MAPREDUCE-1092. Enable assertions for unit tests. (Eli Collins via
cdouglas)
MAPREDUCE-1680. Add a metric recording JobTracker heartbeats processed.
(Dick King via cdouglas)
MAPREDUCE-1761. FairScheduler allows separate configuration of node
and rack locality wait time (Scott Chen via dhruba)
MAPREDUCE-1539. authorization checks for inter-server protocol
(based on HADOOP-6600) (Boris Shkolnik via shv)
MAPREDUCE-1798. Names the configuration keys for the Kerberos
principals better. (Boris Shkolnik via ddas)
MAPREDUCE-1773. streaming doesn't support jobclient.output.filter.
(Amareshwari Sriramadasu via vinodkv)
MAPREDUCE-1785. Add streaming config option for not emitting the key.
(Eli Collins via sharad)
MAPREDUCE-572. If #link is missing from uri format of -cacheArchive
then streaming does not throw error. (Amareshwari Sriramadasu via
vinodkv)
MAPREDUCE-1545. Add timestamps for first task type launched in job summary.
(Luke Lu via cdouglas)
MAPREDUCE-1543. Add an audit log for authentication events. (Amar Kamat and
Luke Lu via cdouglas)
MAPREDUCE-1762. Add ability to set values of task counters. (Scott Chen via
cdouglas)
MAPREDUCE-1533. Reduce overhead of logging and string manipulation during
heartbeat processing. (Amar Kamat and Dick King via cdouglas)
MAPREDUCE-1516. JobTracker issues delegation tokens only if the user's
authentication is Kerberos. (Jitendra Pandey via ddas)
MAPREDUCE-647. Update distcp forrest documentation to reflect the changes
of HADOOP-5472, MAPREDUCE-642 and HADOOP-5620. (Rodrigo Schmidt via
szetszwo)
MAPREDUCE-1851. Documents configuration parameters in streaming.
(amareshwari)
MAPREDUCE-1868. Add a read and connection timeout to JobClient while
pulling tasklogs. (Krishna Ramachandran via acmurthy)
MAPREDUCE-1788. Ensure failure to setup CompletedJobStatusStore is not
silently ignored by the JobTracker. (Krishna Ramachandran via acmurthy)
MAPREDUCE-1850. Includes job submit host information (name and ip) in
jobconf and jobdetails display (Krishna Ramachandran via amareshwari)
MAPREDUCE-1893. Slive with multiple reducers. (shv)
MAPREDUCE-1248. Fixes redudant memory copying in StreamKeyValUtil.
(Ruibang He via amareshwari)
MAPREDUCE-1840. Enhancements to Gridmix benchmark simulating user
diversity, queue replay, and task duration for JobTracker load testing.
Also includes compatibility with security enhancements, and scalability
improvements. (Amar Kamat, Rahul Singh, Hong Tang, and cdouglas)
MAPREDUCE-1848. Put number of speculative, data local, rack local
tasks in JobTracker metrics. (Scott Chen via dhruba)
MAPREDUCE-1935. Makes the Distcp to work in a secure environment.
(Boris Shkolnik via ddas)
MAPREDUCE-1945. The MapReduce component for HADOOP-6632.
(Kan Zhang & Jitendra Pandey via ddas)
MAPREDUCE-1936. Modify Gridmix3 to support more tunable parameters for
stress submission and sleep jobs. (Hong Tang via cdouglas)
MAPREDUCE-1733. Makes pipes applications secure. (Jitendra Pandey via ddas)
MAPREDUCE-1566. Adds a configuration attribute using which job clients can
specify a credentials file. The tokens from there will be passed to the job.
(Jitendra Pandey and Owen O'Malley via ddas)
MAPREDUCE-1624. Documents the job credentials and associated details to do
with delegation tokens (on the client side).
(Jitendra Pandey and Devaraj Das via ddas)
MAPREDUCE-1834. TestSimulatorDeterministicReplay timesout on trunk.
(Hong Tang via mahadev)
MAPREDUCE-1993. Fixes test failure
TestTrackerDistributedCacheManagerWithLinuxTaskController. (Devaraj Das
via amareshwari)
MAPREDUCE-1523. Making Mumak work with Capacity-Scheduler (Anirban Das
via mahadev)
MAPREDUCE-1920. Enables completed jobstatus store by default. (Tom White
via amareshwari)
MAPREDUCE-1881. Improve TaskTrackerInstrumentation to enable collection of
advanced metrics. (Matei Zaharia via acmurthy)
MAPREDUCE-1548. Hadoop archives preserve times and other properties from
original files. (Rodrigo Schmidt via dhruba)
MAPREDUCE-1517. Supports streaming job to run in the background. (Bochun Bai
via amareshwari)
MAPREDUCE-1819. RaidNode is now smarter in submitting Raid jobs. (Ramkumar
Vadali via schen)
MAPREDUCE-2132. A command line option in RaidShell to fix blocks using raid
MAPREDUCE-2147. Remove redundant lines in JobInProgress ctor.
(Harsh J Chouraria via cutting)
HADOOP-7007. Update the hudson-test-patch ant target to work with the
latest test-patch.sh script (gkesavan)
MAPREDUCE-1818. RaidNode can specify scheduling parameters. (Ramkumar
Vadali via schen)
MAPREDUCE-2051. Contribute a fair scheduler preemption system test.
(Todd Lipcon via tomwhite)
MAPREDUCE-1892. RaidNode can allow layered policies more efficiently.
(Ramkumar Vadali via schen)
MAPREDUCE-1592. Generate Eclipse's .classpath file from Ivy config.
(tomwhite via nigel)
MAPREDUCE-2073. TestTrackerDistributedCacheManager should be up-front
about requirements on build environment. (Todd Lipcon via tomwhite)
MAPREDUCE-2093. Herriot JT and TT clients should vend statistics. (cos)
MAPREDUCE-2167. Faster directory traversal for raid node. (Ramkumar Vadali
via schen)
MAPREDUCE-1931. Gridmix forrest documentation . (Ranjit Mathew via vinodkv).
MAPREDUCE-2184. Port DistRaid.java to new mapreduce API. (Ramkumar Vadali
via schen)
MAPREDUCE-1878. Add MRUnit documentation. (Aaron Kimball via tomwhite)
MAPREDUCE-2180. Add coverage of fair scheduler servlet to system test (todd)
MAPREDUCE-2250. Fix logging in raid code. (Ramkumar Vadali via schen)
MAPREDUCE-2260. Remove auto-generated native build files. (rvs via eli)
MAPREDUCE-2314. configure files that are generated as part of the released
tarball need to have executable bit set (rvs via cos)
OPTIMIZATIONS
MAPREDUCE-1354. Enhancements to JobTracker for better performance and
scalability. (Arun C. Murthy & Richard King via acmurthy)
MAPREDUCE-1829. JobInProgress.findSpeculativeTask should use min() to
find the candidate instead of sort(). (Scott Chen via vinodkv)
BUG FIXES
MAPREDUCE-1845. FairScheduler.tasksToPreempt() can return negative number.
(Scott Chen via matei)
MAPREDUCE-1707. TaskRunner can get NPE in getting ugi from TaskTracker.
(Vinod Kumar Vavilapalli)
MAPREDUCE-1532. Ensures that delegation tokens is obtained as the
actual user when the proxy-user is used for submitting jobs. Also
refactors the DelegationTokenToRenew class. (ddas)
MAPREDUCE-1558. Fixes MRAdmin to look up the principal of the
JobTracker and use that in the RefreshUserToGroupsMapping protocol and
RefreshAuthorizationPolicyProtocol. (Boris Shkolnik via ddas)
MAPREDUCE-1662. Remove unused methods from TaskRunner. (Amareshwari
Sriramadasu via cdouglas)
MAPREDUCE-1617. Use IPv4 stack for unit tests. (Amar Kamat and Luke Lu via
cdouglas)
MAPREDUCE-1599. Fixes MRBench so that it reuses tokens across jobs
correctly. (Jitendra Nath Pandey via ddas)
MAPREDUCE-1836. Refresh for proxy superuser config (mr part for HDFS-1096).
(Boris Shkolnik via shv)
MAPREDUCE-1505. Create RPC client on job submission, not in cstr of Job
instance. (Dick King via cdouglas)
MAPREDUCE-1813. NPE in PipeMapred.MRErrorThread. (Ravi Gummadi via vinodkv)
MAPREDUCE-1225. Fixes DistributedCache to check if the file is fresh or not,
for the first localization also. (Zhong Wang via amareshwari)
MAPREDUCE-1559. Fixes the token renewer to use the JobTracker's
credentials for talking to the NameNode. (ddas)
MAPREDUCE-1492. Delete obsolete har files used on the parity files
of hdfs raid. (Rodrigo Schmidt via dhruba)
MAPREDUCE-1857. Removes unused configuration parameters in streaming.
(amareshwari)
MAPREDUCE-1887. MRAsyncDiskService now properly absolutizes volume root
paths. (Aaron Kimball via zshao)
MAPREDUCE-1863. Fix NPE in Rumen when processing null CDF for failed task
attempts. (Amar Kamat via cdouglas)
MAPREDUCE-1864. Removes uninitialized/unused variables in
org.apache.hadoop.streaming.PipeMapRed. (amareshwari)
MAPREDUCE-1888. Fixes Streaming to override output key and value types,
only if mapper/reducer is a command. (Ravi Gummadi via amareshwari)
MAPREDUCE-577. Fixes duplicate records in StreamXmlRecordReader.
(Ravi Gummadi via amareshwari)
MAPREDUCE-1894. Fixed a bug in DistributedRaidFileSystem.readFully()
that was causing it to loop infinitely. (Ramkumar Vadali via dhruba)
MAPREDUCE-1838. Reduce the time needed for raiding a bunch of files
by randomly assigning files to map tasks. (Ramkumar Vadali via dhruba)
MAPREDUCE-1820. Fix InputSampler to clone sampled keys. (Alex Kozlov via
cdouglas)
MAPREDUCE-1528. Incorporates the changes to the credentials API done in
HADOOP-6845. Also, introduces Credentials in JobConf, and in JobContext.
(Jitendra Pandey and Arun Murthy via ddas)
MAPREDUCE-1865. Rumen should also support jobhistory files generated using
trunk. (Amar Kamat via amareshwari)
MAPREDUCE-1621. Fixes NPE in TextOutputReader.getLastOutput if it has never
read any output. (amareshwari)
MAPREDUCE-1911. Fixes errors in -info message in streaming. (amareshwari)
MAPREDUCE-1772. Corrects errors in streaming documentation in forrest.
(amareshwari)
MAPREDUCE-1925. Fix failing TestRumenJobTraces. (Ravi Gummadi via cdouglas)
MAPREDUCE-1718. Fixes a bug in the construction of jobconf key for the
mapping that the tasks use at runtime for looking up delegation tokens.
(Boris Shkolnik via ddas)
MAPREDUCE-1701. Fixes a problem to do with exception handling in
delegation-token renewals. (Boris Shkolnik via ddas)
MAPREDUCE-1686. Fixes StreamUtil.goodClassOrNull to find classes without
package names. (Paul Burkhardt via amareshwari)
MAPREDUCE-1288. Fixes TrackerDistributedCacheManager to take into account
the owner of the localized file in the mapping from cache URIs to
CacheStatus objects. (ddas)
MAPREDUCE-1982. Fixes Rumen's TraceBuilder to extract job name from either
of configuration properties "mapreduce.job.name" and "mapred.job.name".
(Ravi Gummadi via amareshwari)
MAPREDUCE-1958. The MapReduce part corresponding to the HADOOP-6873.
(Boris Shkolnik & Owen O'Malley via ddas)
MAPREDUCE-1900. TaskTracker and JobTracker closes FileSystems, opened on
behalf of users that it no longer requires. (Kan Zhang and ddas via ddas)
MAPREDUCE-1992. Fixes a problem to do with bringing up the JobTracker in
unsecure mode. (Kan Zhang via ddas)
MAPREDUCE-1999. Fixes ClientProtocol to use the correct
DelegationTokenSelector. (Jitendra Pandey via ddas)
MAPREDUCE-1780. AccessControlList.toString() is used for serialization of
ACL in JobStatus.java. (Ravi Gummadi via vinodkv)
MAPREDUCE-1961. Fix ConcurrentModificationException in Gridmix during
shutdown. (Hong Tang via cdouglas)
MAPREDUCE-2000. Fix parsing of JobHistory lines in Rumen when quotes are
escaped. (Hong Tang via cdouglas)
MAPREDUCE-2022. Fixes compilation errors in TestSubmitJob. (amareshwari)
MAPREDUCE-1670. RAID policies should not scan their own destination path.
(Ramkumar Vadali via dhruba)
MAPREDUCE-1668. RaidNode Hars a directory only if all its parity files
have been created. (Ramkumar Vadali via dhruba)
MAPREDUCE-2021. Fixes duplicate hostnames in CombineFileInputFormat's
split locations. (amareshwari)
MAPREDUCE-1375. Fixes flaky test TestFileArgs. (Todd Lipcon via
amareshwari)
MAPREDUCE-2023. TestDFSIO should not stop reading if curSize != bufferSize.
(Hong Tang via szetszwo)
MAPREDUCE-2031. Fixes test failures TestTaskLauncher and
TestTaskTrackerLocalization. (Ravi Gummadi via amareshwari)
MAPREDUCE-2046. Fixes CombineFileInputFormat to allow splits with size
less than DFS block size. (dhruba borthakur via amareshwari)
MAPREDUCE-1975. Fixes unnecessary InterruptedException log in gridmix.
(Ravi Gummadi via amareshwari)
MAPREDUCE-1597. Fixes CombineFileInputFormat to work with non-splittable
files. (amareshwari)
MAPREDUCE-2032. Fixes TestJobCleanup to cleanup test directory in
tearDown. (Dick King via amareshwari)
MAPREDUCE-1979. Fixes "Output directory already exists" error in gridmix
when gridmix.output.directory is not defined. (Ravi Gummadi via
amareshwari)
MAPREDUCE-1918. Adds documentation to Rumen. (Amar Kamat via amareshwari)
MAPREDUCE-2078. Fixes TraceBuilder to generate traces when a globbed job
history path is given. (Amar Kamat via amareshwari)
MAPREDUCE-1989. Fixes error message in gridmix when user resolver is set
and no user list is given. (Ravi Gummadi via amareshwari)
MAPREDUCE-2067. Distinct minicluster services (e.g. NN and JT) overwrite
each other's service policies. (Aaron T. Myers via tomwhite)
MAPREDUCE-2029. DistributedRaidFileSystem removes itself from FileSystem
cache when it is closed. (Ramkumar Vadali via dhruba)
MAPREDUCE-1816. HAR files used for RAID parity-bite have configurable
partfile size. (Ramkumar Vadali via dhruba)
MAPREDUCE-2082. Fixes Pipes to create the jobtoken file in the right
place. (Jitendra Pandey via ddas)
MAPREDUCE-2095. Fixes Gridmix to run from compressed traces. (Ranjit
Mathew via amareshwari)
MAPREDUCE-1908. DistributedRaidFileSystem now handles ChecksumException
correctly. (Ramkumar Vadali via schen)
MAPREDUCE-2126. JobQueueJobInProgressListener's javadoc is inconsistent
with source code. (Jingguo Yao via tomwhite)
MAPREDUCE-2143. HarFileSystem is able to handle spaces in pathnames.
(Ramkumar Vadali via dhruba)
MAPREDUCE-1867. Remove unused methods in
org.apache.hadoop.streaming.StreamUtil. (amareshwari via tomwhite)
MAPREDUCE-2146. Raid does not affect access time of a source file.
(Ramkumar Vadali via dhruba)
MAPREDUCE-2150. RaidNode periodically fixes corrupt blocks. (Ramkumar Vadali via
schen)
MAPREDUCE-2099. RaidNode recreates outdated parity HARs. (Ramkumar Vadali
via schen)
MAPREDUCE-2173. Fix race condition in TestBlockFixer that was
causing intermittent failure (Patrick Kling via dhruba)
MAPREDUCE-2142. Refactor RaidNode so that the map-reduce component is
clearly separated out. (Patrick Kling via dhruba)
MAPREDUCE-2179. Fix RaidBlockSender compilation failure. (Ramkumar Vadali
via schen)
MAPREDUCE-2034. TestSubmitJob triggers NPE instead of permissions error.
(Todd Lipcon via tomwhite)
MAPREDUCE-2195. New property for local conf directory in
system-test-mapreduce.xml file. (cos)
MAPREDUCE-1783. FairScheduler initializes tasks only when the job can be
run. (Ramkumar Vadali via schen)
MAPREDUCE-2224. Fix synchronization bugs in JvmManager. (todd)
MAPREDUCE-714. JobConf.findContainingJar unescapes unnecessarily on linux (todd)
MAPREDUCE-2096. Secure local filesystem IO from symlink vulnerabilities (todd)
MAPREDUCE-2234. If Localizer can't create task log directory, it should fail
on the spot. (todd)
MAPREDUCE-2219. JobTracker should not try to remove mapred.system.dir
during startup. (todd)
MAPREDUCE-2207. Task-cleanup task should not be scheduled on the node that
the task just failed. (Liyin Liang via schen)
MAPREDUCE-2084. Remove deprecate annotation for package file. The package
classes themselves are already deprecated. This removes an Eclipse error.
(tomwhite via nigel)
MAPREDUCE-2248. DistributedRaidFileSystem should unraid only the corrupt
block (Ramkumar Vadali via schen)
MAPREDUCE-1085. For tasks, "ulimit -v -1" is being run when user doesn't
specify a ulimit (todd)
MAPREDUCE-2282. Fix TestMRServerPorts for the changes in
TestHDFSServerPorts. (shv via szetszwo)
MAPREDUCE-2238. Fix permissions handling to avoid leaving undeletable
directories in local dirs. (todd)
MAPREDUCE-2277. TestCapacitySchedulerWithJobTracker needs to wait for jobs
to complete before testing status. (todd)
MAPREDUCE-2253. Servlets should specify content type (todd)
MAPREDUCE-2283. Add timeout for Raid Tests (Ramkumar Vadali via schen)
MAPREDUCE-1754. Replace mapred.persmissions.supergroup with an
acl : mapreduce.cluster.administrators (Amareshwari Sriramadasu via shv)
MAPREDUCE-2256. FairScheduler fairshare preemption from multiple pools may
preempt all tasks from one pool causing that pool to go below fairshare.
(Priyo Mustafi via shv)
MAPREDUCE-2281. MR part of HADOOP-6642. (Chris Douglas, Po Cheung via shv)
MAPREDUCE-2200. TestUmbilicalProtocolWithJobToken is failing without Krb
evironment: needs to be conditional. (cos)
MAPREDUCE-2077. Resolve name clash in the deprecated
o.a.h.util.MemoryCalculatorPlugin (Luke Lu via shv)
MAPREDUCE-2188. The new API MultithreadedMapper doesn't initialize
RecordReader. (Owen O'Malley via shv)
MAPREDUCE-1915. Fix IndexOutOfBoundsException in IndexCache.
(Priyo Mustafi via shv)
MAPREDUCE-1974. Fix multiple preemtions of the same task in FairScheduler.
(Scott Chen via shv)
MAPREDUCE-2304. Fix TestMRCLI to allow hostname with a hyphen (-).
(Priyo Mustafi via shv)
MAPREDUCE-1825. jobqueue_details.jsp and FairSchedulerServelet should not
call finishedMaps and finishedReduces when job is not initialized.
(Scott Chen via shv)
MAPREDUCE-2285. MiniMRCluster does not start after ant test-patch
(todd)
MAPREDUCE-2315. javadoc is failing in nightly build (todd)
Release 0.21.1 - Unreleased
NEW FEATURES
MAPREDUCE-2040. Forrest Documentation for Dynamic Priority Scheduler.
(Thomas Sandholm via tomwhite)
BUG FIXES
MAPREDUCE-1897. trunk build broken on compile-mapred-test (cos)
MAPREDUCE-1280. Update Eclipse plugin to the new eclipse.jdt API.
(Alex Kozlov via szetszwo)
MAPREDUCE-1984. herriot TestCluster fails because exclusion is not there
(Balaji Rajagopalan via cos)
MAPREDUCE-2090. Clover build doesn't generate per-test coverage. (cos)
MAPREDUCE-2134. ant binary-system is broken in mapreduce project. (cos)
MAPREDUCE-1905. Fixes Context.setStatus() and progress() apis.
(amareshwari)
MAPREDUCE-1809. Ant build changes for Streaming system tests in contrib
projects. (Vinay Kumar Thota via amareshwari)
MAPREDUCE-2223. TestMRCLI might fail on Ubuntu with default /etc/hosts
(cos)
MAPREDUCE-2228. Remove java5 dependencies from build. (cos)
MAPREDUCE-1929. Allow artifacts to be published to the staging Apache Nexus
Maven Repository. (tomwhite)
Release 0.21.0 - 2010-08-13
INCOMPATIBLE CHANGES
MAPREDUCE-516. Fix the starvation problem in the Capacity Scheduler
when running High RAM Jobs. (Arun Murthy via yhemanth)
MAPREDUCE-358. Change org.apache.hadoop.examples. AggregateWordCount
and org.apache.hadoop.examples.AggregateWordHistogram to use new
mapreduce api. (Amareshwari Sriramadasu via sharad)
MAPREDUCE-245. Change Job and jobcontrol classes to use the List interface
rather than ArrayList in APIs. (Tom White via cdouglas)
MAPREDUCE-766. Enhanced list-blacklisted-trackers to display reasons
for blacklisting a node. (Sreekanth Ramakrishnan via yhemanth)
MAPREDUCE-817. Add a cache for retired jobs with minimal job info and
provide a way to access history file url. (sharad)
MAPREDUCE-711. Moved Distributed Cache from Common to Map/Reduce
project. (Vinod Kumar Vavilapalli via yhemanth)
MAPREDUCE-895. Per the contract elucidated in HADOOP-6201, throw
FileNotFoundException from FileSystem::listStatus rather than returning
null. (Jakob Homan via cdouglas)
MAPREDUCE-479. Provide full task id to map output servlet rather than the
reduce id, only. (Jiaqi Tan via cdouglas)
MAPREDUCE-873. Simplify job recovery. Incomplete jobs are resubmitted on
jobtracker restart. Removes a public constructor in JobInProgress. (sharad)
HADOOP-6230. Moved process tree and memory calculator related classes from
Common to Map/Reduce. (Vinod Kumar Vavilapalli via yhemanth)
MAPREDUCE-157. Refactor job history APIs and change the history format to
JSON. (Jothi Padmanabhan via sharad)
MAPREDUCE-849. Rename configuration properties. (Amareshwari Sriramadasu
via sharad)
MAPREDUCE-1287. Only call the partitioner with more than one reducer.
(cdouglas)
MAPREDUCE-1385. Use the new UserGroupInformation from HADOOP-6299.
(ddas via omalley)
MAPREDUCE-1493. Authorization for job-history pages. (vinodkv)
MAPREDUCE-1607. Task controller may not set permissions for a
task cleanup attempt's log directory (Amareshwari Sriramadasu via vinodkv)
MAPREDUCE-1683. Remove JNI calls from ClusterStatus cstr. (Arun Murthy and
Luke Lu via cdouglas)
MAPREDUCE-1855. Makes the refresh methods (for groups and proxy users)
independent of the client side configuration. (Boris Shkolnik via ddas)
NEW FEATURES
MAPREDUCE-1774. Large-scale Automated Framework (Sharad Agarwal, Sreekanth
Ramakrishnan, Konstantin Boudnik, at all via cos)
MAPREDUCE-706. Support for FIFO pools in the fair scheduler.
(Matei Zaharia)
MAPREDUCE-546. Provide sample fair scheduler config file in conf/ and use
it by default if no other config file is specified. (Matei Zaharia)
MAPREDUCE-551. Preemption support in the Fair Scheduler. (Matei Zaharia)
MAPREDUCE-567. Add a new example MR that always fails. (Philip Zeyliger
via tomwhite)
MAPREDUCE-211. Provides ability to run a health check script on the
tasktracker nodes and blacklist nodes if they are unhealthy.
(Sreekanth Ramakrishnan via yhemanth)
MAPREDUCE-637. Add an example, distbbp, which able to compute the n th bit
of Pi for some large n. (szetszwo)
MAPREDUCE-532. Provide a way to limit the number of used slots
per queue in the capacity scheduler.
(Rahul Kumar Singh via yhemanth)
MAPREDUCE-467. Provide ability to collect statistics about total tasks
and succeeded tasks in different time windows. (sharad)
MAPREDUCE-740. Log a job-summary at the end of a job, while allowing it
to be configured to use a custom appender if desired. (acmurthy)
MAPREDUCE-814. Provide a way to configure completed job history files
to be on HDFS. (sharad)
MAPREDUCE-800. MRUnit should support the new API. (Aaron Kimball via
tomwhite)
MAPREDUCE-798. MRUnit should be able to test a succession of MapReduce
passes. (Aaron Kimball via tomwhite)
MAPREDUCE-768. Provide an option to dump jobtracker configuration in JSON
format to standard output. (V.V.Chaitanya Krishna via yhemanth)
MAPREDUCE-824. Add support for a hierarchy of queues in the capacity
scheduler. (Rahul Kumar Singh via yhemanth)
MAPREDUCE-751. Add Rumen, a tool for extracting statistics from job tracker
logs and generating job traces for simulation and analysis. (Dick King via
cdouglas)
MAPREDUCE-830. Add support for splittable compression to TextInputFormats.
(Abdul Qadeer via cdouglas)
MAPREDUCE-861. Add support for hierarchical queues in the Map/Reduce
framework. (Rahul Kumar Singh via yhemanth)
MAPREDUCE-776. Add Gridmix, a benchmark processing Rumen traces to simulate
a measured mix of jobs on a cluster. (cdouglas)
MAPREDUCE-862. Enhance JobTracker UI to display hierarchical queues.
(V.V.Chaitanya Krishna via yhemanth)
MAPREDUCE-777. Brand new apis to track and query jobs as a
replacement for JobClient. (Amareshwari Sriramadasu via acmurthy)
MAPREDUCE-775. Add native and streaming support for Vertica as an input
or output format taking advantage of parallel read and write properties of
the DBMS. (Omer Trajman via ddas)
MAPREDUCE-679. XML-based metrics as JSP servlet for JobTracker.
(Aaron Kimball via tomwhite)
MAPREDUCE-980. Modify JobHistory to use Avro for serialization. (cutting)
MAPREDUCE-728. Add Mumak, a Hadoop map/reduce simulator. (Arun C Murthy,
Tamas Sarlos, Anirban Dasgupta, Guanying Wang, and Hong Tang via cdouglas)
MAPREDUCE-1383. Automates fetching of delegation tokens in File*Formats
Distributed Cache and Distcp. Also, provides a config
mapreduce.job.hdfs-servers that the jobs can populate with a comma
separated list of namenodes. The job client automatically fetches
delegation tokens from those namenodes. (Boris Shkolnik via ddas)
MAPREDUCE-698. Per-pool task limits for the fair scheduler.
(Kevin Peterson via matei)
MAPREDUCE-1026. Does mutual authentication of the shuffle
transfers using a shared JobTracker generated key.
(Boris Shkolnik via ddas)
MAPREDUCE-744. Introduces the notion of a public distributed cache.
(Devaraj Das)
MAPREDUCE-1338. Introduces the notion of token cache using which
tokens and secrets can be sent by the Job client to the JobTracker.
(Boris Shkolnik via ddas)
HDFS-503. This patch implements an optional layer over HDFS that
implements offline erasure-coding. It can be used to reduce the
total storage requirements of HDFS. (dhruba)
MAPREDUCE-1432. Adds hooks in the jobtracker and tasktracker
for loading the tokens in the user's ugi. This is required
for the copying of files from the hdfs. (ddas)
MAPREDUCE-1335. Adds SASL Kerberos/Digest authentication in MapReduce.
(Kan Zhang via ddas)
MAPREDUCE-1464. Makes a compatible change in JobTokenIdentifier to
account for HADOOP-6510. (Jitendra Nath Pandey via ddas)
MAPREDUCE-1433. Add a delegation token for MapReduce. (omalley)
MAPREDUCE-1307. Introduces the Job level ACLs feature.
(Vinod Kumar Vavilapalli via ddas)
MAPREDUCE-1430. JobTracker automatically renews delegation tokens for jobs.
(Boris Shkolnik via ddas)
MAPREDUCE-1455. Introduces job-level authorization for mapreduce servlets.
(Ravi Gummadi via vinodkv)
IMPROVEMENTS
MAPREDUCE-463. Makes job setup and cleanup tasks as optional.
(Amareshwari Sriramadasu via sharad)
MAPREDUCE-502. Allow jobtracker to be configured with zero completed jobs
in memory. (Amar Kamat via sharad)
MAPREDUCE-416. Moves the history file to a "done" folder whenever a job
completes. (Amar Kamat via ddas)
MAPREDUCE-646. Increase srcfilelist replication number in dictcp job.
(Ravi Gummadi via szetszwo)
HADOOP-6106. Updated hadoop-core and test jars from hudson trunk
build #12. (Giridharan Kesavan)
MAPREDUCE-642. A option to distcp that allows preserving the full
source path of a file in the specified destination directory.
(Rodrigo Schmidt via dhruba)
MAPREDUCE-686. Move TestSpeculativeExecution.Fake* into a separate class
so that it can be used by other tests. (Jothi Padmanabhan via sharad)
MAPREDUCE-625. Modify TestTaskLimits to improve execution time.
(Jothi Padmanabhan via sharad)
MAPREDUCE-465. Deprecate o.a.h.mapred.lib.MultithreadedMapRunner and add
test for o.a.h.mapreduce.lib.MultithreadedMapper.
(Amareshwari Sriramadasu via sharad)
MAPREDUCE-701. Improves the runtime of the TestRackAwareTaskPlacement
by making it a unit test. (Jothi Padmanabhan via ddas)
MAPREDUCE-371. Change KeyFieldBasedComparator and KeyFieldBasedPartitioner
to use new api. (Amareshwari Sriramadasu via sharad)
MAPREDUCE-623. Resolve javac warnings in mapreduce. (Jothi Padmanabhan
via sharad)
MAPREDUCE-655. Change KeyValueLineRecordReader and KeyValueTextInputFormat
to use new mapreduce api. (Amareshwari Sriramadasu via sharad)
MAPREDUCE-632. Merge TestCustomOutputCommitter with
TestCommandLineJobSubmission. (Jothi Padmanabhan via sharad)
MAPREDUCE-627. Improves execution time of TestTrackerBlacklistAcrossJobs.
(Jothi Padmanabhan via ddas)
MAPREDUCE-630. Improves execution time of TestKillCompletedJob.
(Jothi Padmanabhan via ddas)
MAPREDUCE-626. Improves the execution time of TestLostTracker.
(Jothi Padmanabhan via ddas)
MAPREDUCE-353. Makes the shuffle read and connection timeouts
configurable. (Ravi Gummadi via ddas)
MAPREDUCE-739. Allow relative paths to be created in archives. (Mahadev
Konar via cdouglas)
MAPREDUCE-772. Merge HADOOP-4010 changes to LineRecordReader into mapreduce
package. (Abdul Qadeer via cdouglas)
MAPREDUCE-785. Separate sub-test of TestReduceFetch to be included in
MR-670. (Jothi Padmanabhan via cdouglas)
MAPREDUCE-784. Modify TestUserDefinedCounters to use LocalJobRunner
instead of MiniMR. (Jothi Padmanabhan via sharad)
HADOOP-6160. Fix releaseaudit target to run on specific directories.
(gkesavan)
MAPREDUCE-782. Use PureJavaCrc32 in SpillRecord. (Todd Lipcon via
szetszwo)
MAPREDUCE-369. Change org.apache.hadoop.mapred.lib.MultipleInputs to
use new api. (Amareshwari Sriramadasu via sharad)
MAPREDUCE-373. Change org.apache.hadoop.mapred.lib.FieldSelectionMapReduce
to use new api. (Amareshwari Sriramadasu via sharad)
MAPREDUCE-628. Improves the execution time of TestJobInProgress.
(Jothi Padmanabhan via ddas)
MAPREDUCE-793. Creates a new test that consolidates a few tests to
include in the commit-test list. (Jothi Padmanabhan via ddas)
MAPREDUCE-797. Adds combiner support to MRUnit MapReduceDriver.
(Aaron Kimball via johan)
MAPREDUCE-656. Change org.apache.hadoop.mapred.SequenceFile* classes
to use new mapreduce api. (Amareshwari Sriramadasu via sharad)
MAPREDUCE-670. Creates ant target for 10 mins patch test build.
(Jothi Padmanabhan via gkesavan)
MAPREDUCE-375. Change org.apache.hadoop.mapred.lib.NLineInputFormat
and org.apache.hadoop.mapred.MapFileOutputFormat to use new api.
(Amareshwari Sriramadasu via ddas)
MAPREDUCE-779. Added node health failure counts into
JobTrackerStatistics. (Sreekanth Ramakrishnan via yhemanth)
MAPREDUCE-842. Setup secure permissions for localized job files,
intermediate outputs and log files on tasktrackers.
(Vinod Kumar Vavilapalli via yhemanth)
MAPREDUCE-478. Allow map and reduce jvm parameters, environment variables
and ulimit to be set separately.
Configuration changes:
add mapred.map.child.java.opts
add mapred.reduce.child.java.opts
add mapred.map.child.env
add mapred.reduce.child.ulimit
add mapred.map.child.env
add mapred.reduce.child.ulimit
deprecated mapred.child.java.opts
deprecated mapred.child.env
deprecated mapred.child.ulimit
(acmurthy)
MAPREDUCE-767. Remove the dependence on the CLI 2.0 snapshot.
(Amar Kamat via omalley)
MAPREDUCE-712. Minor efficiency tweaks to RandomTextWriter. (cdouglas)
MAPREDUCE-870. Remove the job retire thread and the associated
config parameters. (sharad)
MAPREDUCE-874. Rename the PiEstimator example to QuasiMonteCarlo.
(szetszwo)
MAPREDUCE-336. Allow logging level of map/reduce tasks to be configurable.
Configuration changes:
add mapred.map.child.log.level
add mapred.reduce.child.log.level
(acmurthy)
MAPREDUCE-355. Update mapred.join package to use the new API. (Amareshwari
Sriramadasu via cdouglas)
HADOOP-6184. Updated hadoop common and test jars to get the new API
in Configuration for dumping in JSON format from Hudson trunk build #68.
(yhemanth)
MAPREDUCE-476. Extend DistributedCache to work locally (LocalJobRunner).
(Philip Zeyliger via tomwhite)
MAPREDUCE-825. JobClient completion poll interval of 5s causes slow tests
in local mode. (Aaron Kimball via tomwhite)
MAPREDUCE-910. Support counters in MRUnit. (Aaron Kimball via cdouglas)
MAPREDUCE-788. Update gridmix2 to use the new API (Amareshwari Sriramadasu
via cdouglas)
MAPREDUCE-875. Make DBRecordReader execute queries lazily. (Aaron Kimball
via enis)
MAPREDUCE-318. Modularizes the shuffle code. (Jothi Padmanabhan and
Arun Murthy via ddas)
MAPREDUCE-936. Allow a load difference for fairshare scheduler.
(Zheng Shao via dhruba)
MAPREDUCE-370. Update MultipleOutputs to use the API, merge funcitonality
of MultipleOutputFormat. (Amareshwari Sriramadasu via cdouglas)
MAPREDUCE-898. Changes DistributedCache to use the new API.
(Amareshwari Sriramadasu via ddas)
MAPREDUCE-144. Includes dump of the process tree in task diagnostics when
a task is killed due to exceeding memory limits.
(Vinod Kumar Vavilapalli via yhemanth)
MAPREDUCE-945. Modifies MRBench and TestMapRed to use ToolRunner so that
options such as queue name can be passed via command line.
(Sreekanth Ramakrishnan via yhemanth)
MAPREDUCE-963. Deprecate o.a.h.mapred.FileAlreadyExistsException and
replace it with o.a.h.fs.FileAlreadyExistsException. (Boris Shkolnik
via szetszwo)
MAPREDUCE-960. Remove an unnecessary intermediate copy and obsolete API
from KeyValueLineRecordReader. (cdouglas)
MAPREDUCE-930. Modify Rumen to resolve paths in the canonical way, rather
than defaulting to the local filesystem. (cdouglas)
MAPREDUCE-944. Extend the LoadManager API of the fair-share scheduler
to support regulating tasks for a job based on resources currently in use
by that job. (dhruba)
MAPREDUCE-973. Move FailJob and SleepJob from examples to test. (cdouglas
via omalley)
MAPREDUCE-966. Modify Rumen to clean up interfaces and simplify integration
with other tools. (Hong Tang via cdouglas)
MAPREDUCE-856. Setup secure permissions for distributed cache files.
(Vinod Kumar Vavilapalli via yhemanth)
MAPREDUCE-885. More efficient SQL queries for DBInputFormat. (Aaron Kimball
via enis)
MAPREDUCE-284. Enables ipc.client.tcpnodelay in Tasktracker's Child.
(Ravi Gummadi via sharad)
MAPREDUCE-916. Split the documentation to match the project split.
(Corinne Chandel via omalley)
MAPREDUCE-649. Validate a copy by comparing the source and destination
checksums in distcp. Also adds an intra-task retry mechanism for errors
detected during the copy. (Ravi Gummadi via cdouglas)