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CHANGES.txt
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CHANGES.txt
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Hadoop Change Log
Trunk (unreleased changes)
INCOMPATIBLE CHANGES
HADOOP-4895. Remove deprecated methods DFSClient.getHints(..) and
DFSClient.isDirectory(..). (szetszwo)
HADOOP-4941. Remove deprecated FileSystem methods: getBlockSize(Path f),
getLength(Path f) and getReplication(Path src). (szetszwo)
HADOOP-4648. Remove obsolete, deprecated InMemoryFileSystem and
ChecksumDistributedFileSystem. (cdouglas via szetszwo)
HADOOP-4940. Remove a deprecated method FileSystem.delete(Path f). (Enis
Soztutar via szetszwo)
HADOOP-4010. Change semantics for LineRecordReader to read an additional
line per split- rather than moving back one character in the stream- to
work with splittable compression codecs. (Abdul Qadeer via cdouglas)
HADOOP-5094. Show hostname and separate live/dead datanodes in DFSAdmin
report. (Jakob Homan via szetszwo)
HADOOP-4942. Remove deprecated FileSystem methods getName() and
getNamed(String name, Configuration conf). (Jakob Homan via szetszwo)
HADOOP-5486. Removes the CLASSPATH string from the command line and instead
exports it in the environment. (Amareshwari Sriramadasu via ddas)
HADOOP-2827. Remove deprecated NetUtils::getServerAddress. (cdouglas)
HADOOP-5681. Change examples RandomWriter and RandomTextWriter to
use new mapreduce API. (Amareshwari Sriramadasu via sharad)
HADOOP-5680. Change org.apache.hadoop.examples.SleepJob to use new
mapreduce api. (Amareshwari Sriramadasu via sharad)
HADOOP-5699. Change org.apache.hadoop.examples.PiEstimator to use
new mapreduce api. (Amareshwari Sriramadasu via sharad)
HADOOP-5720. Introduces new task types - JOB_SETUP, JOB_CLEANUP
and TASK_CLEANUP. Removes the isMap methods from TaskID/TaskAttemptID
classes. (ddas)
HADOOP-5668. Change TotalOrderPartitioner to use new API. (Amareshwari
Sriramadasu via cdouglas)
HADOOP-5738. Split "waiting_tasks" JobTracker metric into waiting maps and
waiting reduces. (Sreekanth Ramakrishnan via cdouglas)
HADOOP-5679. Resolve findbugs warnings in core/streaming/pipes/examples.
(Jothi Padmanabhan via sharad)
HADOOP-4359. Support for data access authorization checking on Datanodes.
(Kan Zhang via rangadi)
HADOOP-5690. Change org.apache.hadoop.examples.DBCountPageView to use
new mapreduce api. (Amareshwari Sriramadasu via sharad)
HADOOP-5694. Change org.apache.hadoop.examples.dancing to use new
mapreduce api. (Amareshwari Sriramadasu via sharad)
HADOOP-5696. Change org.apache.hadoop.examples.Sort to use new
mapreduce api. (Amareshwari Sriramadasu via sharad)
HADOOP-5698. Change org.apache.hadoop.examples.MultiFileWordCount to
use new mapreduce api. (Amareshwari Sriramadasu via sharad)
HADOOP-5913. Provide ability to an administrator to stop and start
job queues. (Rahul Kumar Singh and Hemanth Yamijala via yhemanth)
NEW FEATURES
HADOOP-4268. Change fsck to use ClientProtocol methods so that the
corresponding permission requirement for running the ClientProtocol
methods will be enforced. (szetszwo)
HADOOP-3953. Implement sticky bit for directories in HDFS. (Jakob Homan
via szetszwo)
HADOOP-4368. Implement df in FsShell to show the status of a FileSystem.
(Craig Macdonald via szetszwo)
HADOOP-3741. Add a web ui to the SecondaryNameNode for showing its status.
(szetszwo)
HADOOP-5018. Add pipelined writers to Chukwa. (Ari Rabkin via cdouglas)
HADOOP-5052. Add an example computing exact digits of pi using the
Bailey-Borwein-Plouffe algorithm. (Tsz Wo (Nicholas), SZE via cdouglas)
HADOOP-4927. Adds a generic wrapper around outputformat to allow creation of
output on demand (Jothi Padmanabhan via ddas)
HADOOP-5144. Add a new DFSAdmin command for changing the setting of restore
failed storage replicas in namenode. (Boris Shkolnik via szetszwo)
HADOOP-5258. Add a new DFSAdmin command to print a tree of the rack and
datanode topology as seen by the namenode. (Jakob Homan via szetszwo)
HADOOP-4756. A command line tool to access JMX properties on NameNode
and DataNode. (Boris Shkolnik via rangadi)
HADOOP-4539. Introduce backup node and checkpoint node. (shv)
HADOOP-5363. Add support for proxying connections to multiple clusters with
different versions to hdfsproxy. (Zhiyong Zhang via cdouglas)
HADOOP-5528. Add a configurable hash partitioner operating on ranges of
BinaryComparable keys. (Klaas Bosteels via shv)
HADOOP-5257. HDFS servers may start and stop external components through
a plugin interface. (Carlos Valiente via dhruba)
HADOOP-5450. Add application-specific data types to streaming's typed bytes
interface. (Klaas Bosteels via omalley)
HADOOP-5518. Add contrib/mrunit, a MapReduce unit test framework.
(Aaron Kimball via cutting)
HADOOP-5469. Add /metrics servlet to daemons, providing metrics
over HTTP as either text or JSON. (Philip Zeyliger via cutting)
HADOOP-5467. Introduce offline fsimage image viewer. (Jakob Homan via shv)
HADOOP-5752. Add a new hdfs image processor, Delimited, to oiv. (Jakob
Homan via szetszwo)
HADOOP-5266. Adds the capability to do mark/reset of the reduce values
iterator in the Context object API. (Jothi Padmanabhan via ddas)
HADOOP-5745. Allow setting the default value of maxRunningJobs for all
pools. (dhruba via matei)
HADOOP-5643. Adds a way to decommission TaskTrackers while the JobTracker
is running. (Amar Kamat via ddas)
HADOOP-4829. Allow FileSystem shutdown hook to be disabled.
(Todd Lipcon via tomwhite)
HADOOP-5815. Sqoop: A database import tool for Hadoop.
(Aaron Kimball via tomwhite)
HADOOP-4861. Add disk usage with human-readable size (-duh).
(Todd Lipcon via tomwhite)
HADOOP-5844. Use mysqldump when connecting to local mysql instance in Sqoop.
(Aaron Kimball via tomwhite)
HADOOP-5170. Allows jobs to set max maps/reduces per-node and per-cluster.
(Matei Zaharia via ddas)
HADOOP-5897. Add name-node metrics to capture java heap usage.
(Suresh Srinivas via shv)
IMPROVEMENTS
HADOOP-4565. Added CombineFileInputFormat to use data locality information
to create splits. (dhruba via zshao)
HADOOP-4936. Improvements to TestSafeMode. (shv)
HADOOP-4985. Remove unnecessary "throw IOException" declarations in
FSDirectory related methods. (szetszwo)
HADOOP-5017. Change NameNode.namesystem declaration to private. (szetszwo)
HADOOP-4794. Add branch information from the source version control into
the version information that is compiled into Hadoop. (cdouglas via
omalley)
HADOOP-5070. Increment copyright year to 2009, remove assertions of ASF
copyright to licensed files. (Tsz Wo (Nicholas), SZE via cdouglas)
HADOOP-5037. Deprecate static FSNamesystem.getFSNamesystem(). (szetszwo)
HADOOP-5088. Include releaseaudit target as part of developer test-patch
target. (Giridharan Kesavan via nigel)
HADOOP-2721. Uses setsid when creating new tasks so that subprocesses of
this process will be within this new session (and this process will be
the process leader for all the subprocesses). Killing the process leader,
or the main Java task in Hadoop's case, kills the entire subtree of
processes. (Ravi Gummadi via ddas)
HADOOP-5097. Remove static variable JspHelper.fsn, a static reference to
a non-singleton FSNamesystem object. (szetszwo)
HADOOP-3327. Improves handling of READ_TIMEOUT during map output copying.
(Amareshwari Sriramadasu via ddas)
HADOOP-5124. Choose datanodes randomly instead of starting from the first
datanode for providing fairness. (hairong via szetszwo)
HADOOP-4930. Implement a Linux native executable that can be used to
launch tasks as users. (Sreekanth Ramakrishnan via yhemanth)
HADOOP-5122. Fix format of fs.default.name value in libhdfs test conf.
(Craig Macdonald via tomwhite)
HADOOP-5038. Direct daemon trace to debug log instead of stdout. (Jerome
Boulon via cdouglas)
HADOOP-5101. Improve packaging by adding 'all-jars' target building core,
tools, and example jars. Let findbugs depend on this rather than the 'tar'
target. (Giridharan Kesavan via cdouglas)
HADOOP-4868. Splits the hadoop script into three parts - bin/hadoop,
bin/mapred and bin/hdfs. (Sharad Agarwal via ddas)
HADOOP-1722. Adds support for TypedBytes and RawBytes in Streaming.
(Klaas Bosteels via ddas)
HADOOP-4220. Changes the JobTracker restart tests so that they take much
less time. (Amar Kamat via ddas)
HADOOP-4885. Try to restore failed name-node storage directories at
checkpoint time. (Boris Shkolnik via shv)
HADOOP-5209. Update year to 2009 for javadoc. (szetszwo)
HADOOP-5279. Remove unnecessary targets from test-patch.sh.
(Giridharan Kesavan via nigel)
HADOOP-5120. Remove the use of FSNamesystem.getFSNamesystem() from
UpgradeManagerNamenode and UpgradeObjectNamenode. (szetszwo)
HADOOP-5222. Add offset to datanode clienttrace. (Lei Xu via cdouglas)
HADOOP-5240. Skip re-building javadoc when it is already
up-to-date. (Aaron Kimball via cutting)
HADOOP-5042. Add a cleanup stage to log rollover in Chukwa appender.
(Jerome Boulon via cdouglas)
HADOOP-5264. Removes redundant configuration object from the TaskTracker.
(Sharad Agarwal via ddas)
HADOOP-5232. Enable patch testing to occur on more than one host.
(Giri Kesavan via nigel)
HADOOP-4546. Fix DF reporting for AIX. (Bill Habermaas via cdouglas)
HADOOP-5023. Add Tomcat support to HdfsProxy. (Zhiyong Zhang via cdouglas)
HADOOP-5317. Provide documentation for LazyOutput Feature.
(Jothi Padmanabhan via johan)
HADOOP-5455. Document rpc metrics context to the extent dfs, mapred, and
jvm contexts are documented. (Philip Zeyliger via cdouglas)
HADOOP-5358. Provide scripting functionality to the synthetic load
generator. (Jakob Homan via hairong)
HADOOP-5442. Paginate jobhistory display and added some search
capabilities. (Amar Kamat via acmurthy)
HADOOP-4842. Streaming now allows specifiying a command for the combiner.
(Amareshwari Sriramadasu via ddas)
HADOOP-5196. avoiding unnecessary byte[] allocation in
SequenceFile.CompressedBytes and SequenceFile.UncompressedBytes.
(hong tang via mahadev)
HADOOP-4655. New method FileSystem.newInstance() that always returns
a newly allocated FileSystem object. (dhruba)
HADOOP-4788. Set Fair scheduler to assign both a map and a reduce on each
heartbeat by default. (matei)
HADOOP-5491. In contrib/index, better control memory usage.
(Ning Li via cutting)
HADOOP-5423. Include option of preserving file metadata in
SequenceFile::sort. (Michael Tamm via cdouglas)
HADOOP-5331. Add support for KFS appends. (Sriram Rao via cdouglas)
HADOOP-4365. Make Configuration::getProps protected in support of
meaningful subclassing. (Steve Loughran via cdouglas)
HADOOP-2413. Remove the static variable FSNamesystem.fsNamesystemObject.
(Konstantin Shvachko via szetszwo)
HADOOP-4584. Improve datanode block reports and associated file system
scan to avoid interefering with normal datanode operations.
(Suresh Srinivas via rangadi)
HADOOP-5502. Documentation for backup and checkpoint nodes.
(Jakob Homan via shv)
HADOOP-5485. Mask actions in the fair scheduler's servlet UI based on
value of webinterface.private.actions.
(Vinod Kumar Vavilapalli via yhemanth)
HADOOP-5581. HDFS should throw FileNotFoundException when while opening
a file that does not exist. (Brian Bockelman via rangadi)
HADOOP-5509. PendingReplicationBlocks does not start monitor in the
constructor. (shv)
HADOOP-5494. Modify sorted map output merger to lazily read values,
rather than buffering at least one record for each segment. (Devaraj Das
via cdouglas)
HADOOP-5396. Provide ability to refresh queue ACLs in the JobTracker
without having to restart the daemon.
(Sreekanth Ramakrishnan and Vinod Kumar Vavilapalli via yhemanth)
HADOOP-4490. Provide ability to run tasks as job owners.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-5697. Change org.apache.hadoop.examples.Grep to use new
mapreduce api. (Amareshwari Sriramadasu via sharad)
HADOOP-5625. Add operation duration to clienttrace. (Lei Xu via cdouglas)
HADOOP-5705. Improve TotalOrderPartitioner efficiency by updating the trie
construction. (Dick King via cdouglas)
HADOOP-5589. Eliminate source limit of 64 for map-side joins imposed by
TupleWritable encoding. (Jingkei Ly via cdouglas)
HADOOP-5734. Correct block placement policy description in HDFS
Design document. (Konstantin Boudnik via shv)
HADOOP-5657. Validate data in TestReduceFetch to improve merge test
coverage. (cdouglas)
HADOOP-5613. Change S3Exception to checked exception.
(Andrew Hitchcock via tomwhite)
HADOOP-5717. Create public enum class for the Framework counters in
org.apache.hadoop.mapreduce. (Amareshwari Sriramadasu via sharad)
HADOOP-5217. Split AllTestDriver for core, hdfs and mapred. (sharad)
HADOOP-5364. Add certificate expiration warning to HsftpFileSystem and HDFS
proxy. (Zhiyong Zhang via cdouglas)
HADOOP-5733. Add map/reduce slot capacity and blacklisted capacity to
JobTracker metrics. (Sreekanth Ramakrishnan via cdouglas)
HADOOP-5596. Add EnumSetWritable. (He Yongqiang via szetszwo)
HADOOP-5727. Simplify hashcode for ID types. (Shevek via cdouglas)
HADOOP-5500. In DBOutputFormat, where field names are absent permit the
number of fields to be sufficient to construct the select query. (Enis
Soztutar via cdouglas)
HADOOP-5081. Split TestCLI into HDFS, Mapred and Core tests. (sharad)
HADOOP-5015. Separate block management code from FSNamesystem. (Suresh
Srinivas via szetszwo)
HADOOP-5080. Add new test cases to TestMRCLI and TestHDFSCLI
(V.Karthikeyan via nigel)
HADOOP-5135. Splits the tests into different directories based on the
package. Four new test targets have been defined - run-test-core,
run-test-mapred, run-test-hdfs and run-test-hdfs-with-mr.
(Sharad Agarwal via ddas)
HADOOP-5771. Implements unit tests for LinuxTaskController.
(Sreekanth Ramakrishnan and Vinod Kumar Vavilapalli via yhemanth)
HADOOP-5419. Provide a facility to query the Queue ACLs for the
current user.
(Rahul Kumar Singh via yhemanth)
HADOOP-5780. Improve per block message prited by "-metaSave" in HDFS.
(Raghu Angadi)
HADOOP-5823. Added a new class DeprecatedUTF8 to help with removing
UTF8 related javac warnings. These warnings are removed in
FSEditLog.java as a use case. (Raghu Angadi)
HADOOP-5824. Deprecate DataTransferProtocol.OP_READ_METADATA and remove
the corresponding unused codes. (Kan Zhang via szetszwo)
HADOOP-5721. Factor out EditLogFileInputStream and EditLogFileOutputStream
into independent classes. (Luca Telloli & Flavio Junqueira via shv)
HADOOP-5838. Fix a few javac warnings in HDFS. (Raghu Angadi)
HADOOP-5854. Fix a few "Inconsistent Synchronization" warnings in HDFS.
(Raghu Angadi)
HADOOP-5369. Small tweaks to reduce MapFile index size. (Ben Maurer
via sharad)
HADOOP-5858. Eliminate UTF8 and fix warnings in test/hdfs-with-mr package.
(shv)
HADOOP-5866. Move DeprecatedUTF8 from o.a.h.io to o.a.h.hdfs since it may
not be used outside hdfs. (Raghu Angadi)
HADOOP-5857. Move normal java methods from hdfs .jsp files to .java files.
(szetszwo)
HADOOP-5873. Remove deprecated methods randomDataNode() and
getDatanodeByIndex(..) in FSNamesystem. (szetszwo)
HADOOP-5572. Improves the progress reporting for the sort phase for both
maps and reduces. (Ravi Gummadi via ddas)
HADOOP-5839. Fix EC2 scripts to allow remote job submission.
(Joydeep Sen Sarma via tomwhite)
HADOOP-5877. Fix javac warnings in TestHDFSServerPorts, TestCheckpoint,
TestNameEditsConfig, TestStartup and TestStorageRestore.
(Jakob Homan via shv)
HADOOP-5438. Provide a single FileSystem method to create or open-for-append
to a file. (He Yongqiang via dhruba)
HADOOP-5472. Change DistCp to support globbing of input paths. (Dhruba
Borthakur and Rodrigo Schmidt via szetszwo)
HADOOP-5175. Don't unpack libjars on classpath. (Todd Lipcon via tomwhite)
HADOOP-5620. Add an option to DistCp for preserving modification and access
times. (Rodrigo Schmidt via szetszwo)
HADOOP-5664. Change map serialization so a lock is obtained only where
contention is possible, rather than for each write. (cdouglas)
HADOOP-5896. Remove the dependency of GenericOptionsParser on
Option.withArgPattern. (Giridharan Kesavan and Sharad Agarwal via
sharad)
HADOOP-5784. Makes the number of heartbeats that should arrive a second
at the JobTracker configurable. (Amareshwari Sriramadasu via ddas)
HADOOP-5955. Changes TestFileOuputFormat so that is uses LOCAL_MR
instead of CLUSTER_MR. (Jothi Padmanabhan via das)
HADOOP-5948. Changes TestJavaSerialization to use LocalJobRunner
instead of MiniMR/DFS cluster. (Jothi Padmanabhan via das)
HADOOP-2838. Add mapred.child.env to pass environment variables to
tasktracker's child processes. (Amar Kamat via sharad)
HADOOP-5961. DataNode process understand generic hadoop command line
options (like -Ddfs.property=value). (Raghu Angadi)
HADOOP-5938. Change org.apache.hadoop.mapred.jobcontrol to use new
api. (Amareshwari Sriramadasu via sharad)
HADOOP-2141. Improves the speculative execution heuristic. The heuristic
is currently based on the progress-rates of tasks and the expected time
to complete. Also, statistics about trackers are collected, and speculative
tasks are not given to the ones deduced to be slow.
(Andy Konwinski and ddas)
OPTIMIZATIONS
HADOOP-5595. NameNode does not need to run a replicator to choose a
random DataNode. (hairong)
HADOOP-5603. Improve NameNode's block placement performance. (hairong)
HADOOP-5638. More improvement on block placement performance. (hairong)
BUG FIXES
HADOOP-5379. CBZip2InputStream to throw IOException on data crc error.
(Rodrigo Schmidt via zshao)
HADOOP-5326. Fixes CBZip2OutputStream data corruption problem.
(Rodrigo Schmidt via zshao)
HADOOP-4963. Fixes a logging to do with getting the location of
map output file. (Amareshwari Sriramadasu via ddas)
HADOOP-2337. Trash should close FileSystem on exit and should not start
emtying thread if disabled. (shv)
HADOOP-5072. Fix failure in TestCodec because testSequenceFileGzipCodec
won't pass without native gzip codec. (Zheng Shao via dhruba)
HADOOP-5050. TestDFSShell.testFilePermissions should not assume umask
setting. (Jakob Homan via szetszwo)
HADOOP-4975. Set classloader for nested mapred.join configs. (Jingkei Ly
via cdouglas)
HADOOP-5078. Remove invalid AMI kernel in EC2 scripts. (tomwhite)
HADOOP-5045. FileSystem.isDirectory() should not be deprecated. (Suresh
Srinivas via szetszwo)
HADOOP-4960. Use datasource time, rather than system time, during metrics
demux. (Eric Yang via cdouglas)
HADOOP-5032. Export conf dir set in config script. (Eric Yang via cdouglas)
HADOOP-5176. Fix a typo in TestDFSIO. (Ravi Phulari via szetszwo)
HADOOP-4859. Distinguish daily rolling output dir by adding a timestamp.
(Jerome Boulon via cdouglas)
HADOOP-4959. Correct system metric collection from top on Redhat 5.1. (Eric
Yang via cdouglas)
HADOOP-5039. Fix log rolling regex to process only the relevant
subdirectories. (Jerome Boulon via cdouglas)
HADOOP-5095. Update Chukwa watchdog to accept config parameter. (Jerome
Boulon via cdouglas)
HADOOP-5147. Correct reference to agent list in Chukwa bin scripts. (Ari
Rabkin via cdouglas)
HADOOP-5148. Fix logic disabling watchdog timer in Chukwa daemon scripts.
(Ari Rabkin via cdouglas)
HADOOP-5100. Append, rather than truncate, when creating log4j metrics in
Chukwa. (Jerome Boulon via cdouglas)
HADOOP-5204. Fix broken trunk compilation on Hudson by letting
task-controller be an independent target in build.xml.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-5212. Fix the path translation problem introduced by HADOOP-4868
running on cygwin. (Sharad Agarwal via omalley)
HADOOP-5226. Add license headers to html and jsp files. (szetszwo)
HADOOP-5172. Disable misbehaving Chukwa unit test until it can be fixed.
(Jerome Boulon via nigel)
HADOOP-4933. Fixes a ConcurrentModificationException problem that shows up
when the history viewer is accessed concurrently.
(Amar Kamat via ddas)
HADOOP-5253. Remove duplicate call to cn-docs target.
(Giri Kesavan via nigel)
HADOOP-5251. Fix classpath for contrib unit tests to include clover jar.
(nigel)
HADOOP-5206. Synchronize "unprotected*" methods of FSDirectory on the root.
(Jakob Homan via shv)
HADOOP-5292. Fix NPE in KFS::getBlockLocations. (Sriram Rao via lohit)
HADOOP-5219. Adds a new property io.seqfile.local.dir for use by SequenceFile,
which earlier used mapred.local.dir. (Sharad Agarwal via ddas)
HADOOP-5300. Fix ant javadoc-dev target and the typo in the class name
NameNodeActivtyMBean. (szetszwo)
HADOOP-5218. libhdfs unit test failed because it was unable to
start namenode/datanode. Fixed. (dhruba)
HADOOP-5273. Add license header to TestJobInProgress.java. (Jakob Homan
via szetszwo)
HADOOP-5229. Remove duplicate version variables in build files
(Stefan Groschupf via johan)
HADOOP-5383. Avoid building an unused string in NameNode's
verifyReplication(). (Raghu Angadi)
HADOOP-5347. Create a job output directory for the bbp examples. (szetszwo)
HADOOP-5341. Make hadoop-daemon scripts backwards compatible with the
changes in HADOOP-4868. (Sharad Agarwal via yhemanth)
HADOOP-5456. Fix javadoc links to ClientProtocol#restoreFailedStorage(..).
(Boris Shkolnik via szetszwo)
HADOOP-5458. Remove leftover Chukwa entries from build, etc. (cdouglas)
HADOOP-5386. Modify hdfsproxy unit test to start on a random port,
implement clover instrumentation. (Zhiyong Zhang via cdouglas)
HADOOP-5511. Add Apache License to EditLogBackupOutputStream. (shv)
HADOOP-5507. Fix JMXGet javadoc warnings. (Boris Shkolnik via szetszwo)
HADOOP-5191. Accessing HDFS with any ip or hostname should work as long
as it points to the interface NameNode is listening on. (Raghu Angadi)
HADOOP-5561. Add javadoc.maxmemory parameter to build, preventing OOM
exceptions from javadoc-dev. (Jakob Homan via cdouglas)
HADOOP-5149. Modify HistoryViewer to ignore unfamiliar files in the log
directory. (Hong Tang via cdouglas)
HADOOP-5477. Fix rare failure in TestCLI for hosts returning variations of
'localhost'. (Jakob Homan via cdouglas)
HADOOP-5194. Disables setsid for tasks run on cygwin.
(Ravi Gummadi via ddas)
HADOOP-5322. Fix misleading/outdated comments in JobInProgress.
(Amareshwari Sriramadasu via cdouglas)
HADOOP-5198. Fixes a problem to do with the task PID file being absent and
the JvmManager trying to look for it. (Amareshwari Sriramadasu via ddas)
HADOOP-5464. DFSClient did not treat write timeout of 0 properly.
(Raghu Angadi)
HADOOP-4045. Fix processing of IO errors in EditsLog.
(Boris Shkolnik via shv)
HADOOP-5462. Fixed a double free bug in the task-controller
executable. (Sreekanth Ramakrishnan via yhemanth)
HADOOP-5652. Fix a bug where in-memory segments are incorrectly retained in
memory. (cdouglas)
HADOOP-5533. Recovery duration shown on the jobtracker webpage is
inaccurate. (Amar Kamat via sharad)
HADOOP-5647. Fix TestJobHistory to not depend on /tmp. (Ravi Gummadi
via sharad)
HADOOP-5661. Fixes some findbugs warnings in o.a.h.mapred* packages and
supresses a bunch of them. (Jothi Padmanabhan via ddas)
HADOOP-5704. Fix compilation problems in TestFairScheduler and
TestCapacityScheduler. (Chris Douglas via szetszwo)
HADOOP-5650. Fix safemode messages in the Namenode log. (Suresh Srinivas
via szetszwo)
HADOOP-5488. Removes the pidfile management for the Task JVM from the
framework and instead passes the PID back and forth between the
TaskTracker and the Task processes. (Ravi Gummadi via ddas)
HADOOP-5658. Fix Eclipse templates. (Philip Zeyliger via shv)
HADOOP-5709. Remove redundant synchronization added in HADOOP-5661. (Jothi
Padmanabhan via cdouglas)
HADOOP-5715. Add conf/mapred-queue-acls.xml to the ignore lists.
(szetszwo)
HADOOP-5612. Some c++ scripts are not chmodded before ant execution.
(Todd Lipcon via tomwhite)
HADOOP-5611. Fix C++ libraries to build on Debian Lenny. (Todd Lipcon
via tomwhite)
HADOOP-5592. Fix typo in Streaming doc in reference to GzipCodec.
(Corinne Chandel via tomwhite)
HADOOP-5656. Counter for S3N Read Bytes does not work. (Ian Nowland
via tomwhite)
HADOOP-5406. Fix JNI binding for ZlibCompressor::setDictionary. (Lars
Francke via cdouglas)
HADOOP-3426. Fix/provide handling when DNS lookup fails on the loopback
address. Also cache the result of the lookup. (Steve Loughran via cdouglas)
HADOOP-5476. Close the underlying InputStream in SequenceFile::Reader when
the constructor throws an exception. (Michael Tamm via cdouglas)
HADOOP-5675. Do not launch a job if DistCp has no work to do. (Tsz Wo
(Nicholas), SZE via cdouglas)
HADOOP-5737. Fixes a problem in the way the JobTracker used to talk to
other daemons like the NameNode to get the job's files. Also adds APIs
in the JobTracker to get the FileSystem objects as per the JobTracker's
configuration. (Amar Kamat via ddas)
HADOOP-5648. Not able to generate gridmix.jar on the already compiled version of hadoop.
(gkesavan)
HADOOP-5808. Fix import never used javac warnings in hdfs. (szetszwo)
HADOOP-5203. TT's version build is too restrictive. (Rick Cox via sharad)
HADOOP-5818. Revert the renaming from FSNamesystem.checkSuperuserPrivilege
to checkAccess by HADOOP-5643. (Amar Kamat via szetszwo)
HADOOP-5820. Fix findbugs warnings for http related codes in hdfs.
(szetszwo)
HADOOP-5822. Fix javac warnings in several dfs tests related to unncessary
casts. (Jakob Homan via szetszwo)
HADOOP-5842. Fix a few javac warnings under packages fs and util.
(Hairong Kuang via szetszwo)
HADOOP-5845. Build successful despite test failure on test-core target.
(sharad)
HADOOP-5314. Prevent unnecessary saving of the file system image during
name-node startup. (Jakob Homan via shv)
HADOOP-5855. Fix javac warnings for DisallowedDatanodeException and
UnsupportedActionException. (szetszwo)
HADOOP-5582. Fixes a problem in Hadoop Vaidya to do with reading
counters from job history files. (Suhas Gogate via ddas)
HADOOP-5829. Fix javac warnings found in ReplicationTargetChooser,
FSImage, Checkpointer, SecondaryNameNode and a few other hdfs classes.
(Suresh Srinivas via szetszwo)
HADOOP-5835. Fix findbugs warnings found in Block, DataNode, NameNode and
a few other hdfs classes. (Suresh Srinivas via szetszwo)
HADOOP-5853. Undeprecate HttpServer.addInternalServlet method. (Suresh
Srinivas via szetszwo)
HADOOP-5801. Fixes the problem: If the hosts file is changed across restart
then it should be refreshed upon recovery so that the excluded hosts are
lost and the maps are re-executed. (Amar Kamat via ddas)
HADOOP-5841. Resolve findbugs warnings in DistributedFileSystem,
DatanodeInfo, BlocksMap, DataNodeDescriptor. (Jakob Homan via szetszwo)
HADOOP-5878. Fix import and Serializable javac warnings found in hdfs jsp.
(szetszwo)
HADOOP-5782. Revert a few formatting changes introduced in HADOOP-5015.
(Suresh Srinivas via rangadi)
HADOOP-5687. NameNode throws NPE if fs.default.name is the default value.
(Philip Zeyliger via shv)
HADOOP-5867. Fix javac warnings found in NNBench and NNBenchWithoutMR.
(Konstantin Boudnik via szetszwo)
HADOOP-5728. Fixed FSEditLog.printStatistics IndexOutOfBoundsException.
(Wang Xu via johan)
HADOOP-5847. Fixed failing Streaming unit tests (gkesavan)
HADOOP-5252. Streaming overrides -inputformat option (Klaas Bosteels
via sharad)
HADOOP-5710. Counter MAP_INPUT_BYTES missing from new mapreduce api.
(Amareshwari Sriramadasu via sharad)
HADOOP-5809. Fix job submission, broken by errant directory creation.
(Sreekanth Ramakrishnan and Jothi Padmanabhan via cdouglas)
HADOOP-5759. Fix for IllegalArgumentException when
CombineFileInputFormat is used as job InputFormat.
(Amareshwari Sriramadasu via dhruba)
HADOOP-5635. Change distributed cache to work with other distributed file
systems. (Andrew Hitchcock via tomwhite)
HADOOP-5856. Fix "unsafe multithreaded use of DateFormat" findbugs warning
in DataBlockScanner. (Kan Zhang via szetszwo)
HADOOP-4864. Fixes a problem to do with -libjars with multiple jars when
client and cluster reside on different OSs. (Amareshwari Sriramadasu via ddas)
HADOOP-5623. Fixes a problem to do with status messages getting overwritten
in streaming jobs. (Rick Cox and Jothi Padmanabhan via ddas)
HADOOP-5895. Fixes computation of count of merged bytes for logging.
(Ravi Gummadi via ddas)
HADOOP-5805. problem using top level s3 buckets as input/output directories.
(Ian Nowland via tomwhite)
HADOOP-5940. trunk eclipse-plugin build fails while trying to copy
commons-cli jar from the lib dir (Giridharan Kesavan via gkesavan)
HADOOP-5864. Fix DMI and OBL findbugs in packages hdfs and metrics.
(hairong)
HADOOP-5935. Fix Hudson's release audit warnings link is broken.
(Giridharan Kesavan via gkesavan)
HADOOP-5947. Delete empty TestCombineFileInputFormat.java
HADOOP-5899. Move a log message in FSEditLog to the right place for
avoiding unnecessary log. (Suresh Srinivas via szetszwo)
HADOOP-5944. Add Apache license header to BlockManager.java. (Suresh
Srinivas via szetszwo)
HADOOP-5891. SecondaryNamenode is able to converse with the NameNode
even when the default value of dfs.http.address is not overridden.
(Todd Lipcon via dhruba)
HADOOP-5953. The isDirectory(..) and isFile(..) methods in KosmosFileSystem
should not be deprecated. (szetszwo)
HADOOP-5954. Fix javac warnings in TestFileCreation, TestSmallBlock,
TestFileStatus, TestDFSShellGenericOptions, TestSeekBug and
TestDFSStartupVersions. (szetszwo)
HADOOP-5956. Fix ivy dependency in hdfsproxy and capacity-scheduler.
(Giridharan Kesavan via szetszwo)
HADOOP-5836. Bug in S3N handling of directory markers using an object with
a trailing "/" causes jobs to fail. (Ian Nowland via tomwhite)
HADOOP-5861. s3n files are not getting split by default. (tomwhite)
HADOOP-5762. Fix a problem that DistCp does not copy empty directory.
(Rodrigo Schmidt via szetszwo)
HADOOP-5859. Fix "wait() or sleep() with locks held" findbugs warnings in
DFSClient. (Kan Zhang via szetszwo)
HADOOP-5457. Fix to continue to run builds even if contrib test fails
(Giridharan Kesavan via gkesavan)
HADOOP-5963. Remove an unnecessary exception catch in NNBench. (Boris
Shkolnik via szetszwo)
HADOOP-5989. Fix streaming test failure. (gkesavan)
HADOOP-5981. Fix a bug in HADOOP-2838 in parsing mapred.child.env.
(Amar Kamat via sharad)
HADOOP-5420. Fix LinuxTaskController to kill tasks using the process
groups they are launched with.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-6031. Remove @author tags from Java source files. (Ravi Phulari
via szetszwo)
HADOOP-5980. Fix LinuxTaskController so tasks get passed
LD_LIBRARY_PATH and other environment variables.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-4041. IsolationRunner does not work as documented.
(Philip Zeyliger via tomwhite)
HADOOP-6076. Fix a broken compilation of Forrest documentation due to
misplaced tags in commands_manual.xml. (yhemanth)
HADOOP-6004. Fixes BlockLocation deserialization. (Jakob Homan via
szetszwo)
HADOOP-6079. Serialize proxySource as DatanodeInfo in DataTransferProtocol.
(szetszwo)
Release 0.20.1 - Unreleased
INCOMPATIBLE CHANGES
HADOOP-5726. Remove pre-emption from capacity scheduler code base.
(Rahul Kumar Singh via yhemanth)
HADOOP-5881. Simplify memory monitoring and scheduling related
configuration. (Vinod Kumar Vavilapalli via yhemanth)
NEW FEATURES
IMPROVEMENTS
HADOOP-5711. Change Namenode file close log to info. (szetszwo)
HADOOP-5736. Update the capacity scheduler documentation for features
like memory based scheduling, job initialization and removal of pre-emption.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-5714. Add a metric for NameNode getFileInfo operation. (Jakob Homan
via szetszwo)
HADOOP-4372. Improves the way history filenames are obtained and manipulated.
(Amar Kamat via ddas)
OPTIMIZATIONS
BUG FIXES
HADOOP-5691. Makes org.apache.hadoop.mapreduce.Reducer concrete class
instead of abstract. (Amareshwari Sriramadasu via sharad)
HADOOP-5646. Fixes a problem in TestQueueCapacities.
(Vinod Kumar Vavilapalli via ddas)
HADOOP-5655. TestMRServerPorts fails on java.net.BindException. (Devaraj
Das via hairong)
HADOOP-5654. TestReplicationPolicy.<init> fails on java.net.BindException.
(hairong)
HADOOP-5688. Fix HftpFileSystem checksum path construction. (Tsz Wo
(Nicholas) Sze via cdouglas)
HADOOP-4674. Fix fs help messages for -test, -text, -tail, -stat
and -touchz options. (Ravi Phulari via szetszwo)
HADOOP-5718. Remove the check for the default queue in capacity scheduler.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-5719. Remove jobs that failed initialization from the waiting queue
in the capacity scheduler. (Sreekanth Ramakrishnan via yhemanth)
HADOOP-4744. Attaching another fix to the jetty port issue. The TaskTracker
kills itself if it ever discovers that the port to which jetty is actually
bound is invalid (-1). (ddas)
HADOOP-5349. Fixes a problem in LocalDirAllocator to check for the return
path value that is returned for the case where the file we want to write
is of an unknown size. (Vinod Kumar Vavilapalli via ddas)
HADOOP-5636. Prevents a job from going to RUNNING state after it has been
KILLED (this used to happen when the SetupTask would come back with a
success after the job has been killed). (Amar Kamat via ddas)
HADOOP-5641. Fix a NullPointerException in capacity scheduler's memory
based scheduling code when jobs get retired. (yhemanth)
HADOOP-5828. Use absolute path for mapred.local.dir of JobTracker in
MiniMRCluster. (yhemanth)
HADOOP-4981. Fix capacity scheduler to schedule speculative tasks
correctly in the presence of High RAM jobs.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-5210. Solves a problem in the progress report of the reduce task.
(Ravi Gummadi via ddas)
HADOOP-5850. Fixes a problem to do with not being able to jobs with
0 maps/reduces. (Vinod K V via ddas)
HADOOP-4626. Correct the API links in hdfs forrest doc so that they
point to the same version of hadoop. (szetszwo)
HADOOP-5883. Fixed tasktracker memory monitoring to account for
momentary spurts in memory usage due to java's fork() model.
(yhemanth)
HADOOP-5539. Fixes a problem to do with not preserving intermediate
output compression for merged data.
(Jothi Padmanabhan and Billy Pearson via ddas)
HADOOP-5932. Fixes a problem in capacity scheduler in computing
available memory on a tasktracker.
(Vinod Kumar Vavilapalli via yhemanth)
HADOOP-5908. Fixes a problem to do with ArithmeticException in the
JobTracker when there are jobs with 0 maps. (Amar Kamat via ddas)
HADOOP-5924. Fixes a corner case problem to do with job recovery with
empty history files. Also, after a JT restart, sends KillTaskAction to
tasks that report back but the corresponding job hasn't been initialized
yet. (Amar Kamat via ddas)
HADOOP-5882. Fixes a reducer progress update problem for new mapreduce
api. (Amareshwari Sriramadasu via sharad)
HADOOP-5746. Fixes a corner case problem in Streaming, where if an exception
happens in MROutputThread after the last call to the map/reduce method, the
exception goes undetected. (Amar Kamat via ddas)
HADOOP-5884. Fixes accounting in capacity scheduler so that high RAM jobs
take more slots. (Vinod Kumar Vavilapalli via yhemanth)
HADOOP-5937. Correct a safemode message in FSNamesystem. (Ravi Phulari
via szetszwo)
HADOOP-5869. Fix bug in assignment of setup / cleanup task that was
causing TestQueueCapacities to fail.
(Sreekanth Ramakrishnan via yhemanth)
HADOOP-5921. Fixes a problem in the JobTracker where it sometimes never used
to come up due to a system file creation on JobTracker's system-dir failing.
This problem would sometimes show up only when the FS for the system-dir
(usually HDFS) is started at nearly the same time as the JobTracker.
(Amar Kamat via ddas)
HADOOP-5920. Fixes a testcase failure for TestJobHistory.
(Amar Kamat via ddas)
Release 0.20.0 - 2009-04-15
INCOMPATIBLE CHANGES
HADOOP-4210. Fix findbugs warnings for equals implementations of mapred ID
classes. Removed public, static ID::read and ID::forName; made ID an
abstract class. (Suresh Srinivas via cdouglas)
HADOOP-4253. Fix various warnings generated by findbugs.
Following deprecated methods in RawLocalFileSystem are removed:
public String getName()
public void lock(Path p, boolean shared)
public void release(Path p)
(Suresh Srinivas via johan)
HADOOP-4618. Move http server from FSNamesystem into NameNode.
FSNamesystem.getNameNodeInfoPort() is removed.
FSNamesystem.getDFSNameNodeMachine() and FSNamesystem.getDFSNameNodePort()
replaced by FSNamesystem.getDFSNameNodeAddress().
NameNode(bindAddress, conf) is removed.
(shv)
HADOOP-4567. GetFileBlockLocations returns the NetworkTopology