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CHANGES.txt
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CHANGES.txt
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Hadoop HDFS Change Log
Trunk (Unreleased)
INCOMPATIBLE CHANGES
HDFS-3034. Remove the deprecated DFSOutputStream.sync() method. (szetszwo)
HDFS-5079. Cleaning up NNHAStatusHeartbeat.State from
DatanodeProtocolProtos. (Tao Luo via shv)
HDFS-5570. Deprecate hftp / hsftp and replace them with webhdfs / swebhdfs.
(wheat9)
HDFS-2538. option to disable fsck dots (Mohammad Kamrul Islam via aw)
HDFS-7302. Remove "downgrade" from "namenode -rollingUpgrade" startup
option since it may incorrectly finalize an ongoing rolling upgrade.
(Kai Sasaki via szetszwo)
HDFS-7985. WebHDFS should be always enabled. (Li Lu via wheat9)
NEW FEATURES
HDFS-3125. Add JournalService to enable Journal Daemon. (suresh)
IMPROVEMENTS
HDFS-4665. Move TestNetworkTopologyWithNodeGroup to common.
(Junping Du via llu)
HDFS-1620. Rename HdfsConstants -> HdfsServerConstants, FSConstants ->
HdfsConstants. (Harsh J Chouraria via atm)
HDFS-2197. Refactor RPC call implementations out of NameNode class (todd)
HDFS-2572. Remove unnecessary double-check in DN#getHostName. (harsh)
HDFS-2857. Cleanup BlockInfo class. (suresh)
HDFS-2786. Fix host-based token incompatibilities in DFSUtil. (Kihwal Lee
via jitendra)
HDFS-2878. Fix TestBlockRecovery and move it back into main test directory.
(todd)
HDFS-2655. BlockReaderLocal#skip performs unnecessary IO.
(Brandon Li via jitendra)
HDFS-3009. Remove duplicate code in DFSClient#isLocalAddress by using
NetUtils. (Hari Mankude via suresh)
HDFS-3002. TestNameNodeMetrics need not wait for metrics update.
(suresh)
HDFS-3016. Security in unit tests. (Jaimin Jetly via jitendra)
HDFS-3030. Remove getProtocolVersion and getProtocolSignature from translators.
(jitendra)
HDFS-3111. Missing license headers in trunk. (umamahesh)
HDFS-3091. Update the usage limitations of ReplaceDatanodeOnFailure policy in
the config description for the smaller clusters. (szetszwo via umamahesh)
HDFS-309. FSEditLog should log progress during replay. (Sho Shimauchi
via todd)
HDFS-3131. Improve TestStorageRestore. (Brandon Li via atm)
HDFS-3178. Add states and state handler for journal synchronization in
JournalService. (szetszwo)
HDFS-3273. Refactor BackupImage and FSEditLog, and rename
JournalListener.rollLogs(..) to startLogSegment(..). (szetszwo)
HDFS-3292. Remove the deprecated DiskStatus, getDiskStatus(), getRawUsed()
and getRawCapacity() from DistributedFileSystem. (Arpit Gupta via szetszwo)
HADOOP-8285. HDFS changes for Use ProtoBuf for RpcPayLoadHeader. (sanjay
radia)
HDFS-2743. Streamline usage of bookkeeper journal manager.
(Ivan Kelly via umamahesh)
HDFS-3293. Add toString(), equals(..) and hashCode() to JournalInfo.
(Hari Mankude via szetszwo)
HDFS-3197. Incorrect class comments in a few tests. (Andy Isaacson via eli)
HDFS-3476. Correct the default used in TestDFSClientRetries.busyTest()
after HDFS-3462 (harsh)
HDFS-3478. Test quotas with Long.Max_Value. (Sujay Rau via eli)
HDFS-3630 Modify TestPersistBlocks to use both flush and hflush (sanjay)
HDFS-3768. Exception in TestJettyHelper is incorrect.
(Eli Reisman via jghoman)
HDFS-2580. NameNode#main(...) can make use of GenericOptionsParser. (harsh)
HDFS-2127. Add a test that ensure AccessControlExceptions contain
a full path. (Stephen Chu via eli)
HDFS-3995. Use DFSTestUtil.createFile() for file creation and
writing in test cases. (Jing Zhao via suresh)
HDFS-3735. NameNode WebUI should allow sorting live datanode list by fields
Block Pool Used, Block Pool Used(%) and Failed Volumes.
(Brahma Reddy Battula via suresh)
HDFS-4052. BlockManager#invalidateWork should print log outside the lock.
(Jing Zhao via suresh)
HDFS-3358. Specify explicitly that the NN UI status total is talking
of persistent objects on heap. (harsh)
HDFS-4904. Remove JournalService. (Arpit Agarwal via cnauroth)
HDFS-5041. Add the time of last heartbeat to dead server Web UI (Shinichi
Yamashita via brandonli)
HDFS-5721. sharedEditsImage in Namenode#initializeSharedEdits() should be
closed before method returns. (Ted Yu via junping_du)
HDFS-6228. comments typo fix for FsDatasetImpl.java (zhaoyunjiong via umamahesh)
HDFS-6246. Remove 'dfs.support.append' flag from trunk code. (umamahesh)
HDFS-6609. Use DirectorySnapshottableFeature to represent a snapshottable
directory. (Jing Zhao via wheat9)
HDFS-7591. hdfs classpath command should support same options as hadoop
classpath (Varun Saxena via Arpit Agarwal)
HDFS-7546. Document, and set an accepting default for
dfs.namenode.kerberos.principal.pattern (Harsh J via aw)
HDFS-316. Balancer should run for a configurable # of iterations (Xiaoyu
Yao via aw)
HDFS-7322. deprecate sbin/hadoop-daemon.sh (aw)
HDFS-7668. Convert site documentation from apt to markdown (Masatake
Iwasaki via aw)
HDFS-7460. Rewrite httpfs to use new shell framework (John Smith via aw)
HDFS-6353. Check and make checkpoint before stopping the NameNode. (jing9)
OPTIMIZATIONS
BUG FIXES
HADOOP-9635 Fix potential Stack Overflow in DomainSocket.c (V. Karthik Kumar
via cmccabe)
HDFS-2299. TestOfflineEditsViewer is failing on trunk. (Uma Maheswara Rao G
via atm)
HDFS-2310. TestBackupNode fails since HADOOP-7524 went in.
(Ivan Kelly via todd)
HDFS-2313. Rat excludes has a typo for excluding editsStored files. (atm)
HDFS-2314. MRV1 test compilation broken after HDFS-2197 (todd)
HDFS-46. Change default namespace quota of root directory from
Integer.MAX_VALUE to Long.MAX_VALUE. (Uma Maheswara Rao G via szetszwo)
HDFS-2373. Commands using WebHDFS and hftp print unnecessary debug
info on the console with security enabled. (Arpit Gupta via suresh)
HDFS-2776. Missing interface annotation on JournalSet.
(Brandon Li via jitendra)
HDFS-3037. TestMulitipleNNDataBlockScanner#testBlockScannerAfterRestart is
racy. (atm)
HDFS-3116. Typo in fetchdt error message. (AOE Takashi via atm)
HDFS-3126. Journal stream from Namenode to BackupNode needs to have
timeout. (Hari Mankude via suresh)
HDFS-3121. Add HDFS tests for HADOOP-8014 change. (John George via
suresh)
HDFS-3119. Overreplicated block is not deleted even after the replication
factor is reduced after sync follwed by closing that file. (Ashish Singhi
via umamahesh)
HDFS-3265. PowerPc Build error. (Kumar Ravi via mattf)
HDFS-2312. FSNamesystem javadoc incorrectly says its for DNs. (harsh)
HDFS-3163. TestHDFSCLI.testAll fails if the user name is not all lowercase.
(Brandon Li via atm)
HDFS-3462. TestDFSClientRetries.busyTest() should restore default
xceiver count in the config. (Madhukara Phatak via harsh)
HDFS-3550. Fix raid javadoc warnings. (Jason Lowe via daryn)
HDFS-3549. Fix dist tar build fails in hadoop-hdfs-raid project. (Jason Lowe via daryn)
HDFS-3614. Revert unused MiniDFSCluster constructor from HDFS-3049.
(acmurthy via eli)
HDFS-3792. Fix two findbugs introduced by HDFS-3695 (todd)
HDFS-3827. TestHASafeMode#assertSafemode method should be made static.
(Jing Zhao via suresh)
HDFS-3834. Remove unused static fields NAME, DESCRIPTION and Usage from
Command. (Jing Zhao via suresh)
HDFS-2434. TestNameNodeMetrics.testCorruptBlock fails intermittently.
(Jing Zhao via suresh)
HDFS-4067. TestUnderReplicatedBlocks intermittently fails due to
ReplicaAlreadyExistsException. (Jing Zhao via suresh)
HDFS-4115. TestHDFSCLI.testAll fails one test due to number format.
(Trevor Robinson via suresh)
HDFS-4105. The SPNEGO user for secondary namenode should use the web
keytab. (Arpit Gupta via jitendra)
HDFS-4003. test-patch should build the common native libs before
running hdfs tests. (Colin Patrick McCabe via eli)
HDFS-4260 Fix HDFS tests to set test dir to a valid HDFS path as opposed
to the local build path (Chri Nauroth via Sanjay)
HDFS-4310. fix test org.apache.hadoop.hdfs.server.datanode.
TestStartSecureDataNode (Ivan A. Veselovsky via atm)
HDFS-4275. MiniDFSCluster-based tests fail on Windows due to failure
to delete test namenode directory. (Chris Nauroth via suresh)
HDFS-4338. TestNameNodeMetrics#testCorruptBlock is flaky. (Andrew Wang via
atm)
HDFS-4391. TestDataTransferKeepalive fails when tests are executed in a
certain order. (Andrew Wang via atm)
HDFS-4757. Update FSDirectory#inodeMap when replacing an INodeDirectory
while setting quota. (Jing Zhao via szetszwo)
HDFS-4761. When resetting FSDirectory, the inodeMap should also be reset.
(Jing Zhao via szetszwo)
HDFS-4687. TestDelegationTokenForProxyUser#testWebHdfsDoAs is flaky with
JDK7. (Andrew Wang via atm)
HDFS-3934. duplicative dfs_hosts entries handled wrong. (Colin Patrick
McCabe)
HDFS-4366. Block Replication Policy Implementation May Skip Higher-Priority
Blocks for Lower-Priority Blocks (Derek Dagit via kihwal)
HDFS-5719. FSImage#doRollback() should close prevState before return
(Ted Yu via brandonli)
HDFS-5794. Fix the inconsistency of layout version number of
ADD_DATANODE_AND_STORAGE_UUIDS between trunk and branch-2. (jing9)
HDFS-6694. TestPipelinesFailover.testPipelineRecoveryStress tests fail
intermittently with various symptoms - debugging patch. (Yongjun Zhang via
Arpit Agarwal)
HDFS-6893. crypto subcommand is not sorted properly in hdfs's hadoop_usage
(David Luo via aw)
HDFS-6981. Fix DN upgrade with layout version change. (Arpit Agarwal)
HDFS-7204. balancer doesn't run as a daemon (aw)
HDFS-7319. Remove dead link to HFTP documentation from index.xml.
(Masatake Iwasaki via wheat9)
HDFS-7407. Minor typo in privileged pid/out/log names (aw)
HDFS-7581. HDFS documentation needs updating post-shell rewrite (aw)
HADOOP-11484. hadoop-mapreduce-client-nativetask fails to build on ARM
AARCH64 due to x86 asm statements (Edward Nevill via Colin P. McCabe)
HDFS-7667. Various typos and improvements to HDFS Federation doc
(Charles Lamb via aw)
HDFS-3750. API docs don't include HDFS (Jolly Chen via aw)
HDFS-7320. The appearance of hadoop-hdfs-httpfs site docs is inconsistent
(Masatake Iwasaki via aw)
HDFS-7670. HDFS Quota guide has typos, incomplete command lines
(Brahma Reddy Battula via aw)
HDFS-7669. HDFS Design Doc references commands that no longer exist.
(Brahma Reddy Battula via aw)
HDFS-7755. httpfs shell code has hardcoded path to bash (Dmitry
Sivachenko via aw)
HDFS-7711. Fix various typos in ClusterSetup.md.
(Brahma Reddy Battula via wheat9)
HDFS-7791. dfs count -v should be added to quota documentation (Akira
AJISAKA via aw)
HDFS-7803. Wrong command mentioned in HDFSHighAvailabilityWithQJM
documentation (Arshad Mohammad via aw)
HDFS-4681. TestBlocksWithNotEnoughRacks#testCorruptBlockRereplicatedAcrossRacks
fails using IBM java (Ayappan via aw)
HDFS-8110. Remove unsupported 'hdfs namenode -rollingUpgrade downgrade'
from document. (J.Andreina via aajisaka)
HDFS-7673. synthetic load generator docs give incorrect/incomplete commands
(Brahma Reddy Battula via aw)
Release 2.8.0 - UNRELEASED
INCOMPATIBLE CHANGES
HDFS-8135. Remove the deprecated FSConstants class. (Li Lu via wheat9)
NEW FEATURES
HDFS-7891. A block placement policy with best rack failure tolerance.
(Walter Su via szetszwo)
IMPROVEMENTS
HDFS-3918. EditLogTailer shouldn't log WARN when other node
is in standby mode (todd via harsh)
HDFS-4396. Add START_MSG/SHUTDOWN_MSG for ZKFC
(Liang Xie via harsh)
HDFS-7875. Improve log message when wrong value configured for
dfs.datanode.failed.volumes.tolerated.
(nijel via harsh)
HDFS-2360. Ugly stacktrace when quota exceeds. (harsh)
HDFS-7835. make initial sleeptime in locateFollowingBlock configurable for
DFSClient. (Zhihai Xu via Yongjun Zhang)
HDFS-7829. Code clean up for LocatedBlock. (Takanobu Asanuma via jing9)
HDFS-7854. Separate class DataStreamer out of DFSOutputStream. (Li Bo via
jing9)
HDFS-7713. Implement mkdirs in the HDFS Web UI. (Ravi Prakash via wheat9)
HDFS-7928. Scanning blocks from disk during rolling upgrade startup takes
a lot of time if disks are busy (Rushabh S Shah via kihwal)
HDFS-7990. IBR delete ack should not be delayed. (daryn via kihwal)
HDFS-8004. Use KeyProviderCryptoExtension#warmUpEncryptedKeys when creating
an encryption zone. (awang via asuresh)
HDFS-6263. Remove DRFA.MaxBackupIndex config from log4j.properties.
(Abhiraj Butala via aajisaka)
HDFS-6408. Remove redundant definitions in log4j.properties.
(Abhiraj Butala via aajisaka)
HDFS-7890. Improve information on Top users for metrics in
RollingWindowsManager and lower log level (J.Andreina via vinayakumarb)
HDFS-7645. Rolling upgrade is restoring blocks from trash multiple times.
(Vinayakumar B and Keisuke Ogiwara via Arpit Agarwal)
HDFS-7944. Minor cleanup of BlockPoolManager#getAllNamenodeThreads.
(Arpit Agarwal)
HDFS-7671. hdfs user guide should point to the common rack awareness doc.
(Kai Sasaki via aajisaka)
HDFS-8009. Signal congestion on the DataNode. (wheat9)
HDFS-7978. Add LOG.isDebugEnabled() guard for some LOG.debug(..).
(Walter Su via wang)
HDFS-7888. Change DFSOutputStream and DataStreamer for convenience of
subclassing. (Li Bo via szetszwo)
HDFS-8049. Add @InterfaceAudience.Private annotation to hdfs client
implementation. (Takuya Fukudome via szetszwo)
HDFS-8079. Move dfs.client.retry.* confs from DFSConfigKeys to
HdfsClientConfigKeys.Retry. (szetszwo)
HDFS-8073. Split BlockPlacementPolicyDefault.chooseTarget(..) so it
can be easily overrided. (Walter Su via vinayakumarb)
HDFS-8080. Separate JSON related routines used by WebHdfsFileSystem to a
package local class. (wheat9)
HDFS-8085. Move CorruptFileBlockIterator to a new hdfs.client.impl package.
(szetszwo)
HDFS-8046. Allow better control of getContentSummary (kihwal)
HDFS-8076. Code cleanup for DFSInputStream: use offset instead of
LocatedBlock when possible. (Zhe Zhang via wang)
HDFS-8025. Addendum fix for HDFS-3087 Decomissioning on NN restart can
complete without blocks being replicated. (Ming Ma via wang)
HDFS-8089. Move o.a.h.hdfs.web.resources.* to the client jars. (wheat9)
HDFS-7979. Initialize block report IDs with a random number. (wang)
HDFS-8101. DFSClient use of non-constant DFSConfigKeys pulls in WebHDFS
classes at runtime. (Sean Busbey via atm)
HDFS-8099. Change "DFSInputStream has been closed already" message to
debug log level (Charles Lamb via Colin P. McCabe)
HDFS-8102. Separate webhdfs retry configuration keys from DFSConfigKeys.
(wheat9)
HDFS-8100. Refactor DFSClient.Conf to a standalone class and separates
short-circuit related conf to ShortCircuitConf. (szetszwo)
HDFS-8103. Move BlockTokenSecretManager.AccessMode into
BlockTokenIdentifier. (wheat9)
HDFS-8084. Move dfs.client.failover.* confs from DFSConfigKeys to
HdfsClientConfigKeys.Failover and fix typos in the dfs.http.client.*
configuration keys. (szetszwo)
HDFS-7933. fsck should also report decommissioning replicas.
(Xiaoyu Yao via cnauroth)
HDFS-8083. Move dfs.client.write.* conf from DFSConfigKeys to
HdfsClientConfigKeys.Write. (szetszwo)
HDFS-8117. More accurate verification in SimulatedFSDataset: replace
DEFAULT_DATABYTE with patterned data. (Zhe Zhang via wang)
HDFS-8144. Split TestLazyPersistFiles into multiple tests. (Arpit Agarwal)
HDFS-8082. Move dfs.client.read.*, dfs.client.short.circuit.*,
dfs.client.mmap.* and dfs.client.hedged.read.* conf from DFSConfigKeys
to HdfsClientConfigKeys. (szetszwo)
HDFS-8165. Move GRANDFATHER_GENERATION_STAMP and GRANDFATER_INODE_ID to
hdfs-client. (wheat9)
HDFS-8152. Refactoring of lazy persist storage cases. (Arpit Agarwal)
HDFS-8169. Move LocatedBlocks and related classes to hdfs-client. (wheat9)
HDFS-8133. Improve readability of deleted block check (Daryn Sharp via
Colin P. McCabe)
HDFS-8185. Separate client related routines in HAUtil into a new class.
(wheat9)
HDFS-8218. Move classes that used by ClientProtocol into hdfs-client.
(wheat9)
HDFS-4448. Allow HA NN to start in secure mode with wildcard address
configured (atm via asuresh)
HDFS-8215. Refactor NamenodeFsck#check method. (Takanobu Asanuma
via szetszwo)
HDFS-8052. Move WebHdfsFileSystem into hadoop-hdfs-client. (wheat9)
HDFS-8176. Record from/to snapshots in audit log for snapshot diff report.
(J. Andreina via jing9)
HDFS-8280. Code Cleanup in DFSInputStream. (Jing Zhao via wheat9)
HDFS-8283. DataStreamer cleanup and some minor improvement. (szetszwo via
jing9)
OPTIMIZATIONS
HDFS-8026. Trace FSOutputSummer#writeChecksumChunks rather than
DFSOutputStream#writeChunk (cmccabe)
BUG FIXES
HDFS-7501. TransactionsSinceLastCheckpoint can be negative on SBNs.
(Gautam Gopalakrishnan via harsh)
HDFS-5356. MiniDFSCluster should close all open FileSystems when shutdown()
(Rakesh R via vinayakumarb)
HDFS-7867. Update action param from "start" to "prepare" in rolling upgrade
javadoc (J.Andreina via vinayakumarb)
HDFS-3325. When configuring "dfs.namenode.safemode.threshold-pct" to a value
greater or equal to 1 there is mismatch in the UI report
(J.Andreina via vinayakumarb)
HDFS-8002. Website refers to /trash directory. (Brahma Reddy Battula via
aajisaka)
HDFS-7261. storageMap is accessed without synchronization in
DatanodeDescriptor#updateHeartbeatState() (Brahma Reddy Battula via Colin
P. McCabe)
HDFS-7997. The first non-existing xattr should also throw IOException.
(zhouyingchao via yliu)
HDFS-6945. BlockManager should remove a block from excessReplicateMap and
decrement ExcessBlocks metric when the block is removed. (aajisaka)
HDFS-7922. ShortCircuitCache#close is not releasing
ScheduledThreadPoolExecutors (Rakesh R via Colin P. McCabe)
HDFS-5215. dfs.datanode.du.reserved is not considered while computing
available space ( Brahma Reddy Battula via Yongjun Zhang)
HDFS-7725. Incorrect "nodes in service" metrics caused all writes to fail.
(Ming Ma via wang)
HDFS-8096. DatanodeMetrics#blocksReplicated will get incremented early and
even for failed transfers (vinayakumarb)
HDFS-8091: ACLStatus and XAttributes should be presented to
INodeAttributesProvider before returning to client (asuresh)
HDFS-7939. Two fsimage_rollback_* files are created which are not deleted
after rollback. (J.Andreina via vinayakumarb)
HDFS-8111. NPE thrown when invalid FSImage filename given for
'hdfs oiv_legacy' cmd ( surendra singh lilhore via vinayakumarb )
HDFS-7701. Support reporting per storage type quota and usage
with hadoop/hdfs shell. (Peter Shi via Arpit Agarwal)
HDFS-6666. Abort NameNode and DataNode startup if security is enabled but
block access token is not enabled. (Vijay Bhat via cnauroth)
HDFS-8055. NullPointerException when topology script is missing.
(Anu Engineer via cnauroth)
HDFS-8142. DistributedFileSystem encryption zone commands should resolve
relative paths. (Rakesh R via wang)
HDFS-7863. Missing description of some methods and parameters in javadoc of
FSDirDeleteOp. (Brahma Reddy Battula via ozawa)
HDFS-8043. NPE in MiniDFSCluster teardown. (Brahma Reddy Battula via ozawa)
HDFS-8173. NPE thrown at DataNode shutdown when HTTP server was not able to
create (surendra singh lilhore via vinayakumarb)
HDFS-7993. Provide each Replica details in fsck (J.Andreina via vinayakumarb)
HDFS-8217. During block recovery for truncate Log new Block Id in case of
copy-on-truncate is true. (vinayakumarb)
HDFS-8231. StackTrace displayed at client while QuotaByStorageType exceeds
(J.Andreina and Xiaoyu Yao via vinayakumarb)
HDFS-8191. Fix byte to integer casting in SimulatedFSDataset#simulatedByte.
(Zhe Zhang via wang)
HDFS-8211. DataNode UUID is always null in the JMX counter. (Anu Engineer
via Arpit Agarwal)
HDFS-8247. TestDiskspaceQuotaUpdate#testAppendOverTypeQuota is failing.
(Xiaoyu Yao via cnauroth)
HDFS-8206. Fix the typos in hadoop-hdfs-httpfs. (Brahma Reddy Battula via xyao)
HDFS-8205. CommandFormat#parse() should not parse option as
value of option. (Peter Shi and Xiaoyu Yao via Arpit Agarwal)
HDFS-8232. Missing datanode counters when using Metrics2 sink interface.
(Anu Engineer via cnauroth)
HDFS-8214. Secondary NN Web UI shows wrong date for Last Checkpoint. (clamb via wang)
Release 2.7.1 - UNRELEASED
INCOMPATIBLE CHANGES
NEW FEATURES
IMPROVEMENTS
HDFS-8081. Split getAdditionalBlock() into two methods. (shv)
HDFS-7931. DistributedFileSystem should not look for keyProvider in
cache if Encryption is disabled (asuresh)
HDFS-8204. Mover/Balancer should not schedule two replicas to the same
datanode. (Walter Su via szetszwo)
OPTIMIZATIONS
BUG FIXES
HDFS-8127. NameNode Failover during HA upgrade can cause DataNode to
finalize upgrade. (jing9)
HDFS-8151. Always use snapshot path as source when invalid snapshot names
are used for diff based distcp. (jing9)
HDFS-7934. Update RollingUpgrade rollback documentation: should use
bootstrapstandby for standby NN. (J. Andreina via jing9)
HDFS-8149. The footer of the Web UI "Hadoop, 2014" is old.
(Brahma Reddy Battula via aajisaka)
HDFS-8153. Error Message points to wrong parent directory in case of
path component name length error (Anu Engineer via jitendra)
HDFS-8179. DFSClient#getServerDefaults returns null within 1
hour of system start. (Xiaoyu Yao via Arpit Agarwal)
HDFS-7916. 'reportBadBlocks' from datanodes to standby Node BPServiceActor
goes for infinite loop (vinayakumarb)
HDFS-8163. Using monotonicNow for block report scheduling causes
test failures on recently restarted systems. (Arpit Agarwal)
HDFS-8147. StorageGroup in Dispatcher should override equals nad hashCode.
(surendra singh lilhore via szetszwo)
HDFS-8070. Pre-HDFS-7915 DFSClient cannot use short circuit on
post-HDFS-7915 DataNode (cmccabe)
HDFS-8273. FSNamesystem#Delete() should not call logSync() when holding the
lock. (wheat9)
HDFS-8269. getBlockLocations() does not resolve the .reserved path and
generates incorrect edit logs when updating the atime. (wheat9)
Release 2.7.0 - 2015-04-20
INCOMPATIBLE CHANGES
NEW FEATURES
HDFS-7278. Add a command that allows sysadmins to manually trigger full
block reports from a DN (cmccabe)
HDFS-6663. Admin command to track file and locations from block id.
(Chen He via kihwal)
HDFS-6982. nntop: top-like tool for name node users.
(Maysam Yabandeh via wang)
HDFS-7424. Add web UI for NFS gateway (brandonli)
HDFS-7449. Add metrics to NFS gateway (brandonli)
HDFS-3107. Introduce truncate. (Plamen Jeliazkov via shv)
HDFS-7056. Snapshot support for truncate. (Plamen Jeliazkov and shv)
HDFS-6673. Add delimited format support to PB OIV tool. (Eddy Xu via wang)
HDFS-7655. Expose truncate API for Web HDFS. (yliu)
HDFS-6133. Add a feature for replica pinning so that a pinned replica
will not be moved by Balancer/Mover. (zhaoyunjiong via szetszwo)
HDFS-3689. Add support for variable length block. (jing9)
HDFS-7584. Enable Quota Support for Storage Types (See breakdown of
tasks below)
HDFS-7656. Expose truncate API for HDFS httpfs. (yliu)
HDFS-6488. Support HDFS superuser in NFS gateway. (brandonli)
HDFS-7838. Expose truncate API for libhdfs. (yliu)
HDFS-6826. Plugin interface to enable delegation of HDFS authorization
assertions. (Arun Suresh via jitendra)
IMPROVEMENTS
HDFS-7752. Improve description for
"dfs.namenode.num.extra.edits.retained"
and "dfs.namenode.num.checkpoints.retained" properties on
hdfs-default.xml (Wellington Chevreuil via harsh)
HDFS-7055. Add tracing to DFSInputStream (cmccabe)
HDFS-7186. Document the "hadoop trace" command. (Masatake Iwasaki via Colin
P. McCabe)
HDFS-7202. Should be able to omit package name of SpanReceiver on "hadoop
trace -add" (iwasakims via cmccabe)
HDFS-7026. Introduce a string constant for "Failed to obtain user group
info...". (Yongjun Zhang via atm)
HDFS-7209. Populate EDEK cache when creating encryption zone. (Yi Liu via wang)
HDFS-6252. Phase out the old web UI in HDFS. (wheat9)
HDFS-7266. HDFS Peercache enabled check should not lock on object (awang
via cmccabe)
HDFS-7254. Add documentation for hot swaping DataNode drives (Lei Xu via
Colin P. McCabe)
HDFS-6877. Avoid calling checkDisk when an HDFS volume is removed during a
write. (Lei Xu via Colin P. McCabe)
HDFS-2486. Remove unnecessary priority level checks in
UnderReplicatedBlocks. (Uma Maheswara Rao G via szetszwo)
HDFS-6824. Additional user documentation for HDFS encryption. (wang)
HDFS-7165. Separate block metrics for files with replication count 1.
(Zhe Zhang via wang)
HDFS-7222. Expose DataNode network errors as a metric. (Charles Lamb via wang)
HDFS-7257. Add the time of last HA state transition to NN's /jmx page.
(Charles Lamb via wheat9)
HDFS-7223. Tracing span description of IPC client is too long (iwasakims
via cmccabe)
HDFS-7283. Bump DataNode OOM log from WARN to ERROR.
(Stephen Chu via wheat9)
HDFS-5928. Show namespace and namenode ID on NN dfshealth page.
(Siqi Li via wheat9)
HDFS-7213. processIncrementalBlockReport performance degradation.
(Eric Payne via kihwal)
HDFS-7280. Use netty 4 in WebImageViewer. (wheat9)
HDFS-3342. SocketTimeoutException in BlockSender.sendChunks could
have a better error message. (Yongjun Zhang via wang)
HDFS-7035. Make adding a new data directory to the DataNode an atomic
operation and improve error handling (Lei Xu via Colin P. McCabe)
HDFS-6917. Add an hdfs debug command to validate blocks, call recoverlease,
etc. (cmccabe)
HDFS-7356. Use DirectoryListing.hasMore() directly in nfs. (Li Lu via jing9)
HDFS-7357. FSNamesystem.checkFileProgress should log file path.
(Tsz Wo Nicholas Sze via wheat9)
HDFS-7335. Redundant checkOperation() in FSN.analyzeFileState().
(Milan Desai via shv)
HDFS-7333. Improve logging in Storage.tryLock(). (shv)
HDFS-7361. TestCheckpoint fails after change of log message related to
locking violation. (shv)
HDFS-7329. Improve logging when MiniDFSCluster fails to start.
(Byron Wong via shv)
HDFS-7336. Unused member DFSInputStream.buffersize. (Milan Desai via shv)
HDFS-7365. Remove hdfs.server.blockmanagement.MutableBlockCollection.
(Li Lu via wheat9)
HDFS-7381. Decouple the management of block id and gen stamps from
FSNamesystem. (wheat9)
HDFS-7375. Move FSClusterStats to o.a.h.h.hdfs.server.blockmanagement.
(wheat9)
HDFS-7386. Replace check "port number < 1024" with shared isPrivilegedPort
method. (Yongjun Zhang via cnauroth)
HDFS-7394. Log at INFO level, not WARN level, when InvalidToken is seen in
ShortCircuitCache (Keith Pak via Colin P. McCabe)
HDFS-7279. Use netty to implement DatanodeWebHdfsMethods. (wheat9)
HDFS-7404. Remove o.a.h.hdfs.server.datanode.web.resources.
(Li Lu via wheat9)
HDFS-7398. Reset cached thread-local FSEditLogOp's on every
FSEditLog#logEdit. (Gera Shegalov via cnauroth)
HDFS-7409. Allow dead nodes to finish decommissioning if all files are
fully replicated. (wang)
HDFS-7413. Some unit tests should use NameNodeProtocols instead of
FSNameSystem. (wheat9)
HDFS-7415. Move FSNameSystem.resolvePath() to FSDirectory. (wheat9)
HDFS-7420. Delegate permission checks to FSDirectory. (wheat9)
HDFS-7331. Add Datanode network counts to datanode jmx page. (Charles Lamb
via atm)
HDFS-7412. Move RetryCache to NameNodeRpcServer. (wheat9)
HDFS-7419. Improve error messages for DataNode hot swap drive feature (Lei
Xu via Colin P. Mccabe)
HDFS-7436. Consolidate implementation of concat(). (wheat9)
HDFS-7440. Consolidate snapshot related operations in a single class.
(wheat9)
HDFS-6803 Document DFSClient#DFSInputStream expectations reading and preading
in concurrent context. (stack via stevel)
HDFS-7310. Mover can give first priority to local DN if it has target storage type
available in local DN. (Vinayakumar B via umamahesh)
HDFS-7210. Avoid two separate RPC's namenode.append() and namenode.getFileInfo()
for an append call from DFSClient. (Vinayakumar B via umamahesh)
HDFS-7450. Consolidate the implementation of GetFileInfo(), GetListings() and
GetContentSummary() into a single class. (wheat9)
HDFS-7438. Consolidate the implementation of rename() into a single class.
(wheat9)
HDFS-7462. Consolidate implementation of mkdirs() into a single class.
(wheat9)
HDFS-7446. HDFS inotify should have the ability to determine what txid it
has read up to (cmccabe)
HDFS-6735. A minor optimization to avoid pread() be blocked by read()
inside the same DFSInputStream (Lars Hofhansl via stack)
HDFS-7458. Add description to the nfs ports in core-site.xml used by nfs
test to avoid confusion (Yongjun Zhang via brandonli)
HDFS-7468. Moving verify* functions to corresponding classes.
(Li Lu via wheat9)
HDFS-7478. Move org.apache.hadoop.hdfs.server.namenode.NNConf to
FSNamesystem. (Li Lu via wheat9)
HDFS-7474. Avoid resolving path in FSPermissionChecker. (jing9)
HDFS-7459. Consolidate cache-related implementation in FSNamesystem into
a single class. (wheat9)
HDFS-7476. Consolidate ACL-related operations to a single class.
(wheat9 via cnauroth)
HDFS-7384. 'getfacl' command and 'getAclStatus' output should be in sync.
(Vinayakumar B via cnauroth)
HDFS-7486. Consolidate XAttr-related implementation into a single class.
(wheat9)
HDFS-7498. Simplify the logic in INodesInPath. (jing9)
HDFS-7463. Simplify FSNamesystem#getBlockLocationsUpdateTimes. (wheat9)
HDFS-7509. Avoid resolving path multiple times. (jing9)
HDFS-7426. Change nntop JMX format to be a JSON blob. (wang)
HDFS-7513. HDFS inotify: add defaultBlockSize to CreateEvent (cmccabe)
HDFS-7536. Remove unused CryptoCodec in org.apache.hadoop.fs.Hdfs.
(Yi Liu via wheat9)
HDFS-7528. Consolidate symlink-related implementation into a single class.
(wheat9)
HDFS-7531. Improve the concurrent access on FsVolumeList (Lei Xu via Colin
P. McCabe)
HDFS-7373. Clean up temporary files after fsimage transfer failures.
(kihwal)
HDFS-7543. Avoid path resolution when getting FileStatus for audit logs.
(wheat9)
HDFS-7530. Allow renaming of encryption zone roots. (Charles Lamb via wang)
HDFS-7484. Make FSDirectory#addINode take existing INodes as its parameter.
(jing9)
HADOOP-11032. Replace use of Guava's Stopwatch with Hadoop's StopWatch
(ozawa)
HADOOP-11470. Remove some uses of obsolete guava APIs from the hadoop
codebase. (Sangjin Lee via Colin P. McCabe)
HDFS-7182. JMX metrics aren't accessible when NN is busy. (Ming Ma via jing9)
HDFS-7323. Move the get/setStoragePolicy commands out from dfsadmin.
(jing9 via yliu)
HDFS-7326: Add documentation for hdfs debug commands (Vijay Bhat via Colin
P. McCabe)
HDFS-7598. Remove dependency on old version of guava in
TestDFSClientCache#testEviction. (Sangjin Lee via Colin P. McCabe)
HDFS-7600. Refine hdfs admin classes to reuse common code. (jing9)
HDFS-2219. Change fsck to support fully qualified paths so that a
particular namenode in a federated cluster with multiple namenodes
can be specified in the path parameter. (szetszwo)
HDFS-7457. DatanodeID generates excessive garbage. (daryn via kihwal)
HDFS-7189. Add trace spans for DFSClient metadata operations. (Colin P.
McCabe via yliu)
HDFS-7573. Consolidate the implementation of delete() into a single class.
(wheat9)
HDFS-7640. Print NFS Client in the NFS log. (Brandon Li via wheat9)
HDFS-7623. Add htrace configuration properties to core-default.xml and
update user doc about how to enable htrace. (yliu)
HDFS-7224. Allow reuse of NN connections via webhdfs (Eric Payne via
kihwal)
HDFS-7683. Combine usages and percent stats in NameNode UI.
(Vinayakumar B via wheat9)
HDFS-7675. Remove unused member DFSClient#spanReceiverHost (cmccabe)
HDFS-7603. The background replication queue initialization may not let
others run (kihwal)
HDFS-7706. Switch BlockManager logging to use slf4j. (wang)
HDFS-5631. Change BlockMetadataHeader.readHeader(..), ChunkChecksum
class and constructor to public; and fix FsDatasetSpi to use generic type
instead of FsVolumeImpl. (David Powell and Joe Pallas via szetszwo)
HDFS-5782. Change BlockListAsLongs constructor to take Replica as parameter
type instead of concrete classes Block and ReplicaInfo. (David Powell
and Joe Pallas via szetszwo)
HDFS-7681. Change ReplicaInputStreams constructor to take InputStream(s)
instead of FileDescriptor(s). (Joe Pallas via szetszwo)
HDFS-7712. Switch blockStateChangeLog to use slf4j. (wang)
HDFS-7270. Add congestion signaling capability to DataNode write protocol.
(wheat9)
HDFS-7732. Fix the order of the parameters in DFSConfigKeys.
(Brahma Reddy Battula via aajisaka)
HDFS-7710. Remove dead code in BackupImage.java. (Xiaoyu Yao via aajisaka)
HDFS-7738. Revise the exception message for recover lease; add more truncate
tests such as truncate with HA setup, negative tests, truncate with other
operations and multiple truncates. (szetszwo)
HDFS-7743. Code cleanup of BlockInfo and rename BlockInfo to
BlockInfoContiguous. (jing9)
HDFS-7058. Tests for truncate CLI. (Dasha Boudnik via shv)
HDFS-7760. Document truncate for WebHDFS. (shv)
HDFS-7761. cleanup unnecssary code logic in LocatedBlock. (yliu)
HDFS-7703. Support favouredNodes for the append for new blocks
(vinayakumarb)
HDFS-7694. FSDataInputStream should support "unbuffer" (cmccabe)
HDFS-7684. The host:port settings of the daemons should be trimmed before
use. (Anu Engineer via aajisaka)
HDFS-7790. Do not create optional fields in DFSInputStream unless they are
needed (cmccabe)
HDFS-7430. Refactor the BlockScanner to use O(1) memory and use multiple
threads (cmccabe)
HDFS-7604. Track and display failed DataNode storage locations in NameNode.
(cnauroth)
HDFS-7797. Add audit log for setQuota operation (Rakesh R via umamahesh)
HDFS-4266. BKJM: Separate write and ack quorum (Rakesh R via umamahesh)
HDFS-7795. Show warning if not all favored nodes were chosen by namenode
(kihwal)