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| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| --> |
| <h1>Apache Hadoop Changelog</h1> |
| <div class="section"> |
| <h2><a name="Release_2.6.4_-_2016-02-11"></a>Release 2.6.4 - 2016-02-11</h2> |
| <div class="section"> |
| <h3><a name="INCOMPATIBLE_CHANGES:"></a>INCOMPATIBLE CHANGES:</h3> |
| <table border="0" class="bodyTable"> |
| <thead> |
| |
| <tr class="a"> |
| <th align="left"> JIRA </th> |
| <th align="left"> Summary </th> |
| <th align="left"> Priority </th> |
| <th align="left"> Component </th> |
| <th align="left"> Reporter </th> |
| <th align="left"> Contributor </th></tr> |
| </thead><tbody> |
| |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3154">YARN-3154</a> </td> |
| <td align="left"> Should not upload partial logs for MR jobs or other "short-running’ applications </td> |
| <td align="left"> Blocker </td> |
| <td align="left"> nodemanager, resourcemanager </td> |
| <td align="left"> Xuan Gong </td> |
| <td align="left"> Xuan Gong </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-11252">HADOOP-11252</a> </td> |
| <td align="left"> RPC client does not time out by default </td> |
| <td align="left"> Critical </td> |
| <td align="left"> ipc </td> |
| <td align="left"> Wilfred Spiegelenburg </td> |
| <td align="left"> Masatake Iwasaki </td></tr> |
| </tbody> |
| </table></div> |
| <div class="section"> |
| <h3><a name="IMPROVEMENTS:"></a>IMPROVEMENTS:</h3> |
| <table border="0" class="bodyTable"> |
| <thead> |
| |
| <tr class="a"> |
| <th align="left"> JIRA </th> |
| <th align="left"> Summary </th> |
| <th align="left"> Priority </th> |
| <th align="left"> Component </th> |
| <th align="left"> Reporter </th> |
| <th align="left"> Contributor </th></tr> |
| </thead><tbody> |
| |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-7694">HDFS-7694</a> </td> |
| <td align="left"> FSDataInputStream should support “unbuffer” </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Colin P. McCabe </td> |
| <td align="left"> Colin P. McCabe </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8722">HDFS-8722</a> </td> |
| <td align="left"> Optimize datanode writes for small writes and flushes </td> |
| <td align="left"> Critical </td> |
| <td align="left"> . </td> |
| <td align="left"> Kihwal Lee </td> |
| <td align="left"> Kihwal Lee </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8647">HDFS-8647</a> </td> |
| <td align="left"> Abstract BlockManager’s rack policy into BlockPlacementPolicy </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Ming Ma </td> |
| <td align="left"> Brahma Reddy Battula </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9314">HDFS-9314</a> </td> |
| <td align="left"> Improve BlockPlacementPolicyDefault’s picking of excess replicas </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Ming Ma </td> |
| <td align="left"> Xiao Chen </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6436">MAPREDUCE-6436</a> </td> |
| <td align="left"> JobHistory cache issue </td> |
| <td align="left"> Blocker </td> |
| <td align="left"> . </td> |
| <td align="left"> Ryu Kobayashi </td> |
| <td align="left"> Kai Sasaki </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9415">HDFS-9415</a> </td> |
| <td align="left"> Document dfs.cluster.administrators and dfs.permissions.superusergroup </td> |
| <td align="left"> Major </td> |
| <td align="left"> documentation </td> |
| <td align="left"> Arpit Agarwal </td> |
| <td align="left"> Xiaobing Zhou </td></tr> |
| </tbody> |
| </table></div> |
| <div class="section"> |
| <h3><a name="BUG_FIXES:"></a>BUG FIXES:</h3> |
| <table border="0" class="bodyTable"> |
| <thead> |
| |
| <tr class="a"> |
| <th align="left"> JIRA </th> |
| <th align="left"> Summary </th> |
| <th align="left"> Priority </th> |
| <th align="left"> Component </th> |
| <th align="left"> Reporter </th> |
| <th align="left"> Contributor </th></tr> |
| </thead><tbody> |
| |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-2975">YARN-2975</a> </td> |
| <td align="left"> FSLeafQueue app lists are accessed without required locks </td> |
| <td align="left"> Blocker </td> |
| <td align="left"> . </td> |
| <td align="left"> Karthik Kambatla </td> |
| <td align="left"> Karthik Kambatla </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-6945">HDFS-6945</a> </td> |
| <td align="left"> BlockManager should remove a block from excessReplicateMap and decrement ExcessBlocks metric when the block is removed </td> |
| <td align="left"> Critical </td> |
| <td align="left"> namenode </td> |
| <td align="left"> Akira Ajisaka </td> |
| <td align="left"> Akira Ajisaka </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-4660">HDFS-4660</a> </td> |
| <td align="left"> Block corruption can happen during pipeline recovery </td> |
| <td align="left"> Blocker </td> |
| <td align="left"> datanode </td> |
| <td align="left"> Peng Zhang </td> |
| <td align="left"> Kihwal Lee </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3842">YARN-3842</a> </td> |
| <td align="left"> NMProxy should retry on NMNotYetReadyException </td> |
| <td align="left"> Critical </td> |
| <td align="left"> . </td> |
| <td align="left"> Karthik Kambatla </td> |
| <td align="left"> Robert Kanter </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3695">YARN-3695</a> </td> |
| <td align="left"> ServerProxy (NMProxy, etc.) shouldn’t retry forever for non network exception. </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Junping Du </td> |
| <td align="left"> Raju Bairishetti </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12107">HADOOP-12107</a> </td> |
| <td align="left"> long running apps may have a huge number of StatisticsData instances under FileSystem </td> |
| <td align="left"> Critical </td> |
| <td align="left"> fs </td> |
| <td align="left"> Sangjin Lee </td> |
| <td align="left"> Sangjin Lee </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3849">YARN-3849</a> </td> |
| <td align="left"> Too much of preemption activity causing continuos killing of containers across queues </td> |
| <td align="left"> Critical </td> |
| <td align="left"> capacityscheduler </td> |
| <td align="left"> Sunil Govindan </td> |
| <td align="left"> Sunil Govindan </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-8767">HDFS-8767</a> </td> |
| <td align="left"> RawLocalFileSystem.listStatus() returns null for UNIX pipefile </td> |
| <td align="left"> Critical </td> |
| <td align="left"> . </td> |
| <td align="left"> Haohui Mai </td> |
| <td align="left"> Kanaka Kumar Avvaru </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3535">YARN-3535</a> </td> |
| <td align="left"> Scheduler must re-request container resources when RMContainer transitions from ALLOCATED to KILLED </td> |
| <td align="left"> Critical </td> |
| <td align="left"> capacityscheduler, fairscheduler, resourcemanager </td> |
| <td align="left"> Peng Zhang </td> |
| <td align="left"> Peng Zhang </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3857">YARN-3857</a> </td> |
| <td align="left"> Memory leak in ResourceManager with SIMPLE mode </td> |
| <td align="left"> Critical </td> |
| <td align="left"> resourcemanager </td> |
| <td align="left"> mujunchao </td> |
| <td align="left"> mujunchao </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-5982">MAPREDUCE-5982</a> </td> |
| <td align="left"> Task attempts that fail from the ASSIGNED state can disappear </td> |
| <td align="left"> Major </td> |
| <td align="left"> mr-am </td> |
| <td align="left"> Jason Lowe </td> |
| <td align="left"> Chang Li </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3697">YARN-3697</a> </td> |
| <td align="left"> FairScheduler: ContinuousSchedulingThread can fail to shutdown </td> |
| <td align="left"> Critical </td> |
| <td align="left"> fairscheduler </td> |
| <td align="left"> zhihai xu </td> |
| <td align="left"> zhihai xu </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6492">MAPREDUCE-6492</a> </td> |
| <td align="left"> AsyncDispatcher exit with NPE on TaskAttemptImpl#sendJHStartEventForAssignedFailTask </td> |
| <td align="left"> Critical </td> |
| <td align="left"> . </td> |
| <td align="left"> Bibin A Chundatt </td> |
| <td align="left"> Bibin A Chundatt </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4180">YARN-4180</a> </td> |
| <td align="left"> AMLauncher does not retry on failures when talking to NM </td> |
| <td align="left"> Critical </td> |
| <td align="left"> resourcemanager </td> |
| <td align="left"> Anubhav Dhoot </td> |
| <td align="left"> Anubhav Dhoot </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9178">HDFS-9178</a> </td> |
| <td align="left"> Slow datanode I/O can cause a wrong node to be marked bad </td> |
| <td align="left"> Critical </td> |
| <td align="left"> . </td> |
| <td align="left"> Kihwal Lee </td> |
| <td align="left"> Kihwal Lee </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9220">HDFS-9220</a> </td> |
| <td align="left"> Reading small file (< 512 bytes) that is open for append fails due to incorrect checksum </td> |
| <td align="left"> Blocker </td> |
| <td align="left"> . </td> |
| <td align="left"> Bogdan Raducanu </td> |
| <td align="left"> Jing Zhao </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9313">HDFS-9313</a> </td> |
| <td align="left"> Possible NullPointerException in BlockManager if no excess replica can be chosen </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Ming Ma </td> |
| <td align="left"> Ming Ma </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4354">YARN-4354</a> </td> |
| <td align="left"> Public resource localization fails with NPE </td> |
| <td align="left"> Blocker </td> |
| <td align="left"> nodemanager </td> |
| <td align="left"> Jason Lowe </td> |
| <td align="left"> Jason Lowe </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4380">YARN-4380</a> </td> |
| <td align="left"> TestResourceLocalizationService.testDownloadingResourcesOnContainerKill fails intermittently </td> |
| <td align="left"> Major </td> |
| <td align="left"> test </td> |
| <td align="left"> Tsuyoshi Ozawa </td> |
| <td align="left"> Varun Saxena </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9294">HDFS-9294</a> </td> |
| <td align="left"> DFSClient deadlock when close file and failed to renew lease </td> |
| <td align="left"> Blocker </td> |
| <td align="left"> hdfs-client </td> |
| <td align="left"> DENG FEI </td> |
| <td align="left"> Brahma Reddy Battula </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4452">YARN-4452</a> </td> |
| <td align="left"> NPE when submit Unmanaged application </td> |
| <td align="left"> Critical </td> |
| <td align="left"> . </td> |
| <td align="left"> Naganarasimha G R </td> |
| <td align="left"> Naganarasimha G R </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9445">HDFS-9445</a> </td> |
| <td align="left"> Datanode may deadlock while handling a bad volume </td> |
| <td align="left"> Blocker </td> |
| <td align="left"> . </td> |
| <td align="left"> Kihwal Lee </td> |
| <td align="left"> Walter Su </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6577">MAPREDUCE-6577</a> </td> |
| <td align="left"> MR AM unable to load native library without MR_AM_ADMIN_USER_ENV set </td> |
| <td align="left"> Critical </td> |
| <td align="left"> mr-am </td> |
| <td align="left"> Sangjin Lee </td> |
| <td align="left"> Sangjin Lee </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4546">YARN-4546</a> </td> |
| <td align="left"> ResourceManager crash due to scheduling opportunity overflow </td> |
| <td align="left"> Critical </td> |
| <td align="left"> resourcemanager </td> |
| <td align="left"> Jason Lowe </td> |
| <td align="left"> Jason Lowe </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9600">HDFS-9600</a> </td> |
| <td align="left"> do not check replication if the block is under construction </td> |
| <td align="left"> Critical </td> |
| <td align="left"> . </td> |
| <td align="left"> Phil Yang </td> |
| <td align="left"> Phil Yang </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HDFS-9574">HDFS-9574</a> </td> |
| <td align="left"> Reduce client failures during datanode restart </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Kihwal Lee </td> |
| <td align="left"> Kihwal Lee </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4414">YARN-4414</a> </td> |
| <td align="left"> Nodemanager connection errors are retried at multiple levels </td> |
| <td align="left"> Major </td> |
| <td align="left"> nodemanager </td> |
| <td align="left"> Jason Lowe </td> |
| <td align="left"> Chang Li </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12706">HADOOP-12706</a> </td> |
| <td align="left"> TestLocalFsFCStatistics#testStatisticsThreadLocalDataCleanUp times out occasionally </td> |
| <td align="left"> Major </td> |
| <td align="left"> test </td> |
| <td align="left"> Jason Lowe </td> |
| <td align="left"> Sangjin Lee </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4581">YARN-4581</a> </td> |
| <td align="left"> AHS writer thread leak makes RM crash while RM is recovering </td> |
| <td align="left"> Major </td> |
| <td align="left"> resourcemanager </td> |
| <td align="left"> sandflee </td> |
| <td align="left"> sandflee </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6554">MAPREDUCE-6554</a> </td> |
| <td align="left"> MRAppMaster servicestart failing with NPE in MRAppMaster#parsePreviousJobHistory </td> |
| <td align="left"> Critical </td> |
| <td align="left"> . </td> |
| <td align="left"> Bibin A Chundatt </td> |
| <td align="left"> Bibin A Chundatt </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-4598">YARN-4598</a> </td> |
| <td align="left"> Invalid event: RESOURCE_FAILED at CONTAINER_CLEANEDUP_AFTER_KILL </td> |
| <td align="left"> Major </td> |
| <td align="left"> nodemanager </td> |
| <td align="left"> tangshangwen </td> |
| <td align="left"> tangshangwen </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6619">MAPREDUCE-6619</a> </td> |
| <td align="left"> HADOOP_CLASSPATH is overwritten in MR container </td> |
| <td align="left"> Major </td> |
| <td align="left"> mrv2 </td> |
| <td align="left"> shanyu zhao </td> |
| <td align="left"> Junping Du </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6618">MAPREDUCE-6618</a> </td> |
| <td align="left"> YarnClientProtocolProvider leaking the YarnClient thread. </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Xuan Gong </td> |
| <td align="left"> Xuan Gong </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6621">MAPREDUCE-6621</a> </td> |
| <td align="left"> Memory Leak in JobClient#submitJobInternal() </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Xuan Gong </td> |
| <td align="left"> Xuan Gong </td></tr> |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/MAPREDUCE-6363">MAPREDUCE-6363</a> </td> |
| <td align="left"> [NNBench] Lease mismatch error when running with multiple mappers </td> |
| <td align="left"> Critical </td> |
| <td align="left"> benchmarks </td> |
| <td align="left"> Brahma Reddy Battula </td> |
| <td align="left"> Bibin A Chundatt </td></tr> |
| </tbody> |
| </table></div> |
| <div class="section"> |
| <h3><a name="TESTS:"></a>TESTS:</h3> |
| <table border="0" class="bodyTable"> |
| <thead> |
| |
| <tr class="a"> |
| <th align="left"> JIRA </th> |
| <th align="left"> Summary </th> |
| <th align="left"> Priority </th> |
| <th align="left"> Component </th> |
| <th align="left"> Reporter </th> |
| <th align="left"> Contributor </th></tr> |
| </thead><tbody> |
| |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/HADOOP-12736">HADOOP-12736</a> </td> |
| <td align="left"> TestTimedOutTestsListener#testThreadDumpAndDeadlocks sometimes times out </td> |
| <td align="left"> Major </td> |
| <td align="left"> . </td> |
| <td align="left"> Xiao Chen </td> |
| <td align="left"> Xiao Chen </td></tr> |
| </tbody> |
| </table></div> |
| <div class="section"> |
| <h3><a name="SUB-TASKS:"></a>SUB-TASKS:</h3> |
| <table border="0" class="bodyTable"> |
| <thead> |
| |
| <tr class="a"> |
| <th align="left"> JIRA </th> |
| <th align="left"> Summary </th> |
| <th align="left"> Priority </th> |
| <th align="left"> Component </th> |
| <th align="left"> Reporter </th> |
| <th align="left"> Contributor </th></tr> |
| </thead><tbody> |
| |
| <tr class="b"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-3893">YARN-3893</a> </td> |
| <td align="left"> Both RM in active state when Admin#transitionToActive failure from refeshAll() </td> |
| <td align="left"> Critical </td> |
| <td align="left"> resourcemanager </td> |
| <td align="left"> Bibin A Chundatt </td> |
| <td align="left"> Bibin A Chundatt </td></tr> |
| <tr class="a"> |
| <td align="left"> <a class="externalLink" href="https://issues.apache.org/jira/browse/YARN-2902">YARN-2902</a> </td> |
| <td align="left"> Killing a container that is localizing can orphan resources in the DOWNLOADING state </td> |
| <td align="left"> Major </td> |
| <td align="left"> nodemanager </td> |
| <td align="left"> Jason Lowe </td> |
| <td align="left"> Varun Saxena </td></tr> |
| </tbody> |
| </table></div></div> |
| </div> |
| </div> |
| <div class="clear"> |
| <hr/> |
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