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Hudson commented on YARN-1032: ------------------------------ SUCCESS: Integrated in Hadoop-trunk-Commit #4548 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/4548/]) YARN-1032. Fixed NPE in RackResolver. Contributed by Lohit Vijayarenu. (acmurthy: http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1529534) * /hadoop/common/trunk/hadoop-yarn-project/CHANGES.txt * /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/RackResolver.java * /hadoop/common/trunk/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/test/java/org/apache/hadoop/yarn/util/TestRackResolver.java > NPE in RackResolve > ------------------ > > Key: YARN-1032 > URL: https://issues.apache.org/jira/browse/YARN-1032 > Project: Hadoop YARN > Issue Type: Bug > Affects Versions: 2.0.5-alpha > Environment: linux > Reporter: Lohit Vijayarenu > Assignee: Lohit Vijayarenu > Priority: Critical > Fix For: 2.1.2-beta > > Attachments: YARN-1032.1.patch, YARN-1032.2.patch, YARN-1032.3.patch > > > We found a case where our rack resolve script was not returning rack due to > problem with resolving host address. This exception was see in > RackResolver.java as NPE, ultimately caught in RMContainerAllocator. > {noformat} > 2013-08-01 07:11:37,708 ERROR [RMCommunicator Allocator] > org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator: ERROR IN > CONTACTING RM. > java.lang.NullPointerException > at > org.apache.hadoop.yarn.util.RackResolver.coreResolve(RackResolver.java:99) > at > org.apache.hadoop.yarn.util.RackResolver.resolve(RackResolver.java:92) > at > org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator$ScheduledRequests.assignMapsWithLocality(RMContainerAllocator.java:1039) > at > org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator$ScheduledRequests.assignContainers(RMContainerAllocator.java:925) > at > org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator$ScheduledRequests.assign(RMContainerAllocator.java:861) > at > org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator$ScheduledRequests.access$400(RMContainerAllocator.java:681) > at > org.apache.hadoop.mapreduce.v2.app.rm.RMContainerAllocator.heartbeat(RMContainerAllocator.java:219) > at > org.apache.hadoop.mapreduce.v2.app.rm.RMCommunicator$1.run(RMCommunicator.java:243) > at java.lang.Thread.run(Thread.java:722) > {noformat} -- This message was sent by Atlassian JIRA (v6.1#6144)