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Hudson commented on YARN-2816: ------------------------------ SUCCESS: Integrated in Hadoop-Hdfs-trunk #1934 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/1934/]) YARN-2816. NM fail to start with NPE during container recovery. Contributed by Zhihai Xu (jlowe: rev 49c38898b0be64fc686d039ed2fb2dea1378df02) * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/recovery/TestNMLeveldbStateStoreService.java * hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/recovery/NMLeveldbStateStoreService.java * hadoop-yarn-project/CHANGES.txt > NM fail to start with NPE during container recovery > --------------------------------------------------- > > Key: YARN-2816 > URL: https://issues.apache.org/jira/browse/YARN-2816 > Project: Hadoop YARN > Issue Type: Bug > Components: nodemanager > Affects Versions: 2.5.0 > Reporter: zhihai xu > Assignee: zhihai xu > Fix For: 2.7.0 > > Attachments: YARN-2816.000.patch, YARN-2816.001.patch, > YARN-2816.002.patch, leveldb_records.txt > > > NM fail to start with NPE during container recovery. > We saw the following crash happen: > 2014-10-30 22:22:37,211 INFO org.apache.hadoop.service.AbstractService: > Service > org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl > failed in state INITED; cause: java.lang.NullPointerException > java.lang.NullPointerException > at > org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recoverContainer(ContainerManagerImpl.java:289) > at > org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.recover(ContainerManagerImpl.java:252) > at > org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.serviceInit(ContainerManagerImpl.java:235) > at > org.apache.hadoop.service.AbstractService.init(AbstractService.java:163) > at > org.apache.hadoop.service.CompositeService.serviceInit(CompositeService.java:107) > at > org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:250) > at > org.apache.hadoop.service.AbstractService.init(AbstractService.java:163) > at > org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:445) > at > org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:492) > The reason is some DB files used in NMLeveldbStateStoreService are > accidentally deleted to save disk space at > /tmp/hadoop-yarn/yarn-nm-recovery/yarn-nm-state. This leaves some incomplete > container record which don't have CONTAINER_REQUEST_KEY_SUFFIX(startRequest) > entry in the DB. When container is recovered at > ContainerManagerImpl#recoverContainer, > The NullPointerException at the following code cause NM shutdown. > {code} > StartContainerRequest req = rcs.getStartRequest(); > ContainerLaunchContext launchContext = req.getContainerLaunchContext(); > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332)