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https://issues.apache.org/jira/browse/YARN-2873?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
zhihai xu resolved YARN-2873.
-----------------------------
Resolution: Not A Problem
> improve LevelDB error handling for missing files DBException to avoid NM
> start failure.
> ---------------------------------------------------------------------------------------
>
> Key: YARN-2873
> URL: https://issues.apache.org/jira/browse/YARN-2873
> Project: Hadoop YARN
> Issue Type: Improvement
> Components: nodemanager
> Affects Versions: 2.5.0
> Reporter: zhihai xu
> Assignee: zhihai xu
> Attachments: YARN-2873.000.patch, YARN-2873.001.patch
>
>
> improve LevelDB error handling for missing files DBException to avoid NM
> start failure.
> We saw the following three level DB exceptions, all these exceptions cause NM
> start failure.
> DBException 1 in ShuffleHandler
> {code}
> INFO org.apache.hadoop.service.AbstractService: Service
> org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl
> failed in state STARTED; cause:
> org.apache.hadoop.service.ServiceStateException:
> org.fusesource.leveldbjni.internal.NativeDB$DBException: Corruption: 1
> missing files; e.g.:
> /tmp/hadoop-yarn/yarn-nm-recovery/nm-aux-services/mapreduce_shuffle/mapreduce_shuffle_state/000005.sst
> org.apache.hadoop.service.ServiceStateException:
> org.fusesource.leveldbjni.internal.NativeDB$DBException: Corruption: 1
> missing files; e.g.:
> /tmp/hadoop-yarn/yarn-nm-recovery/nm-aux-services/mapreduce_shuffle/mapreduce_shuffle_state/000005.sst
> at
> org.apache.hadoop.service.ServiceStateException.convert(ServiceStateException.java:59)
> at
> org.apache.hadoop.service.AbstractService.start(AbstractService.java:204)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.AuxServices.serviceStart(AuxServices.java:159)
> at
> org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
> at
> org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:120)
> at
> org.apache.hadoop.yarn.server.nodemanager.containermanager.ContainerManagerImpl.serviceStart(ContainerManagerImpl.java:441)
> at
> org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
> at
> org.apache.hadoop.service.CompositeService.serviceStart(CompositeService.java:120)
> at
> org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceStart(NodeManager.java:261)
> at
> org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
> at
> org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartNodeManager(NodeManager.java:446)
> at
> org.apache.hadoop.yarn.server.nodemanager.NodeManager.main(NodeManager.java:492)
> Caused by: org.fusesource.leveldbjni.internal.NativeDB$DBException:
> Corruption: 1 missing files; e.g.:
> /tmp/hadoop-yarn/yarn-nm-recovery/nm-aux-services/mapreduce_shuffle/mapreduce_shuffle_state/000005.sst
> at
> org.fusesource.leveldbjni.internal.NativeDB.checkStatus(NativeDB.java:200)
> at org.fusesource.leveldbjni.internal.NativeDB.open(NativeDB.java:218)
> at org.fusesource.leveldbjni.JniDBFactory.open(JniDBFactory.java:168)
> at
> org.apache.hadoop.mapred.ShuffleHandler.startStore(ShuffleHandler.java:475)
> at
> org.apache.hadoop.mapred.ShuffleHandler.recoverState(ShuffleHandler.java:443)
> at
> org.apache.hadoop.mapred.ShuffleHandler.serviceStart(ShuffleHandler.java:379)
> at
> org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
> ... 10 more
> {code}
> DBException 2 in NMLeveldbStateStoreService:
> {code}
> Error starting NodeManager
> org.apache.hadoop.service.ServiceStateException:
> org.fusesource.leveldbjni.internal.NativeDB$DBException: Corruption: 1
> missing files; e.g.:
> /tmp/hadoop-yarn/yarn-nm-recovery/yarn-nm-state/000005.sst
> at
> org.apache.hadoop.service.ServiceStateException.convert(ServiceStateException.java:59)
>
> at org.apache.hadoop.service.AbstractService.init(AbstractService.java:172)
> at
> org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartRecoveryStore(NodeManager.java:152)
>
> at
> org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:190)
>
> 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)
>
> Caused by: org.fusesource.leveldbjni.internal.NativeDB$DBException:
> Corruption: 1 missing files; e.g.:
> /tmp/hadoop-yarn/yarn-nm-recovery/yarn-nm-state/000005.sst
> at org.fusesource.leveldbjni.internal.NativeDB.checkStatus(NativeDB.java:200)
> at org.fusesource.leveldbjni.internal.NativeDB.open(NativeDB.java:218)
> at org.fusesource.leveldbjni.JniDBFactory.open(JniDBFactory.java:168)
> at
> org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.initStorage(NMLeveldbStateStoreService.java:842)
>
> at
> org.apache.hadoop.yarn.server.nodemanager.recovery.NMStateStoreService.serviceInit(NMStateStoreService.java:195)
>
> at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
> {code}
> DBException 3 in NMLeveldbStateStoreService:
> {code}
> INFO org.apache.hadoop.service.AbstractService
> Service
> org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService
> failed in state INITED; cause:
> org.fusesource.leveldbjni.internal.NativeDB$DBException: IO error:
> /tmp/hadoop-yarn/yarn-nm-recovery/yarn-nm-state/MANIFEST-000004: No such file
> or directory
> org.fusesource.leveldbjni.internal.NativeDB$DBException: IO error:
> /tmp/hadoop-yarn/yarn-nm-recovery/yarn-nm-state/MANIFEST-000004: No such file
> or directory
> at
> org.fusesource.leveldbjni.internal.NativeDB.checkStatus(NativeDB.java:200)
> at org.fusesource.leveldbjni.internal.NativeDB.open(NativeDB.java:218)
> at org.fusesource.leveldbjni.JniDBFactory.open(JniDBFactory.java:168)
> at
> org.apache.hadoop.yarn.server.nodemanager.recovery.NMLeveldbStateStoreService.initStorage(NMLeveldbStateStoreService.java:842)
> at
> org.apache.hadoop.yarn.server.nodemanager.recovery.NMStateStoreService.serviceInit(NMStateStoreService.java:195)
> at
> org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
> at
> org.apache.hadoop.yarn.server.nodemanager.NodeManager.initAndStartRecoveryStore(NodeManager.java:152)
> at
> org.apache.hadoop.yarn.server.nodemanager.NodeManager.serviceInit(NodeManager.java:190)
> 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)
> {code}
> DBException 1 and 2 is due to Sorted table file 000005.sst being deleted
> accidentally.
> DBException 3 is due to MANIFEST being deleted accidentally.
> It would be better to handle these errors instead of NM failed to start with
> DBException.
> For these DBExceptions, if we delete the LevelDB text file CURRENT, NM will
> recover successfully from the DBException.
> CURRENT is a simple text file that contains the name of the latest MANIFEST
> file.
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