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From "Yiqun Lin (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (HDFS-13198) RBF: RouterHeartbeatService throws out CachedStateStore related exceptions when starting router
Date Tue, 27 Feb 2018 03:33:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-13198?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yiqun Lin reassigned HDFS-13198:
--------------------------------

    Assignee: Yiqun Lin  (was: Wei Yan)

> RBF: RouterHeartbeatService throws out CachedStateStore related exceptions when starting
router
> -----------------------------------------------------------------------------------------------
>
>                 Key: HDFS-13198
>                 URL: https://issues.apache.org/jira/browse/HDFS-13198
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>            Reporter: Wei Yan
>            Assignee: Yiqun Lin
>            Priority: Minor
>
> Exception looks like:
> {code:java}
> 2018-02-23 19:04:56,341 ERROR router.RouterHeartbeatService: Cannot get version for class
org.apache.hadoop.hdfs.server.federation.store.MembershipStore: Cached State Store not initialized,
MembershipState records not valid
> 2018-02-23 19:04:56,341 ERROR router.RouterHeartbeatService: Cannot get version for class
org.apache.hadoop.hdfs.server.federation.store.MountTableStore: Cached State Store not initialized,
MountTable records not valid
> Exception in thread "Router Heartbeat Async" java.lang.NullPointerException
> at org.apache.hadoop.hdfs.server.federation.store.driver.impl.StateStoreSerializableImpl.serialize(StateStoreSerializableImpl.java:60)
> at org.apache.hadoop.hdfs.server.federation.store.driver.impl.StateStoreZooKeeperImpl.putAll(StateStoreZooKeeperImpl.java:191)
> at org.apache.hadoop.hdfs.server.federation.store.driver.impl.StateStoreBaseImpl.put(StateStoreBaseImpl.java:75)
> at org.apache.hadoop.hdfs.server.federation.store.impl.RouterStoreImpl.routerHeartbeat(RouterStoreImpl.java:88)
> at org.apache.hadoop.hdfs.server.federation.router.RouterHeartbeatService.updateStateStore(RouterHeartbeatService.java:95)
> at org.apache.hadoop.hdfs.server.federation.router.RouterHeartbeatService.access$000(RouterHeartbeatService.java:43)
> at org.apache.hadoop.hdfs.server.federation.router.RouterHeartbeatService$1.run(RouterHeartbeatService.java:68)
> at java.lang.Thread.run(Thread.java:748){code}
> This is because, during starting the Router, the CachedStateStore hasn't been initialized
and cannot serve requests. Although the router will still be started, it would be better to
fix the exceptions.



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