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Posted to hdfs-issues@hadoop.apache.org by "Íñigo Goiri (JIRA)" <ji...@apache.org> on 2018/02/27 03:46:00 UTC
[jira] [Commented] (HDFS-13198) RBF: RouterHeartbeatService throws
out CachedStateStore related exceptions when starting router
[ https://issues.apache.org/jira/browse/HDFS-13198?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16377980#comment-16377980 ]
Íñigo Goiri commented on HDFS-13198:
------------------------------------
So the problem is that {{serializer}} in {{StateStoreSerializableImpl}} is {{null}}.
This is working internally so it must be that (1) I forgot to open source something or that (2) there are some parameter that triggers this.
I'll try to deploy the full Hadoop 2.9 to see if I can reproduce and test fro #1.
> 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: Wei Yan
> 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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