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Posted to dev@drill.apache.org by "Sudheesh Katkam (JIRA)" <ji...@apache.org> on 2016/08/09 20:14:20 UTC

[jira] [Resolved] (DRILL-4836) ZK Issue during Drillbit startup, possibly due to race condition

     [ https://issues.apache.org/jira/browse/DRILL-4836?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sudheesh Katkam resolved DRILL-4836.
------------------------------------
    Resolution: Fixed

Fixed in [0a4c21c|https://github.com/apache/drill/commit/0a4c21cc15329c063f256f6fbf2c4c69a90d9fa1].

> ZK Issue during Drillbit startup, possibly due to race condition
> ----------------------------------------------------------------
>
>                 Key: DRILL-4836
>                 URL: https://issues.apache.org/jira/browse/DRILL-4836
>             Project: Apache Drill
>          Issue Type: Bug
>          Components:  Server
>            Reporter: Abhishek Girish
>            Assignee: Paul Rogers
>             Fix For: 1.8.0
>
>
> During a parallel launch of Drillbits on a 4 node cluster, I hit this issue during startup:
> {code}
> Exception in thread "main" org.apache.drill.exec.exception.DrillbitStartupException: Failure during initial startup of Drillbit.
>         at org.apache.drill.exec.server.Drillbit.start(Drillbit.java:284)
>         at org.apache.drill.exec.server.Drillbit.start(Drillbit.java:261)
>         at org.apache.drill.exec.server.Drillbit.main(Drillbit.java:257)
> Caused by: org.apache.drill.common.exceptions.DrillRuntimeException: unable to put
>         at org.apache.drill.exec.coord.zk.ZookeeperClient.put(ZookeeperClient.java:196)
>         at org.apache.drill.exec.store.sys.store.ZookeeperPersistentStore.putIfAbsent(ZookeeperPersistentStore.java:94)
>         ...
>         at org.apache.drill.exec.server.Drillbit.run(Drillbit.java:113)
>         at org.apache.drill.exec.server.Drillbit.start(Drillbit.java:281)
>         ... 2 more
> Caused by: org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode = NodeExists for /drill/sys.storage_plugins/dfs
>         at org.apache.drill.exec.coord.zk.ZookeeperClient.put(ZookeeperClient.java:191)
>         ... 7 more
> {code}
> And similarly,
> {code}
> Caused by: org.apache.zookeeper.KeeperException$NodeExistsException: KeeperErrorCode = NodeExists for /drill/sys.storage_plugins/kudu
> {code}



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