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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (CASSANDRA-5815) NPE from migration manager
Date Fri, 26 Jul 2013 22:17:48 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-5815?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Brandon Williams reassigned CASSANDRA-5815:
-------------------------------------------

    Assignee: Brandon Williams
    
> NPE from migration manager
> --------------------------
>
>                 Key: CASSANDRA-5815
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-5815
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 1.1.12
>            Reporter: Vishy Kasar
>            Assignee: Brandon Williams
>            Priority: Minor
>
> In one of our production clusters we see this error often. Looking through the source,
Gossiper.instance.getEndpointStateForEndpoint(endpoint) is returning null for some end point.
De we need any config change on our end to resolve this? In any case, cassandra should be
updated to protect against this NPE.
> ERROR [OptionalTasks:1] 2013-07-24 13:40:38,972 AbstractCassandraDaemon.java (line 132)
Exception in thread Thread[OptionalTasks:1,5,main] 
> java.lang.NullPointerException 
> at org.apache.cassandra.service.MigrationManager$1.run(MigrationManager.java:134) 
> at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441) 
> at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303) 
> at java.util.concurrent.FutureTask.run(FutureTask.java:138) 
> at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)

> at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:206)

> at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)

> at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) 
> at java.lang.Thread.run(Thread.java:662)
> It turned out that the reason for NPE was we bootstrapped a node with the same token
as another node. Cassandra should not throw an NPE here but log a meaningful error message.


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