[jira] Assigned: (CASSANDRA-2072) Race condition during decommission

["Brandon Williams (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CASSANDRA-2072?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brandon Williams reassigned CASSANDRA-2072:
-------------------------------------------

    Assignee: Brandon Williams

> Race condition during decommission
> ----------------------------------
>
>                 Key: CASSANDRA-2072
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-2072
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.7.0
>            Reporter: Brandon Williams
>            Assignee: Brandon Williams
>            Priority: Minor
>
> Occasionally when decommissioning a node, there is a race condition that occurs where another node will never remove the token and thus propagate it again with a state of down.  With CASSANDRA-1900 we can solve this, but it shouldn't occur in the first place.
> Given nodes A, B, and C, if you decommission B it will stream to A and C.  When complete, B will decommission and receive this stacktrace:
> ERROR 00:02:40,282 Fatal exception in thread Thread[Thread-5,5,main]
> java.util.concurrent.RejectedExecutionException: ThreadPoolExecutor has shut down
>         at org.apache.cassandra.concurrent.DebuggableThreadPoolExecutor$1.rejectedExecution(DebuggableThreadPoolExecutor.java:62)
>         at java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:767)
>         at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:658)
>         at org.apache.cassandra.net.MessagingService.receive(MessagingService.java:387)
>         at org.apache.cassandra.net.IncomingTcpConnection.run(IncomingTcpConnection.java:91
> At this point A will show it is removing B's token, but C will not and instead its failure detector will report that B is dead, and nodetool ring on C shows B in a leaving/down state.  In another gossip round, C will propagate this state back to A.

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