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From "Jonathan Ellis (JIRA)" <>
Subject [jira] [Resolved] (CASSANDRA-4387) Multiple RPC threads waiting on a single thread
Date Fri, 20 Sep 2013 22:22:54 GMT


Jonathan Ellis resolved CASSANDRA-4387.

    Resolution: Cannot Reproduce
> Multiple RPC threads waiting on a single thread
> -----------------------------------------------
>                 Key: CASSANDRA-4387
>                 URL:
>             Project: Cassandra
>          Issue Type: Bug
>    Affects Versions: 1.0.7
>         Environment: sun java 6.24
>            Reporter: Jason Harvey
>            Priority: Minor
>         Attachments: output.log
> I'm investigating a load spike issue on our cluster. A thread dump that I collected during
a spike shows a peculiar symptom. There are 162 RPC threads all parked waiting on a single
java.util.concurrent.SynchronousQueue$TransferStack thread. Brandon took a peek and recommended
I create a ticket for investigation.
> Full thread dump attached. The thread which is being waited on is 0x00000006ac1aba60.

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