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From "Jason Harvey (JIRA)" <>
Subject [jira] [Created] (CASSANDRA-4387) Multiple RPC threads waiting on a single thread
Date Wed, 27 Jun 2012 23:33:42 GMT
Jason Harvey created CASSANDRA-4387:

             Summary: Multiple RPC threads waiting on a single thread
                 Key: CASSANDRA-4387
             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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