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From "Duo Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-16165) Decrease RpcServer.callQueueSize before writeResponse causes OOM
Date Fri, 01 Jul 2016 09:54:11 GMT
Duo Zhang created HBASE-16165:
---------------------------------

             Summary: Decrease RpcServer.callQueueSize before writeResponse causes OOM
                 Key: HBASE-16165
                 URL: https://issues.apache.org/jira/browse/HBASE-16165
             Project: HBase
          Issue Type: Bug
            Reporter: Duo Zhang


In RpcServer, we use {{callQueueSizeInBytes}} to avoid queuing too many calls which causes
OOM. But in {{CallRunner.run}}, we decrease it before send the response back. And even after
calling {{sendResponseIfReady}}, the call object could stay in our heap for a long time if
we can not write out the response(That's why we need a Responder thread...). This makes it
possible that the actual size of all call object in heap is larger than {{maxQueueSizeInBytes}}
and causes OOM.



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