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From "zhangduo (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-13097) Netty PooledByteBufAllocator cause OOM in some unit test
Date Wed, 25 Feb 2015 03:33:04 GMT
zhangduo created HBASE-13097:

             Summary: Netty PooledByteBufAllocator cause OOM in some unit test
                 Key: HBASE-13097
                 URL: https://issues.apache.org/jira/browse/HBASE-13097
             Project: HBase
          Issue Type: Bug
          Components: IPC/RPC, test
    Affects Versions: 2.0.0, 1.1.0
            Reporter: zhangduo

In some unit tests(such as TestAcidGuarantees) we create multiple Connection instance. If
we use AsyncRpcClient, then there will be multiple netty Bootstrap and every Bootstrap has
its own PooledByteBufAllocator.
Its default max cached buffer size is 32M, so it is easy to OOM if we create many Connection
See https://builds.apache.org/job/HBase-TRUNK/6168/artifact/hbase-server/target/surefire-reports/org.apache.hadoop.hbase.TestAcidGuarantees-output.txt

2015-02-24 23:50:29,704 WARN  [JvmPauseMonitor] util.JvmPauseMonitor$Monitor(167): Detected
pause in JVM or host machine (eg GC): pause of approximately 20133ms
GC pool 'PS MarkSweep' had collection(s): count=15 time=55525ms

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