[jira] [Created] (DRILL-785) org.apache.drill.exec.rpc.bit.ListenerPool leak suspects

["griffin li (JIRA)" <ji...@apache.org>]

griffin li created DRILL-785:
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             Summary: org.apache.drill.exec.rpc.bit.ListenerPool leak suspects
                 Key: DRILL-785
                 URL: https://issues.apache.org/jira/browse/DRILL-785
             Project: Apache Drill
          Issue Type: Bug
          Components: Execution - Flow
    Affects Versions: 1.0.0-milestone-1
            Reporter: griffin li
            Priority: Critical


the drillbit down for every 7 or 8 day. i print the gc details and find a lot of full gc before down. I dump the heap and analysis with mat and find the ListenerPool may have problem.
Below is the full message in mat leak suspects:
One instance of "org.apache.drill.exec.rpc.bit.ListenerPool" loaded by "sun.misc.Launcher$AppClassLoader @ 0x638052d50" occupies 3,484,931,208 (98.72%) bytes. The memory is accumulated in one instance of "java.util.concurrent.ConcurrentHashMap$Segment[]" loaded by "<system class loader>".

Keywords
java.util.concurrent.ConcurrentHashMap$Segment[]
org.apache.drill.exec.rpc.bit.ListenerPool 
sun.misc.Launcher$AppClassLoader @ 0x638052d50

Then i quick look at ListenerPool and does not find any place to remove object from the listeners. Does this is a problem？



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