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  1. Cassandra
  2. CASSANDRA-9604

Upon JVM OOM (Out Of Memory), print out a summary of heap histograms in addition to heap dump

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    • Improvement
    • Status: Resolved
    • Low
    • Resolution: Duplicate
    • None
    • Local/Config
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    Description

      It appears that jmap has an option to allow dumping heap histograms after a heap dump is generated (http://www.oracle.com/technetwork/java/javase/memleaks-137499.html#gbywi). This could be useful to provide a very quick overview of the biggest objects in heap without having to download the massive hprof file off the Cassandra nodes. We can potentially hook it up using this JVM option: -XX:OnOutOfMemoryError="<cmd args>; <cmd args>" in the cassandra-env.sh file.

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          duplicates

          Bug - A problem which impairs or prevents the functions of the product. CASSANDRA-9861 When forcibly exiting due to OOM, we should produce a heap dump

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          • Resolved

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              Unassigned Unassigned
              weideng Wei Deng
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                Updated:
                Resolved: