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  1. Cassandra
  2. CASSANDRA-15214

OOMs caught and not rethrown

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    Details

    • Bug Category:
      Availability - Process Crash
    • Severity:
      Normal
    • Complexity:
      Low Hanging Fruit
    • Discovered By:
      Code Inspection
    • Platform:
      All
    • Impacts:
      None

      Description

      Netty (at least, and perhaps elsewhere in Executors) catches all exceptions, so presently there is no way to ensure that an OOM reaches the JVM handler to trigger a crash/heapdump.

      It may be that the simplest most consistent way to do this would be to have a single thread spawned at startup that waits for any exceptions we must propagate to the Runtime.

      We could probably submit a patch upstream to Netty, but for a guaranteed future proof approach, it may be worth paying the cost of a single thread.

        Attachments

        1. oom-experiments.zip
          59 kB
          Yifan Cai

          Activity

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            • Assignee:
              Unassigned
              Reporter:
              benedict Benedict Elliott Smith
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              Dates

              • Created:
                Updated: