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  1. Apache Storm
  2. STORM-112

Race condition between Topology Kill and Worker Timeout can crash supervisor

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    Details

    • Type: Bug
    • Status: Open
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: storm-core
    • Labels:
      None

      Description

      Recently during testing on a single node cluster we saw a supervisor crash when a topology was killed. The supervisor came back up and recovered, so it was not that big of a deal, but when we dug into it, it appears that there is a race.
      https://github.com/nathanmarz/storm/issues/656

      When a topology is killed the local assignments are reset, and then stormconf.ser is deleted right away. But at the same time sync-process may already be running with old state indicating that a worker timed out and needs to be relaunched. launch-worker then tries to read in the topology conf which was deleted and crashes.

      The following is a sanitized version of the supervisor log that shows this happening.
      https://gist.github.com/revans2/6282830

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            • Assignee:
              Unassigned
              Reporter:
              xumingming James Xu
            • Votes:
              2 Vote for this issue
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              6 Start watching this issue

              Dates

              • Created:
                Updated: