Details

    • Type: Bug
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.0.0, 1.2.0, 1.1.2, 1.0.5
    • Component/s: storm-core
    • Labels:
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      Description

      Profiling our topology I noticed that the DRPCSpout actually sleeps twice if it has nothing to do. This is due to a Utils.sleep(1) call at the end of nextTuple() while the SleepSpoutWaitStrategy performs the default sleep if a spout did not emit any tuple.

      This causes - in my understanding - unnecessary context switches, especially with a high number of parallelism.

      Attached the corresponding YourKit screenshot.

      1. drpc_idle_overhead.png
        177 kB
        Daniel Klessing

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          kabhwan Jungtaek Lim added a comment -

          Thanks Daniel Klessing, I merged into master, 1.x, 1.1.x, 1.0.x branches.

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          kabhwan Jungtaek Lim added a comment - Thanks Daniel Klessing , I merged into master, 1.x, 1.1.x, 1.0.x branches.

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            • Assignee:
              sakanaou Daniel Klessing
              Reporter:
              sakanaou Daniel Klessing
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