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  1. Ignite
  2. IGNITE-15398

NioEventLoopGroup threads leakage

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Details

    • Bug
    • Status: Resolved
    • Blocker
    • Resolution: Fixed
    • None
    • 3.0.0-alpha3
    • None
    • Docs Required, Release Notes Required

    Description

      I've run a simple test and face OOM on 7 of 100 iterations.
      Seems, thread leakage is a reason.

      Use JVM arg `-Xmx512M` to run the test, otherwise more iterations may be required.

       @RepeatedTest(100)
          public void nodeRestart100Test() throws Exception {
              List<Ignite> grid = startGrid();
      
              IgniteUtils.closeAll(Lists.reverse(grid));
          }
      

      Thread dump shows a huge number of parked NioEventLoopGroup and JRaft-Request-Processor.
      Further investigation shows most of NioEventLoopGroup threads are acceptor threads created in startEndpoint() method of RestModule and ClientModule classes.

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        1. screenshot-2.png
          66 kB
          Mirza Aliev
        2. screenshot-1.png
          106 kB
          Mirza Aliev

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              maliev Mirza Aliev
              amashenkov Andrey Mashenkov
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