[jira] [Created] (IGNITE-15398) NioEventLoopGroup threads leakage.

["Andrey Mashenkov (Jira)" <ji...@apache.org>]

Andrey Mashenkov created IGNITE-15398:
-----------------------------------------

             Summary: NioEventLoopGroup threads leakage.
                 Key: IGNITE-15398
                 URL: https://issues.apache.org/jira/browse/IGNITE-15398
             Project: Ignite
          Issue Type: Bug
            Reporter: Andrey Mashenkov


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.
{code:java}
 @RepeatedTest(100)
    public void nodeRestart100Test() throws Exception {
        List<Ignite> grid = startGrid();

        createTable(grid); // Just create a table. See AbstractSchemaChangeTest

        IgniteUtils.closeAll(Lists.reverse(grid));
    }
{code}

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.



--
This message was sent by Atlassian Jira
(v8.3.4#803005)