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Posted to commits@cassandra.apache.org by "Jon Meredith (JIRA)" <ji...@apache.org> on 2019/06/18 19:39:00 UTC
[jira] [Assigned] (CASSANDRA-15170) Reduce the time needed to
release in-JVM dtest cluster resources after close
[ https://issues.apache.org/jira/browse/CASSANDRA-15170?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jon Meredith reassigned CASSANDRA-15170:
----------------------------------------
Assignee: Jon Meredith
> Reduce the time needed to release in-JVM dtest cluster resources after close
> ----------------------------------------------------------------------------
>
> Key: CASSANDRA-15170
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15170
> Project: Cassandra
> Issue Type: Improvement
> Components: Test/dtest
> Reporter: Jon Meredith
> Assignee: Jon Meredith
> Priority: Normal
>
> There are a few issues that slow the in-JVM dtests from reclaiming metaspace once the cluster is closed.
> IsolatedExecutor issues the shutdown on a SingleExecutorThreadPool, sometimes this thread was still running 10s after the dtest cluster was closed. Instead, switch to a ThreadPoolExecutor with a core pool size of 0 so that the thread executing the class loader close executes sooner.
> If an OutboundTcpConnection is waiting to connect() and the endpoint is not answering, it has to wait for a timeout before it exits. Instead it should check the isShutdown flag and terminate early if shutdown has been requested.
> In 3.0 and above, HintsCatalog.load uses java.nio.Files.list outside of a try-with-resources construct and leaks a file handle for the directory. This doesn't matter for normal usage, it leaks a file handle for each dtest Instance created.
> On trunk, Netty global event executor threads are still running and delay GC for the instance class loader.
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