Stefan Miklosovic created CASSANDRA-20119:
---------------------------------------------
Summary: Some benchmark tests leak LocalLog-related thread
Key: CASSANDRA-20119
URL: https://issues.apache.org/jira/browse/CASSANDRA-20119
Project: Apache Cassandra
Issue Type: Bug
Reporter: Stefan Miklosovic
I am running a benchmark, like CacheLoaderBench and there are these messages
when iteration is over
{code}
<JMH had finished, but forked VM did not exit, are there stray running threads?
Waiting 9 seconds more...>
Non-finished threads:
Thread[GlobalLogFollower,5,system]
at [email protected]/jdk.internal.misc.Unsafe.park(Native Method)
at
[email protected]/java.util.concurrent.locks.LockSupport.park(LockSupport.java:323)
at
app//org.apache.cassandra.utils.concurrent.WaitQueue$Standard$AbstractSignal.await(WaitQueue.java:290)
at
app//org.apache.cassandra.utils.concurrent.WaitQueue$Standard$AbstractSignal.await(WaitQueue.java:283)
at
app//org.apache.cassandra.tcm.log.LocalLog$Async$AsyncRunnable.run(LocalLog.java:816)
at
app//org.apache.cassandra.concurrent.InfiniteLoopExecutor.loop(InfiniteLoopExecutor.java:121)
at
app//org.apache.cassandra.concurrent.InfiniteLoopExecutor$$Lambda$233/0x0000000800393840.run(Unknown
Source)
at
app//io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at [email protected]/java.lang.Thread.run(Thread.java:829)
Thread[DestroyJavaVM,5,main]
{code}
I noticed this is its teardown
{code}
@TearDown(Level.Trial)
public void teardown()
{
CQLTester.tearDownClass();
CommitLog.instance.stopUnsafe(true);
CQLTester.cleanup();
}
{code}
when I do this it will be OK
{code}
@TearDown(Level.Trial)
public void teardown()
{
CQLTester.tearDownClass();
CommitLog.instance.stopUnsafe(true);
ClusterMetadataService.instance().log().close();
CQLTester.cleanup();
}
{code}
Worth to say that benchark _eventually_ finishes. It is not stuck, JMH just
waits and checks for 30 seconds and then it seem to "kill it".
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