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https://issues.apache.org/jira/browse/SOLR-11911?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16401358#comment-16401358
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Hoss Man commented on SOLR-11911:
---------------------------------
bq. SOLR-11911: Wait a while for left-behind threads from executors.
Increasing the wait time just kicks the can down the road -- the real questions
are:
# why these executor tasks aren't aborting quickly
#* If the Callable instances being submitted to the executors can take a non
trivial amount of time, then they should be checking the shutdown status of the
executor frequently
# why the threads are being reported as leaks, instead of the test timing out
when shutting down the nodes
#* MiniSolrCcoudCluster.shutdown() calls shutdown on each of the jetty
instances in independent threads so they can be shutdown in parallel, but it
still waits for all the jetties to finish their shutdown before it let's the
test finish -- and if the lifecycle of the executor is beingmanaged correctly,
souldn't the shutdown of the Solr node block until these autoscaling executors
finish their shutdown?
#* so even if one of these executor tasks was effectively blocked forever,
shouldn't that be causing the test to timeout, not report a leaked thread?
> TestLargeCluster.testSearchRate() failure
> -----------------------------------------
>
> Key: SOLR-11911
> URL: https://issues.apache.org/jira/browse/SOLR-11911
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Steve Rowe
> Assignee: Andrzej Bialecki
> Priority: Major
>
> My Jenkins found a branch_7x seed that reproduced 4/5 times for me:
> {noformat}
> Checking out Revision af9706cb89335a5aa04f9bcae0c2558a61803b50
> (refs/remotes/origin/branch_7x)
> [...]
> [junit4] 2> NOTE: reproduce with: ant test -Dtestcase=TestLargeCluster
> -Dtests.method=testSearchRate -Dtests.seed=2D7724685882A83D -Dtests.slow=true
> -Dtests.locale=be-BY -Dtests.timezone=Africa/Ouagadougou -Dtests.asserts=true
> -Dtests.file.encoding=UTF-8
> [junit4] FAILURE 1.24s J0 | TestLargeCluster.testSearchRate <<<
> [junit4] > Throwable #1: java.lang.AssertionError: The trigger did not
> fire at all
> [junit4] > at
> __randomizedtesting.SeedInfo.seed([2D7724685882A83D:703F3AE197440E72]:0)
> [junit4] > at
> org.apache.solr.cloud.autoscaling.sim.TestLargeCluster.testSearchRate(TestLargeCluster.java:547)
> [junit4] > at java.lang.Thread.run(Thread.java:748)
> [...]
> [junit4] 2> NOTE: test params are: codec=CheapBastard,
> sim=RandomSimilarity(queryNorm=true): {}, locale=be-BY,
> timezone=Africa/Ouagadougou
> [junit4] 2> NOTE: Linux 4.1.0-custom2-amd64 amd64/Oracle Corporation
> 1.8.0_151 (64-bit)/cpus=16,threads=1,free=388243840,total=502267904
> {noformat}
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