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https://issues.apache.org/jira/browse/SOLR-7602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14562480#comment-14562480
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Anshum Gupta commented on SOLR-7602:
------------------------------------
[~noble.paul] you're correct.
There's a close in the SolrCore constructor, so that calls a close in case of
an exception and also rethrows the exception.
The coreContainer.create method also tries to close the same core in the catch
block, which causes this issue when an exception occurs while creating a new
SolrCore.
> Frequent MultiThreadedOCPTest failures on Jenkins
> -------------------------------------------------
>
> Key: SOLR-7602
> URL: https://issues.apache.org/jira/browse/SOLR-7602
> Project: Solr
> Issue Type: Bug
> Reporter: Anshum Gupta
>
> The number of failed MultiThreadedOCPTest runs on Jenkins has gone up
> drastically since Apr 30, 2015.
> {code}
> REGRESSION: org.apache.solr.cloud.MultiThreadedOCPTest.test
> Error Message:
> Captured an uncaught exception in thread: Thread[id=6313,
> name=parallelCoreAdminExecutor-1988-thread-15, state=RUNNABLE,
> group=TGRP-MultiThreadedOCPTest]
> Stack Trace:
> com.carrotsearch.randomizedtesting.UncaughtExceptionError: Captured an
> uncaught exception in thread: Thread[id=6313,
> name=parallelCoreAdminExecutor-1988-thread-15, state=RUNNABLE,
> group=TGRP-MultiThreadedOCPTest]
> at
> __randomizedtesting.SeedInfo.seed([1FD11A82D96D185B:97852558779175A3]:0)
> Caused by: java.lang.AssertionError: Too many closes on SolrCore
> at __randomizedtesting.SeedInfo.seed([1FD11A82D96D185B]:0)
> at org.apache.solr.core.SolrCore.close(SolrCore.java:1138)
> at org.apache.solr.common.util.IOUtils.closeQuietly(IOUtils.java:31)
> at org.apache.solr.core.CoreContainer.create(CoreContainer.java:535)
> at org.apache.solr.core.CoreContainer.create(CoreContainer.java:494)
> at
> org.apache.solr.handler.admin.CoreAdminHandler.handleCreateAction(CoreAdminHandler.java:598)
> at
> org.apache.solr.handler.admin.CoreAdminHandler.handleRequestInternal(CoreAdminHandler.java:212)
> at
> org.apache.solr.handler.admin.CoreAdminHandler$ParallelCoreAdminHandlerThread.run(CoreAdminHandler.java:1219)
> at
> org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor$1.run(ExecutorUtil.java:148)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
> at java.lang.Thread.run(Thread.java:745)
> {code}
> Last failure:
> Build: http://jenkins.thetaphi.de/job/Lucene-Solr-5.x-Linux/12665/
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