Hoss Man created SOLR-5145:
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Summary: wait w/o notify situation happening on shutdown in
CoreContainer/CloserThread/SolrCores.modifyLock
Key: SOLR-5145
URL: https://issues.apache.org/jira/browse/SOLR-5145
Project: Solr
Issue Type: Bug
Reporter: Hoss Man
Working on SOLR-4952 i was running tests on the 4x branch and noticed
TestManagedSchema.testPersistUniqueKey stalled for 1623s -- but nothing baout
hte situation seems to be specific to that test.
I'll attache a threaddump, but the key things i note...
* TestHarness is trying to shutdown the CoreContainer
* CoreContainer.shutdown(CoreContainer.java:358) is waiting on
<0x00000000f690b880> (a org.apache.solr.core.CloserThread)
* CloserThread.run(CoreContainer.java:961) is waiting on <0x00000000e068d718>
(a java.lang.Object)
** that's aparently "SolrCores.modifyLock"
* a "searcherExecutor-46-thread-1" is still alive and parking to wait for
<0x00000000f66ff860> (a
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
* no other threads seem to be doing anything -- so as far as i can tell nothing
is ever going to notify on that modifyLock
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