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https://issues.apache.org/jira/browse/SOLR-6406?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14973270#comment-14973270
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Mark Miller commented on SOLR-6406:
-----------------------------------
Got a hang at the same spot - 2 threads stuck on it this time rather than the
usual 1:
{noformat}
[junit4] > 2) Thread[id=1071, name=qtp612828486-1071, state=WAITING,
group=TGRP-HdfsChaosMonkeyNothingIsSafeTest]
[junit4] > at java.lang.Object.wait(Native Method)
[junit4] > at java.lang.Object.wait(Object.java:502)
[junit4] > at
org.apache.solr.client.solrj.impl.ConcurrentUpdateSolrClient.blockUntilFinished(ConcurrentUpdateSolrClient.java:418)
[junit4] > at
org.apache.solr.update.StreamingSolrClients.blockUntilFinished(StreamingSolrClients.java:106)
[junit4] > at
org.apache.solr.update.SolrCmdDistributor.blockAndDoRetries(SolrCmdDistributor.java:231)
[junit4] > at
org.apache.solr.update.SolrCmdDistributor.finish(SolrCmdDistributor.java:89)
[junit4] > at
org.apache.solr.update.processor.DistributedUpdateProcessor.doFinish(DistributedUpdateProcessor.java:778)
[junit4] > at
org.apache.solr.update.processor.DistributedUpdateProcessor.finish(DistributedUpdateProcessor.java:1622)
[junit4] > at
org.apache.solr.update.processor.LogUpdateProcessor.finish(LogUpdateProcessorFactory.java:183)
[junit4] > at
org.apache.solr.handler.ContentStreamHandlerBase.handleRequestBody(ContentStreamHandlerBase.java:83)
[junit4] > at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:151)
[junit4] > at
org.apache.solr.core.SolrCore.execute(SolrCore.java:2079)
[junit4] > at
org.apache.solr.servlet.HttpSolrCall.execute(HttpSolrCall.java:667)
[junit4] > at
org.apache.solr.servlet.HttpSolrCall.call(HttpSolrCall.java:460)
[junit4] > at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:220)
[junit4] > at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:179)
{noformat}
> ConcurrentUpdateSolrServer hang in blockUntilFinished.
> ------------------------------------------------------
>
> Key: SOLR-6406
> URL: https://issues.apache.org/jira/browse/SOLR-6406
> Project: Solr
> Issue Type: Bug
> Reporter: Mark Miller
> Fix For: 5.0, Trunk
>
> Attachments: CPU Sampling.png, SOLR-6406.patch, SOLR-6406.patch
>
>
> Not sure what is causing this, but SOLR-6136 may have taken us a step back
> here. I see this problem occasionally pop up in ChaosMonkeyNothingIsSafeTest
> now - test fails because of a thread leak, thread leak is due to a
> ConcurrentUpdateSolrServer hang in blockUntilFinished. Only started popping
> up recently.
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