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https://issues.apache.org/jira/browse/SOLR-16154?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17532414#comment-17532414
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Michael Gibney commented on SOLR-16154:
---------------------------------------
This all helps enormously, thanks! The missing piece of the puzzle for me was
that "cluster shutdown" would order the ZkController (and ZkEventListener
executor) shutdown before ZK shutdown. Assuming that's the case (which makes
sense), then this is looking very good indeed!
{quote}
My statement about 60s was wrong - I didn't realize that ExecutorUtil
awaitTermination LOOPS in the case of things not being shutdown yet.
{quote}
Right, weird! Then iiuc the 60s timeout serves no purpose (other than to be
potentially misleading) ...
> ZKEventListenerThread leaks from tests
> --------------------------------------
>
> Key: SOLR-16154
> URL: https://issues.apache.org/jira/browse/SOLR-16154
> Project: Solr
> Issue Type: Test
> Reporter: Mike Drob
> Assignee: Mike Drob
> Priority: Major
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
> Seen repeatedly on Jenkins.
> {noformat}
> com.carrotsearch.randomizedtesting.ThreadLeakError: 1 thread leaked from
> SUITE scope at
> org.apache.solr.handler.designer.TestSchemaDesignerSettingsDAO:
> 1) Thread[id=1089, name=ZKEventListenerThread, state=TIMED_WAITING,
> group=TGRP-TestSchemaDesignerSettingsDAO]
> at java.base@18/java.lang.Thread.sleep(Native Method)
> at
> app//org.apache.solr.common.cloud.ZkCmdExecutor.retryDelay(ZkCmdExecutor.java:161)
> at
> app//org.apache.solr.common.cloud.ZkCmdExecutor.retryOperation(ZkCmdExecutor.java:82)
> at
> app//org.apache.solr.common.cloud.SolrZkClient.getData(SolrZkClient.java:361)
> at
> app//org.apache.solr.cloud.ZkSolrResourceLoader.openResource(ZkSolrResourceLoader.java:75)
> at
> app//org.apache.lucene.analysis.AbstractAnalysisFactory.getLines(AbstractAnalysisFactory.java:302)
> at
> app//org.apache.lucene.analysis.AbstractAnalysisFactory.getWordSet(AbstractAnalysisFactory.java:293)
> at
> app//org.apache.lucene.analysis.en.AbstractWordsFileFilterFactory.inform(AbstractWordsFileFilterFactory.java:88)
> at
> app//org.apache.solr.core.SolrResourceLoader.informAware(SolrResourceLoader.java:762)
> at
> app//org.apache.solr.schema.ManagedIndexSchema.informResourceLoaderAwareObjectsInChain(ManagedIndexSchema.java:1470)
> at
> app//org.apache.solr.schema.ManagedIndexSchema.informResourceLoaderAwareObjectsForFieldType(ManagedIndexSchema.java:1319)
> at
> app//org.apache.solr.schema.ManagedIndexSchema.postReadInform(ManagedIndexSchema.java:1307)
> at
> app//org.apache.solr.schema.IndexSchema.readSchema(IndexSchema.java:654)
> at
> app//org.apache.solr.schema.IndexSchema.<init>(IndexSchema.java:188)
> at
> app//org.apache.solr.schema.ManagedIndexSchema.<init>(ManagedIndexSchema.java:119)
> at
> app//org.apache.solr.schema.ManagedIndexSchemaFactory.create(ManagedIndexSchemaFactory.java:279)
> at
> app//org.apache.solr.schema.ManagedIndexSchemaFactory.create(ManagedIndexSchemaFactory.java:51)
> at
> app//org.apache.solr.core.ConfigSetService.createIndexSchema(ConfigSetService.java:342)
> at
> app//org.apache.solr.core.ConfigSetService.lambda$loadConfigSet$0(ConfigSetService.java:253)
> at
> app//org.apache.solr.core.ConfigSetService$$Lambda$632/0x0000000801137758.get(Unknown
> Source)
> at app//org.apache.solr.core.ConfigSet.<init>(ConfigSet.java:49)
> at
> app//org.apache.solr.core.ConfigSetService.loadConfigSet(ConfigSetService.java:249)
> at
> app//org.apache.solr.core.CoreContainer.reload(CoreContainer.java:1850)
> at
> app//org.apache.solr.core.SolrCore.lambda$getConfListener$21(SolrCore.java:3394)
> at
> app//org.apache.solr.core.SolrCore$$Lambda$742/0x00000008011f2560.run(Unknown
> Source)
> at
> app//org.apache.solr.cloud.ZkController.lambda$fireEventListeners$18(ZkController.java:2761)
> at
> app//org.apache.solr.cloud.ZkController$$Lambda$1153/0x00000008014e8938.run(Unknown
> Source)
> at java.base@18/java.lang.Thread.run(Thread.java:833)
> at __randomizedtesting.SeedInfo.seed([DE9B93CA6D75B373]:0)
> {noformat}
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