[jira] [Commented] (SOLR-18155) CollectionsAPISolrJTest seed reliably leaks unclosed ZkShardTerms

["Pierre Salagnac (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SOLR-18155?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18065106#comment-18065106 ] 

Pierre Salagnac commented on SOLR-18155:
----------------------------------------

My understanding is it happens when a replica wins the leader election and it tries to actually become the leader after the {{ZkController}} instance was shut down (call to {{preClose()}} already done or in-progress.

This is probably due to the `Thread.sleep(2500)` in the leader process.

{code:java}
      // wait a moment for any floating updates to finish
      Thread.sleep(2500);
{code}

A simple fix could be to abort the leadership process when parent {{ZkController}} was closed.

> CollectionsAPISolrJTest seed reliably leaks unclosed ZkShardTerms
> -----------------------------------------------------------------
>
>                 Key: SOLR-18155
>                 URL: https://issues.apache.org/jira/browse/SOLR-18155
>             Project: Solr
>          Issue Type: Task
>            Reporter: Chris M. Hostetter
>            Priority: Major
>
> The following seed reliably fails on {{main}} (as of {{684894af5f1591af1c49c2bb6fdfdd83a94a89b2}}) due to ObjectReleaseTracker's of ZkShardTerms...
> {noformat}
> ./gradlew :solr:solrj:test --tests "org.apache.solr.client.solrj.impl.CloudSolrClientCacheTest.testStaleStateRetryWaitsAfterSkipFailure" "-Ptests.jvmargs=-XX:TieredStopAtLevel=1 -XX:+UseParallelGC -XX:ActiveProcessorCount=1 -XX:ReservedCodeCacheSize=120m" -Ptests.seed=517946C27016E5DC -Ptests.useSecurityManager=true -Ptests.file.encoding=ISO-8859-1
> {noformat}



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