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https://issues.apache.org/jira/browse/SOLR-14442?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17109228#comment-17109228
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Mikhail Khludnev commented on SOLR-14442:
-----------------------------------------

ok. It seems I've got what's happened. Attempting to kill via http command 
actually removes the process from netstat output. So, it needs to capture and 
store PID before first attempt. 

> bin/solr to attempt jstack before killing hung Solr instance
> ------------------------------------------------------------
>
>                 Key: SOLR-14442
>                 URL: https://issues.apache.org/jira/browse/SOLR-14442
>             Project: Solr
>          Issue Type: Improvement
>            Reporter: Christine Poerschke
>            Assignee: Christine Poerschke
>            Priority: Minor
>         Attachments: SOLR-14442.patch, SOLR-14442.patch, screenshot-1.png
>
>
> If a Solr instance did not respond to the 'stop' command in a timely manner 
> then the {{bin/solr}} script will attempt to forcefully kill it: 
> [https://github.com/apache/lucene-solr/blob/releases/lucene-solr/8.5.1/solr/bin/solr#L859]
> Gathering of information (e.g. a jstack of the java process) before the kill 
> command may be helpful in determining why the instance did not stop as 
> expected.



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