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https://issues.apache.org/jira/browse/SOLR-16463?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17620721#comment-17620721
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Ishan Chattopadhyaya commented on SOLR-16463:
---------------------------------------------

Sure, Jan. Feel free to hold up the release until this is fixed. This is 
serious.

> Serious crash on JDK17+ due to JIT on caffeinecache
> ---------------------------------------------------
>
>                 Key: SOLR-16463
>                 URL: https://issues.apache.org/jira/browse/SOLR-16463
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: Docker
>    Affects Versions: 9.0
>            Reporter: Jan Høydahl
>            Assignee: Jan Høydahl
>            Priority: Blocker
>             Fix For: 9.1
>
>          Time Spent: 3h
>  Remaining Estimate: 0h
>
> Solr 9+ under JDK 17+ may crash frequently, during JVM Hotspot optimization 
> of caffeine cache class.
> This is due to a JDK bug 
> ([https://bugs.openjdk.org/browse/JDK-8285835|https://bugs.openjdk.org/browse/JDK-8285835)]),
>  but may not be fixed soon in JDK17, so we should make a workaround to 
> protect our users. The bug is also reported in caffeine project 
> ([https://github.com/ben-manes/caffeine/issues/797]).
> So there are a few possible ways to avoid this
>  * Run Solr 9 on JDK 11
>  * Do not use caffeine cache, find some replacement
>  * Caffeine cache releases a new version that do not suffer the issue, and 
> solr uses that
>  * Instruct JDK to not optimize that class, using JDK option 
> {{-XX:CompileCommand=exclude,com.github.benmanes.caffeine.cache.BoundedLocalCache::put}}
> See users list for examples of this issue seen in the wild: 
> [https://lists.apache.org/thread/wg7qtkddd1t5h08okj7gm9qbrpdf0ox6] 
> Docker users can set SOLR_OPTS with the JDK option above. Patching the 
> official Dockerfile to include this may be the least intrusive fix 
> short-term. We should also document the issue on website and perhaps docker 
> hub to provide users with a workaround.
> For 9.1 we can hardcode the JDK flag in bin/solr.



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