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Posted to dev@lucene.apache.org by "Hoss Man (JIRA)" <ji...@apache.org> on 2019/07/25 17:29:00 UTC

[jira] [Resolved] (SOLR-13653) java (10 & 11) HashMap bug can trigger AssertionError when using SolrCaches

     [ https://issues.apache.org/jira/browse/SOLR-13653?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hoss Man resolved SOLR-13653.
-----------------------------
    Resolution: Information Provided
      Assignee: Hoss Man

> java (10 & 11) HashMap bug can trigger AssertionError when using SolrCaches
> ---------------------------------------------------------------------------
>
>                 Key: SOLR-13653
>                 URL: https://issues.apache.org/jira/browse/SOLR-13653
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Hoss Man
>            Assignee: Hoss Man
>            Priority: Major
>              Labels: Java10, java11
>
> we've seen some java11 jenkins builds that have failed due to an AssertionError being thrown by HashMap.put as used in LRUCache -- in at least one case these failures are semi-reproducible. (the occasional "success" is likely due to some unpredictibility in thread contention)
> Some cursory investigation suggests that JDK-8205399, first identified in java10, and fixed in java12-b26...
> https://bugs.openjdk.java.net/browse/JDK-8205399
> There does not appear to be anything we can do to mitigate this problem in Solr.  
> It's also not clear to me based on th comments in JDK-8205399 if the underlying problem can cause problems for end users running w/assertions disabled, or if it just results in sub-optimal performance



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