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Posted to dev@lucene.apache.org by "Shawn Heisey (JIRA)" <ji...@apache.org> on 2015/03/27 15:28:52 UTC
[jira] [Commented] (SOLR-7319) Workaround the "Four Month Bug"
causing GC pause problems
[ https://issues.apache.org/jira/browse/SOLR-7319?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14383912#comment-14383912 ]
Shawn Heisey commented on SOLR-7319:
------------------------------------
The situation where the bug presents itself -- heavy writes via mmap -- is exactly what Solr (Lucene) does when indexing or merging.
> Workaround the "Four Month Bug" causing GC pause problems
> ---------------------------------------------------------
>
> Key: SOLR-7319
> URL: https://issues.apache.org/jira/browse/SOLR-7319
> Project: Solr
> Issue Type: Bug
> Components: scripts and tools
> Affects Versions: 5.0
> Reporter: Shawn Heisey
> Assignee: Shawn Heisey
> Fix For: 5.1
>
>
> A twitter engineer found a bug in the JVM that contributes to GC pause problems:
> http://www.evanjones.ca/jvm-mmap-pause.html
> We should implement the workaround and document the impact in CHANGES.txt.
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