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https://issues.apache.org/jira/browse/SOLR-12874?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16651261#comment-16651261
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Uwe Schindler commented on SOLR-12874:
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This seems to be a bug in Java 11 (maybe they changed the spec for good?). Can
we verify what happens in Java 10 and 9? If the change is wanted and Java 9/10
cannot handle "20M", we need another inner if/then/else.
Important: The PR does not handle Windows, please keept that in sync, as this
also affects solr.cmd.
> Java 9+ GC Log files are being rotated every 20KB instead of every 20MB
> -----------------------------------------------------------------------
>
> Key: SOLR-12874
> URL: https://issues.apache.org/jira/browse/SOLR-12874
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Affects Versions: 7.5
> Reporter: Tim Underwood
> Priority: Major
> Time Spent: 10m
> Remaining Estimate: 0h
>
> The Java 9+ GC logging options in bin/solr and bin/solr.cmd specify a log
> rotation file size of 20000 which according to JEP 158
> ([https://openjdk.java.net/jeps/158]) should be the "file size in kb" however
> when running Solr on Java 11 I'm seeing GC logs rotated every 20KB.
> Changing "filesize=20000" to "filesize=20M" fixes the problem for me under
> Linux.
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