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https://issues.apache.org/jira/browse/CASSANDRA-15839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17152954#comment-17152954
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David Capwell commented on CASSANDRA-15839:
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BTW the check for USING_G1 doesn't handle the case where you disable g1gc. In
a test with -Xmn defined and -XX:-UseG1GC, the following error stops C* from
starting
{code}
+++ echo 'It is not recommended to set -Xmn with the G1 garbage collector. See
comments for -Xmn in jvm-server.options for details.'
It is not recommended to set -Xmn with the G1 garbage collector. See comments
for -Xmn in jvm-server.options for details.
+++ exit 1
{code}
> Warn or fail to start server when G1 is used and Xmn is set
> -----------------------------------------------------------
>
> Key: CASSANDRA-15839
> URL: https://issues.apache.org/jira/browse/CASSANDRA-15839
> Project: Cassandra
> Issue Type: Improvement
> Components: Local/Startup and Shutdown
> Reporter: Jeremy Hanna
> Assignee: Anthony Grasso
> Priority: Normal
> Fix For: 4.0, 4.0-alpha5
>
>
> In jvm.options, we currently have a comment above where Xmn is set that says
> that you shouldn't set Xmn with G1 GC. That isn't enough - we should either
> warn in the logs or fail startup when they are set together.
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