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https://issues.apache.org/jira/browse/KYLIN-4951?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rofi Yao updated KYLIN-4951:
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Description:
JDK1.8+ is recommended in the Community document.
This issue is to switch JVM settings default from MaxPermSize to
MaxMetaspaceSize.
*Problem discovery*
If you use jdk1.8 and setting MaxPermSize, the query will slow down when
non-heap memory is not recovered timely. The threshold value is about 1GB. The
average query time may change from 500ms to 1000ms, or more.
was:
JDK1.8+ is recommended in the Community document.
This issue is to switch JVM settings default from Permanent to Metaspace.
> Change default JVM settings from MaxPermSize to MaxMetaspaceSize
> ----------------------------------------------------------------
>
> Key: KYLIN-4951
> URL: https://issues.apache.org/jira/browse/KYLIN-4951
> Project: Kylin
> Issue Type: Improvement
> Reporter: Rofi Yao
> Assignee: Rofi Yao
> Priority: Major
> Fix For: Backlog
>
> Attachments: KYLIN-4951.patch
>
> Original Estimate: 24h
> Remaining Estimate: 24h
>
> JDK1.8+ is recommended in the Community document.
> This issue is to switch JVM settings default from MaxPermSize to
> MaxMetaspaceSize.
>
> *Problem discovery*
> If you use jdk1.8 and setting MaxPermSize, the query will slow down when
> non-heap memory is not recovered timely. The threshold value is about 1GB.
> The average query time may change from 500ms to 1000ms, or more.
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