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https://issues.apache.org/jira/browse/HIVE-23185?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17082153#comment-17082153
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Zhihua Deng commented on HIVE-23185:
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The unfinished/some canceled operation logs may remain uncleaned after HS2
restart.
> Historic queries lost after HS2 restart
> ---------------------------------------
>
> Key: HIVE-23185
> URL: https://issues.apache.org/jira/browse/HIVE-23185
> Project: Hive
> Issue Type: Improvement
> Components: HiveServer2
> Reporter: Zhihua Deng
> Priority: Major
>
> QueryInfoCache caches historic queries in memory, when HS2 restart due to OOM
> or upgrade, the queries are no longer seen at webui.
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