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https://issues.apache.org/jira/browse/FLINK-25968?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Till Rohrmann updated FLINK-25968:
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Priority: Critical (was: Major)
> Possible class leaks in flink-table / sql modules
> -------------------------------------------------
>
> Key: FLINK-25968
> URL: https://issues.apache.org/jira/browse/FLINK-25968
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner, Table SQL / Runtime
> Affects Versions: 1.15.0
> Reporter: Yun Gao
> Priority: Critical
>
> This is the umbrella issues for possible class leaks in flink-table / sql
> planner and runtimes.
> Currently for a flink cluster, the flink classes are loaded by the system
> ClassLoader while each job would have separate user ClassLoaders. In this
> case, if some class loaded by the system ClassLoader has static variables
> that reference the classes loaded by the user ClassLoaders, the user
> ClassLoaders would not be able to be released, which might cause class leak
> in some way.
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