Yun Gao created FLINK-25968:
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Summary: 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
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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