Dan Zou created FLINK-33990:
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Summary: Use default classloader in TaskManager when there are no
user jars for job
Key: FLINK-33990
URL: https://issues.apache.org/jira/browse/FLINK-33990
Project: Flink
Issue Type: Sub-task
Reporter: Dan Zou
TaskManager will create a new class loader for each flink job even when it has
no user jars, which may cause metaspace increasing. Flink can use system
classloader for the jobs without jars. A similar optimization has been made in
JM, it make sense to optimize it in TM.
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