Roman Khachatryan created FLINK-29985:
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Summary: SlotTable not close on TM termination
Key: FLINK-29985
URL: https://issues.apache.org/jira/browse/FLINK-29985
Project: Flink
Issue Type: Bug
Components: Runtime / Task
Affects Versions: 1.16.0, 1.15.3
Reporter: Roman Khachatryan
When a slot is released, the associated resources are released as well, in
particular, MemoryManager. MemoryManager might hold not only memory, but also
some arbitrary shared resources (currently, PythonSharedResources and
RocksDBSharedResources).
When TM is stopped by JManager, its slot table is closed, causing all its slot
to be released
When TM is stopped by SIGTERM (i.e. external resource manager), its slot table
is NOT closed.
That means that in standalone clusters, some resources might not be released.
As of now, RocksDBSharedResources contains only ephemeral resources.
Not sure about PythonSharedResources, but likely it is associated with a
separate process.
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