Yangze Guo created FLINK-16416:
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Summary: Shutdown the task manager gracefully in standalone mode
Key: FLINK-16416
URL: https://issues.apache.org/jira/browse/FLINK-16416
Project: Flink
Issue Type: Improvement
Components: Command Line Client
Reporter: Yangze Guo
Recently, I try to add a new {{GPUManager}} to the {{TaskExecutorServices}}. I
register the "close", in which I write some cleanup logic, function to the
{{TaskExecutorServices#shutDown}}. However, I found that the cleanup logic does
not run as expected in standalone mode.
After an investigation in the codebase, I found that the
{{TaskExecutorServices#shutDown}} will be called only on a fatal error while we
just kill the TM process in the {{flink-daemon.sh}}. However, the LOG shows
that some services did clean up themselves by registering {{shutdownHook}}.
If that is the right way, then we need to register a {{shutdownHook}} for
{{TaskExecutorServices}} as well.
If that is not, we may find another solution to shutdown TM gracefully.
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