Greg Fodor created KAFKA-3619:
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Summary: State lock file handle leaks
Key: KAFKA-3619
URL: https://issues.apache.org/jira/browse/KAFKA-3619
Project: Kafka
Issue Type: Bug
Components: streams
Affects Versions: 0.10.0.0
Reporter: Greg Fodor
Assignee: Guozhang Wang
Priority: Critical
The .lock files in the state store directories do not seem to be having their
file handles freed (despite the locks being freed), so on a complex job the
number of file handles in use goes up rapidly as the locks are taken
for the cleanup routine at the end of the thread run loop. Running lsof shows
the number of open filehandles on the .lock file increasing rapidly over time.
In a separate test project, I reproduced the issue and determined that in order
for the filehandle to be relinquished the FileChannel instance must be properly
closed.
PR:
https://github.com/apache/kafka/pull/1267
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