Vikas Singh created KAFKA-9265:
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Summary: kafka.log.Log instances are leaking on log delete
Key: KAFKA-9265
URL: https://issues.apache.org/jira/browse/KAFKA-9265
Project: Kafka
Issue Type: Bug
Reporter: Vikas Singh
KAFKA-8448 fixes problem with similar leak. The {{Log}} objects are being held
in {{ScheduledExecutor}} {{PeriodicProducerExpirationCheck}} callback. The fix
in KAFKA-8448 was to change the policy of {{ScheduledExecutor}} to remove the
scheduled task when it gets canceled (by calling
{{setRemoveOnCancelPolicy(true)}}).
This works when a log is closed using {{close()}} method. But when a log is
deleted either when the topic gets deleted or when the rebalancing operation
moves the replica away from broker, the {{delete()}} operation is invoked.
{{Log.delete()}} doesn't close the pending scheduled task and that leaks Log
instance.
Fix is to close the scheduled task in the {{Log.delete()}} method too.
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