[pulsar-client] clean up MultiTopicsConsumerImpl reference on consumer creation failure #11754
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Motivation
Partitioned-topic Consumer doesn't cleanup the resources when it fails to create consumer, and it creates memory leak if consumer creation is keep failing with non-recoverable error (eg:
BusySubscriptionError
) which makes application unstable. One of the issue isunAckedMessageTracker
timer, which still keeps consumer reference even after closing the timer-task in cleanup method and consume-creation failure introduces memory leak with objects associated with timer-task.Modification
Close and clean timer task references.