Hi Team, I need to bring this issue up https://issues.apache.org/jira/browse/NIFI-6701 as it raised in Sep'19 and seems no fix published till now as issue is still open.
I am also facing the same issue in nifi PublishGCPubsub Processor. Threads are stuck and then messages continuously increased in the queue and showing below error in thread dump {"stackTrace":"\"Timer-Driven Process Thread-50\" Id=8466 TIMED_WAITING on null\n\tat java.lang.Thread.sleep(Native Method)\n\tat org.apache.nifi.processors.gcp.pubsub.PublishGCPubSub.onTrigger(PublishGCPubSub.java:166)\n\tat org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)\n\tat... Looking forward to your quick response on this. Regards Anuj Jain ________________________________ The information contained in this communication is confidential and intended solely for the use of the individual named or entity to whom it is addressed and others authorized to receive it. If you are not the intended recipient you are hereby notified that any disclosure, copying, circulation, distribution or taking any action in reliance on the contents of this information is strictly prohibited and may be unlawful. Please delete it and any attachments from your systems and notify the sender that you have received it in error. Unless stated to the contrary, any opinions expressed in this message are personal and may not be attributed to Aeris Communications.