[NIFI-3897] Queue with flow files thinks it is empty

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.2.0
• Fix Version/s: 1.4.0
• Component/s: Core Framework
• Assignee: Mark Payne
• Reporter: Joe Gresock
• Created: 15/May/17 14:38
• Updated: 30/Jun/17 11:54
• Resolved: 30/Jun/17 11:54

Description

A particular queue is listed as having 80,000 flow files, but NiFi thinks there are none to list. I was originally inclined to believe that the queue is indeed empty, and that there is somehow a pointer to 80,000 flow files leftover on the queue.

Unfortunately, the logs have rolled over so I can't see what error or warning messages may have happened at the time, and I can't reproduce it reliably.

Update: I happened to reboot my cluster, and suddenly the 80,000 flow files went through the flow. This makes the problem considerably worse, since it appears the flow files were "invisible" until the reboot.

Issue Links

• links to: GitHub Pull Request #1960