[NIFI-5771] If 0-byte FlowFiles are load balanced, can result in content claim not being cleaned up

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 1.9.0
• Component/s: Core Framework
• Assignee: Mark Payne
• Reporter: Mark Payne
• Created: 31/Oct/18 17:10
• Updated: 31/Oct/18 19:26
• Resolved: 31/Oct/18 19:26

Description

To replicate, create two separate Flows:

GenerateFlowFile (File Size 800 KB) -> UpdateAttribute [auto-terminate]

GenerateFlowFile (FileSize 0 B) -> UpdateAttribute [auto-terminate]

On the second one, that is generating 0-byte flowfiles, configure the Connection to Load Balance (Round Robin is easiest).

Start both flows.

After a minute or two, stop the GenerateFlowFile processors; let the flowfiles finish being processed by UpdateAttribute.

Now, wait for the FlowFile Repository to checkpoint. At this point, the content claim should be cleaned up and delete/archive any content claims (with the exception of a few claims that are still 'writable'). However, some claims are still sticking around when they shouldn't.

Issue Links

• links to: GitHub Pull Request #3118