Mark Payne created NIFI-5997:
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Summary: If swap file written but FlowFile Repository fails to
update, connection queue counts wrong and flowfiles are duplicated upon restart
Key: NIFI-5997
URL: https://issues.apache.org/jira/browse/NIFI-5997
Project: Apache NiFi
Issue Type: Bug
Reporter: Mark Payne
Assignee: Mark Payne
Fix For: 1.9.0
If a queue writes out a Swap File but then the FlowFile Repository throws an
Exception when attempting to update, we end up with a scenario where the size
of the queue increases by 10,000 FlowFiles (the number of FlowFiles to be
written to the swap file) as well as the corresponding size of the FlowFiles.
We also have a Swap File that is written out to disk but the FlowFile Repo
didn't get updated so on restart we have those FlowFiles in the FlowFile Repo
as well as in the Swap File, so we end up with two of the same FlowFile. This
can then cause some odd behavior because two FlowFiles exist with the same ID
and the counts on the queues are very wrong, which also causes a lot of
confusion.
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