Zhang Haoran created NIFI-8744:
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Summary: FlowFile queue Prioritizers will not work when queued
count exceeds nifi.queue.swap.threshold
Key: NIFI-8744
URL: https://issues.apache.org/jira/browse/NIFI-8744
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework
Affects Versions: 1.13.2, 1.6.0
Reporter: Zhang Haoran
There are some FlowFiles in a queue, and the "priority" attribute of each
FlowFile is "9". PriorityAttributePrioritizer is set to the queue.
When the number of FlowFiles in the queue does not exceed the value of
"nifi.queue.swap.threshold", and a new FlowFile with attribute "priority" value
"1" transfered into the queue, it will be ranked at first of the queue;
But when the number of FlowFiles exceeds the threshold, another FlowFile with
the attribute "priority" value "1" into the queue cannot be ranked at first.
This FlowFile may be directly swapped to disk, so the prioritizer is not
working.
Reproduced on 1.6.0 and the newest release 1.13.2, may exist in all versions
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