Brandon DeVries created NIFI-846:
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Summary: MonitorActivity not setting start of evaluation period
correctly
Key: NIFI-846
URL: https://issues.apache.org/jira/browse/NIFI-846
Project: Apache NiFi
Issue Type: Bug
Affects Versions: 0.2.1
Reporter: Brandon DeVries
Priority: Minor
MonitorActivity uses a "latestSuccessTransfer" variable to determine
inactivity. This is set when the processor is first instantiated, and then on
successful receipt of a FlowFile. If NiFi takes longer to start up than the
configured threshold to start up, MonitorActivity can emit spurious alerts.
Additionally, if the processor is stopped and then restarted after a period
greater than its threshold, if it doesn't get a FlowFile on its first run of
OnTrigger, it can emit a spurious alert as well.
A possible solution would be to add an @OnScheduled method that does:
{code}
latestSuccessTransfer.set(now);
{code}
This will essentially reset the evaluation period whenever the processor is
scheduled to run.
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