Matt Burgess created NIFI-5420:
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Summary: Allow StandardProcessSession to calculate duration for
provenance events
Key: NIFI-5420
URL: https://issues.apache.org/jira/browse/NIFI-5420
Project: Apache NiFi
Issue Type: Improvement
Components: Core Framework
Reporter: Matt Burgess
Besides some automatic provenance events being emitted by the framework, the
onus is on each processor to register provenance events and to provide a
duration for the amount of time spent on the operation that results in the
provenance event(s). However, supplying the duration is not mandatory, and if
not provided, a value of -1 is stored to indicate that the duration is unknown.
Unfortunately there are many processors that do not track the operation time
and thus do not store it in the provenance event. However, the time from when a
flow file is fetched or created in a session to the time the provenance event
is recorded is a legitimate measure of the time the flow file spent "active" in
the session, which is the same as the duration of a provenance event.
This Jira proposes to record the "start" time of each flow file (more
specifically, it's StandardRepositoryRecord), and upon session.commit(), record
the duration of the flow file while active in the session into the provenance
event(s), only if the duration has not already been supplied to the provenance
events.
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