Pierre Villard created NIFI-4262:
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Summary: MergeContent - option to add merged uuid in original flow
files
Key: NIFI-4262
URL: https://issues.apache.org/jira/browse/NIFI-4262
Project: Apache NiFi
Issue Type: Improvement
Components: Extensions
Reporter: Pierre Villard
Assignee: Pierre Villard
With the apparition of Wait/Notify processors it is now possible tackle new
challenges when it comes to synchronize the execution of different parts of the
workflow.
The objective here is the following:
Flow files are sent to a MergeContent processor. Merged flow files are then
sent to a processor A while original flow files are sent to a processor B. I
want to trigger processor B when and only when processor A has completed.
To use the Wait/Notify approach, a common attribute must be available to be
used as a signal in the distributed cache. This JIRA is about adding a
processor property allowing a user to add the UUID of the merged flow file as a
new attribute of all the original flow files that are constituting the merged
flow file.
The template attached to NIFI-4028 can be used for this use case. Note that the
fix for NIFI-4028 is needed to solve the use case described in this JIRA.
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