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https://issues.apache.org/jira/browse/NIFI-4136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16265233#comment-16265233
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Kay-Uwe Moosheimer commented on NIFI-4136:
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Wouldn't it be better if only the incorrect lines were forwarded to an error
relationship?
Or both variants to the option. Forward the complete flowfile or just the
collected wrong lines.
In this way, you have the choice of being able to continue processing at least
for correct rows and the incorrect ones in postprocessing.
> GrokReader - Add a failure option to unmatch behavior options
> -------------------------------------------------------------
>
> Key: NIFI-4136
> URL: https://issues.apache.org/jira/browse/NIFI-4136
> Project: Apache NiFi
> Issue Type: Improvement
> Components: Extensions
> Reporter: Pierre Villard
> Assignee: Pierre Villard
>
> At the moment, when using the GrokReader, if a line does not match the grok
> expression (and is not part of a stack trace), the line can be either ignored
> (the line will be completely skipped) or appended to the last field from the
> previous line.
> In the case where appending is not desired and that data should not be
> ignored/deleted, we should add the option to route the full flow file to the
> failure relationship. This way the flow file could be treated in a different
> way (for example with SplitText and ExtractGrok to isolate the incorrect
> lines and re-route the correct lines back to the Record processors).
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