[jira] [Commented] (NIFI-4136) GrokReader - Add a failure option to unmatch behavior options

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NIFI-4136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16474860#comment-16474860 ] 

ASF GitHub Bot commented on NIFI-4136:
--------------------------------------

Github user MikeThomsen commented on the issue:

    https://github.com/apache/nifi/pull/1955
  
    @ottobackwards can you compare this against your latest changes and see if it's still needed?


> 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
>            Priority: Major
>
> 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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