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https://issues.apache.org/jira/browse/NIFI-4081?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16061428#comment-16061428
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ASF GitHub Bot commented on NIFI-4081:
--------------------------------------

Github user bbende commented on a diff in the pull request:

    https://github.com/apache/nifi/pull/1921#discussion_r123831362
  
    --- Diff: 
nifi-nar-bundles/nifi-standard-services/nifi-record-serialization-services-bundle/nifi-record-serialization-services/src/main/java/org/apache/nifi/grok/GrokRecordReader.java
 ---
    @@ -89,6 +93,7 @@ public Record nextRecord() throws IOException, 
MalformedRecordException {
             // the next call to nextRecord()) or we will attach it to the 
previously read record.
             String stackTrace = null;
             final StringBuilder toAppend = new StringBuilder();
    +        final StringBuilder raw = new StringBuilder(line);
    --- End diff --
    
    I think this needs to be updated slightly based on some changes in master, 
looks like the beginning of this method changed a little bit and the 'line' 
variable is no longer visible here 


> GrokReader - add the option to keep raw message in a dedicated field
> --------------------------------------------------------------------
>
>                 Key: NIFI-4081
>                 URL: https://issues.apache.org/jira/browse/NIFI-4081
>             Project: Apache NiFi
>          Issue Type: Improvement
>          Components: Extensions
>    Affects Versions: 1.3.0
>            Reporter: Pierre Villard
>            Assignee: Pierre Villard
>            Priority: Minor
>
> In some use cases, it can be useful to keep the raw message in the record. I 
> propose to add a parameter to the GrokReader allowing the user to store in 
> the field {{rawMessage}} the raw content of the record (stack trace included 
> if any).



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