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https://issues.apache.org/jira/browse/NIFI-5874?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pierre Villard resolved NIFI-5874.
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Resolution: Feedback Received
Apache NiFi 1.x is no longer maintained and no new release is planned on the
1.x release line. Marking as resolved as part of a cleanup operation. Please
open a new one with an updated description if this is still relevant for NiFi
2.x.
> CSVReader and CSVRecordSetWriter inject transformed backslash sequences from
> input
> ----------------------------------------------------------------------------------
>
> Key: NIFI-5874
> URL: https://issues.apache.org/jira/browse/NIFI-5874
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Affects Versions: 1.8.0
> Reporter: Ed Berezitsky
> Priority: Major
> Attachments: csv_bug.xml
>
>
> If there is backslash sequence (like \t, \n, etc) in the input,
> CSVRecordSetWriter transforms them into actual characters (new line, tab,
> etc) in output record.
> For example, input record:
>
> {code:java}
> case,a,a1
> tab,=\t=,-
> {code}
>
> Update Record with `/a1: /a` (just copy value from one field to another)
> JsonRecordSetWriter will produce:
> {code:java}
> [{"case":"tab","a":"=\t=","a1":"=\t="}]{code}
> and CSVRecordSetWriter will produce:
> {code:java}
> case,a,a1
> tab,= =,= =
> {code}
> there is a actual "tab" in between "="
> In JSON objecr above, \t mean escaped tab. The actual issue is coming from
> both CSV Reader and Writer.
> Reader converts unescaped sequence of characters into actual character, but
> Writer doesn't escape them back when writes results, while JSON Writer does
> that.
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