[jira] [Commented] (NIFI-7145) Chained SplitText processors unable to handle files in some circumstances

["Otto Fowler (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/NIFI-7145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17036558#comment-17036558 ] 

Otto Fowler commented on NIFI-7145:
-----------------------------------

I tried this:
- download and unpacked attached
- branched rel/nifi-1.11.1
- built 
- ran from nifi-assembly
- imported template
- updated configuration to my download location

outcome: !Screen Shot 2020-02-13 at 17.28.58.png! 

 [^nifi-app.log] 

I am surprised at these errors with this small a flow


> Chained SplitText processors unable to handle files in some circumstances
> -------------------------------------------------------------------------
>
>                 Key: NIFI-7145
>                 URL: https://issues.apache.org/jira/browse/NIFI-7145
>             Project: Apache NiFi
>          Issue Type: Bug
>    Affects Versions: 1.11.1
>         Environment: Docker Image (apache/nifi) running in Kubernetes (1.15)
>            Reporter: Chris Sampson
>            Priority: Minor
>         Attachments: Broken_SplitText.json, Broken_SplitText.xml, Screen Shot 2020-02-13 at 17.28.58.png, nifi-app.log, test.csv.tgz
>
>
> With chained SplitText processors (NiFi 1.11.1 apache/nifi Docker image with default nifi.properties, although configured to allow secure access in my environment with encrypted flowfile/provenance/content repositories, don't know whether that makes a difference): * ingest 40MB CSV file with 50k lines of data (plus 1 header)
>  * SplitText - chunk the file into 10k segments (including header in each file)
>  * SplitText - break each row out into its own FlowFile
>  
>  The 10k chunking works fine, but then the files sit in the queue between the processors forever with the second SplitText sat showing it’s working but never actually produces anything (can’t see anything in the logs, although haven’t turned on debug logging to see whether that would provide anything more).
>   
>  If I reduce the chunk size to 1k then the per-row split works fine - maybe some sort of issue with SplitText and/or swapping of FlowFiles/content to the repositories? Similarly, trying to same with a smaller file (i.e. just include the first 3 columns from teh attached, but keep the 50k rows) seems to work fine too.
>   
>  Example Flow/Template attached with file that breaks the flow (untar and copy into /tmp). Second SplitText set to Concurrency=3 in the template, but fails just the same when set to default Concurrency=1.
>   
>  SplitRecord would be an alternative (which works fine when I try it), but I can’t use that as we potentially lose data if the CSV is malformed (there are more data fields in a row that defined headers - the extra fields are thrown away by the Record processors, which I understand to be normal and that’s fine, but unfortunately I later need to ValidateRecord for each of these rows to check for this kind of invalidity).



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