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https://issues.apache.org/jira/browse/NIFI-11789?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17746735#comment-17746735
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Matt Burgess commented on NIFI-11789:
-------------------------------------

I'm assuming when you mean "merge all batches together", you mean merge all 
FlowFiles from a single batch together? Or are you looking to set the final 
count on the final FlowFile even if Output Batch Size is set?

> ExecuteSQL doesn't set fragment.count attribute when Output Batch Size is set
> -----------------------------------------------------------------------------
>
>                 Key: NIFI-11789
>                 URL: https://issues.apache.org/jira/browse/NIFI-11789
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Extensions
>            Reporter: Tamas Neumer
>            Assignee: Matt Burgess
>            Priority: Minor
>             Fix For: 1.latest, 2.latest
>
>
> Hi,
> I am working with the ExecuteSQL processor and discovered an unexpected 
> behavior. If I specify the attribute "Output Batch Size", I get the 
> fragment.index on the outflowing flowing Flowfiles, but the fragment.count 
> attribute is not set (according to the documentation).
> The behavior I would expect (in line with how merge processors work) is that 
> the attribute fragment.count is just set at the last Flowfile for the batch. 
> This would make it possible to merge all the batches together afterward.
> So my proposal, in short, is that the fragment.count should be set in the 
> last Flowfile of a batch. 
> BR Florian



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