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https://issues.apache.org/jira/browse/NIFI-4838?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mike Thomsen updated NIFI-4838:
-------------------------------
    Resolution: Won't Fix
        Status: Resolved  (was: Patch Available)

The only elegant way to do this would require either changing a lot of 
functionality in the ProcessSession or enabling two ProcessSessions that can 
cooperate. Either way, I think it's overkill for something like this.

> Make GetMongo support multiple commits and give some progress indication
> ------------------------------------------------------------------------
>
>                 Key: NIFI-4838
>                 URL: https://issues.apache.org/jira/browse/NIFI-4838
>             Project: Apache NiFi
>          Issue Type: Improvement
>            Reporter: Mike Thomsen
>            Assignee: Mike Thomsen
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> It shouldn't wait until the end to do a commit() call because the effect is 
> that GetMongo looks like it has hung to a user who is pulling a very large 
> data set.
> It should also have an option for running a count query to get the current 
> approximate count of documents that would match the query and append an 
> attribute that indicates where a flowfile stands in the total result count. 
> Ex:
> query.progress.point.start = 2500
> query.progress.point.end = 5000
> query.count.estimate = 17,568,231



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