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https://issues.apache.org/jira/browse/NIFI-7086?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17027202#comment-17027202
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Andy LoPresto commented on NIFI-7086:
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Hi Naveen,
I'm sorry to hear you are having performance issues with this processor. Please
feel free to reach out to the [email protected] mailing list to discuss
your configuration, hardware & platform specifications, etc. with a broad
community of NiFi developers and users. However, we have seen much higher
performance for this processor in many scenarios, and this does not qualify as
a critical issue. I am lowering the severity of this issue, and unless we can
determine a code or configuration reason for this problem, in 7 days I will
close the issue. Thank you.
> oracle db read is slow (for me its bug)
> ---------------------------------------
>
> Key: NIFI-7086
> URL: https://issues.apache.org/jira/browse/NIFI-7086
> Project: Apache NiFi
> Issue Type: Bug
> Environment: nifi 1.8.0
> Reporter: naveen kumar saharan
> Priority: Critical
>
> I am not able to fetch oracle db for 1 billion record table. It is taking too
> much time(17 hours).
> I tried creating queries based on dates using executesql ->
> generatetablefetch -> executesql to parallel execution
> small tables also performs slow as compared to python database table fetch
> program around 20 times slower. This is very disapppointing.
> querydatabasetable runs only on primary node with , if i increase thread it
> give duplicate data.
> Then what is the use of concurrent thread?
>
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