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From Jamie Grier <ja...@data-artisans.com>
Subject Re: Flink Metrics - InfluxDB + Grafana | Help with query influxDB query for Grafana to plot 'numRecordsIn' & 'numRecordsOut' for each operator/operation
Date Wed, 02 Nov 2016 00:34:08 GMT
Hmm.  I can't recreate that behavior here.  I have seen some issues like
this if you're grouping by a time interval different from the metrics
reporting interval you're using, though.  How often are you reporting
metrics to Influx?  Are you using the same interval in your Grafana
queries?  I see in your queries you are using a time interval of 10
seconds.  Have you tried 1 second?  Do you see the same behavior?

-Jamie


On Tue, Nov 1, 2016 at 4:30 PM, Anchit Jatana <development.anchit@gmail.com>
wrote:

> Hi Jamie,
>
> Thank you so much for your response.
>
> The below query:
>
> SELECT derivative(sum("count"), 1s) FROM "numRecordsIn" WHERE "task_name" =
> 'Sink: Unnamed' AND $timeFilter GROUP BY time(1s)
>
> behaves the same as with the use of the templating variable in the 'All'
> case i.e. shows a plots of junk 'negative values'
>
> It shows accurate results/plot when an additional where clause for
> "subtask_index" is applied to the query.
>
> But without the "subtask_index" where clause (which means for all the
> subtask_indexes) it shows some junk/incorrect values on the graph (both
> highly positive & highly negative values in orders of millions)
>
> Images:
>
> <http://apache-flink-user-mailing-list-archive.2336050.
> n4.nabble.com/file/n9816/Incorrect_%28for_all_subtasks%29.png>
>
> <http://apache-flink-user-mailing-list-archive.2336050.
> n4.nabble.com/file/n9816/Correct_for_specific_subtask.png>
>
> Regards,
> Anchit
>
>
>
> --
> View this message in context: http://apache-flink-user-
> mailing-list-archive.2336050.n4.nabble.com/Flink-Metrics-
> InfluxDB-Grafana-Help-with-query-influxDB-query-for-
> Grafana-to-plot-numRecordsIn-numRen-tp9775p9816.html
> Sent from the Apache Flink User Mailing List archive. mailing list archive
> at Nabble.com.
>



-- 

Jamie Grier
data Artisans, Director of Applications Engineering
@jamiegrier <https://twitter.com/jamiegrier>
jamie@data-artisans.com

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