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https://issues.apache.org/jira/browse/STORM-971?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15219023#comment-15219023
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Sachin Goyal commented on STORM-971:
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[~abhishek.agarwal], thanks for contributing this. It will be a good metric to 
have in Storm's next release.

Can you please share some numbers on how many failures/minute (or per hour) you 
see on an average?
Some numbers on your kafka-spout settings would also be much useful.

Thanks !

> Storm-Kafka: Emit metric for messages lost due to kafka retention
> -----------------------------------------------------------------
>
>                 Key: STORM-971
>                 URL: https://issues.apache.org/jira/browse/STORM-971
>             Project: Apache Storm
>          Issue Type: Improvement
>          Components: storm-kafka
>            Reporter: Abhishek Agarwal
>            Assignee: Abhishek Agarwal
>             Fix For: 1.0.0, 2.0.0
>
>
> In case of TopicOffsetOutOfRange exception, it is useful to know just how 
> many unread messages were lost. 



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