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https://issues.apache.org/jira/browse/KAFKA-10136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17138182#comment-17138182
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jiamei xie commented on KAFKA-10136:
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??from 
https://github.com/apache/kafka/blob/0.9.0/core/src/main/scala/kafka/tools/ConsumerPerformance.scala#L50

It was "total messages to consume for all threads" ??

 
>From 
>https://github.com/apache/kafka/blob/342c8172d7f4065e78fc29ca4c56fae0289d861d/core/src/main/scala/kafka/tools/ConsumerPerformance.scala#L265,
> it used "messagesRead < config.numMessages" as a condition for the while loop.

And after the while loop, it  called totalMessagesRead.addAndGet(messagesRead)
https://github.com/apache/kafka/blob/342c8172d7f4065e78fc29ca4c56fae0289d861d/core/src/main/scala/kafka/tools/ConsumerPerformance.scala#L286

There are two implement for both older and new consumer.


> Make option threads of ConsumerPerformance work
> -----------------------------------------------
>
>                 Key: KAFKA-10136
>                 URL: https://issues.apache.org/jira/browse/KAFKA-10136
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: jiamei xie
>            Assignee: jiamei xie
>            Priority: Major
>
> Make option threads of ConsumerPerformance work



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