kafka-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (KAFKA-3111) java.lang.ArithmeticException: / by zero in ConsumerPerformance
Date Mon, 18 Jan 2016 21:59:40 GMT

    [ https://issues.apache.org/jira/browse/KAFKA-3111?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15105869#comment-15105869
] 

ASF GitHub Bot commented on KAFKA-3111:
---------------------------------------

GitHub user vahidhashemian opened a pull request:

    https://github.com/apache/kafka/pull/788

    KAFKA-3111: Fix ConsumerPerformance output for zero interval lengths

    Interval lengths for ConsumerPerformance could sometime be calculated as zero. In such
cases, when the bytes read or messages read are also zero a NaN output is returned for mbRead
per second or for nMsg per second, whereas zero would be a more appropriate output.
    
    In cases where interval length is zero but there have been data and messages to read,
an output of Infinity is returned, as expected.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/vahidhashemian/kafka KAFKA-3111

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/kafka/pull/788.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #788
    
----
commit 34c54e98c5e641986d74506edfd17b0c0ba105c2
Author: Vahid Hashemian <vahidhashemian@us.ibm.com>
Date:   2016-01-18T21:50:02Z

    KAFKA-3111: Fix ConsumerPerformance output for zero interval lengths

----


> java.lang.ArithmeticException: / by zero in ConsumerPerformance
> ---------------------------------------------------------------
>
>                 Key: KAFKA-3111
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3111
>             Project: Kafka
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 0.9.0.0
>            Reporter: Jun Rao
>            Assignee: Vahid Hashemian
>              Labels: newbie
>
> Saw the following error. If there are lots of unconsumed messages, between two iterations
of the consumption, the timestamp may not have changed.
> kafka-consumer-perf-test --zookeeper localhost:2181 --topic test --group test-group --threads
1 --show-detailed-stats --reporting-interval 5000
> 2016-01-13 09:12:43:905, 0, 1048576, 35.2856, 238.4186, 370000, 2500000.0000
> 2016-01-13 09:12:43:916, 0, 1048576, 35.7624, 47.6837, 375000, 500000.0000
> java.lang.ArithmeticException: / by zero
>         at kafka.tools.ConsumerPerformance$ConsumerPerfThread.printMessage(ConsumerPerformance.scala:189)
>         at kafka.tools.ConsumerPerformance$ConsumerPerfThread.run(ConsumerPerformance.scala:164)
> 2016-01-13 09:12:43:918, 0, 1048576, 36.2393, 0.7117, 380000, 7000.0000



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Mime
View raw message