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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-3521) Hadoop mapreduce task metrics, unable to send metrics data.
Date Fri, 22 Aug 2008 12:34:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-3521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12624735#action_12624735
] 

Hudson commented on HADOOP-3521:
--------------------------------

Integrated in Hadoop-trunk #581 (See [http://hudson.zones.apache.org/hudson/job/Hadoop-trunk/581/])

> Hadoop mapreduce task metrics, unable to send metrics data.
> -----------------------------------------------------------
>
>                 Key: HADOOP-3521
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3521
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>    Affects Versions: 0.18.0
>            Reporter: Eric Yang
>            Assignee: Arun C Murthy
>            Priority: Blocker
>             Fix For: 0.18.0
>
>         Attachments: HADOOP-3521_0_20080723.patch
>
>
> Found the following new metrics in tasktracker:
> mapTaskSlots (short)
> reduceTaskSlots (short)
> tasks_failed_timeout (int)
> tasks_failed_ping (int)
> After configuring Simon to match the new metrics, this error was thrown in the task tracker
log:
> Exception in thread "Timer thread for monitoring mapred" java.lang.ClassCastException:
java.lang.Long
>         at com.yahoo.simon.hadoop.metrics.Client.sendBlurb(Client.java:266)
>         at com.yahoo.simon.hadoop.metrics.SimonContext.emitRecord(SimonContext.java:160)
>         at org.apache.hadoop.metrics.spi.AbstractMetricsContext.emitRecords(AbstractMetricsContext.java:304)
>         at org.apache.hadoop.metrics.spi.AbstractMetricsContext.timerEvent(AbstractMetricsContext.java:290)
>         at org.apache.hadoop.metrics.spi.AbstractMetricsContext.access$000(AbstractMetricsContext.java:50)
>         at org.apache.hadoop.metrics.spi.AbstractMetricsContext$1.run(AbstractMetricsContext.java:249)
>         at java.util.TimerThread.mainLoop(Timer.java:512)
>         at java.util.TimerThread.run(Timer.java:462)

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