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https://issues.apache.org/jira/browse/HADOOP-3521?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Yang updated HADOOP-3521:
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Priority: Blocker (was: Major)
Mark as blocker, need mapreduce metrics for performance analysis.
> 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
> Priority: Blocker
>
> 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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