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https://issues.apache.org/jira/browse/HADOOP-5984?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aaron Kimball updated HADOOP-5984:
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Affects Version/s: 0.18.3
> shuffler penalty box delay time can be negative
> -----------------------------------------------
>
> Key: HADOOP-5984
> URL: https://issues.apache.org/jira/browse/HADOOP-5984
> Project: Hadoop Core
> Issue Type: Bug
> Affects Versions: 0.18.3
> Reporter: Aaron Kimball
>
> We encountered some syslogs with the following lines:
> "attempt_attempt_20090621547_0037_r_000000_0 adding host ftrp0cmt0095 to
> penalty box, next contact in 4 seconds"
> "attempt_attempt_20090621547_0037_r_000000_0 adding host ftrp0cmt0095 to
> penalty box, next contact in 8 seconds"
> "attempt_attempt_20090621547_0037_r_000000_0 adding host ftrp0cmt0095 to
> penalty box, next contact in 16 seconds"
> "ftrp-cmt0095 Will be considered after -3 seconds"
> "ftrp-cmt0095 Will be considered after -63 seconds"
> "ftrp-cmt0095 Will be considered after -123 seconds"
> "ftrp-cmt0095 Will be considered after -183 seconds"
> I tried tracing through the relevant code in
> o.a.h.m.ReduceTask.fetchOutputs() but it's got a pretty lengthy control flow.
> Does anyone know why the 'currentTime' field should skew so much?
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