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https://issues.apache.org/jira/browse/MAPREDUCE-7252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17010848#comment-17010848
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Hudson commented on MAPREDUCE-7252:
-----------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #17832 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/17832/])
MAPREDUCE-7252. Handling 0 progress in SimpleExponential task runtime (jeagles:
rev cdd6efd3ab6917e30b4c5c7b261f61838901bb37)
* (edit)
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/speculate/DataStatistics.java
* (edit)
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/speculate/forecast/SimpleExponentialSmoothing.java
* (edit)
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/MRApp.java
* (edit)
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-jobclient/src/test/java/org/apache/hadoop/mapreduce/v2/TestSpeculativeExecutionWithMRApp.java
* (edit)
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/speculate/SimpleExponentialTaskRuntimeEstimator.java
* (add)
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/main/java/org/apache/hadoop/mapreduce/v2/app/speculate/forecast/package-info.java
> Handling 0 progress in SimpleExponential task runtime estimator
> ---------------------------------------------------------------
>
> Key: MAPREDUCE-7252
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-7252
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Ahmed Hussein
> Assignee: Ahmed Hussein
> Priority: Minor
> Attachments: MAPREDUCE-7252.001.patch, MAPREDUCE-7252.002.patch,
> MAPREDUCE-7252.003.patch
>
>
> The simple exponential runtime estimator (added in MAPREDUCE-7208) seems not
> to handle the corner cases where the delta progress is 0. As a result, the
> forecast will be NaN or Inf which messes up the subsequent forecast values.
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