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https://issues.apache.org/jira/browse/MAPREDUCE-5873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14173775#comment-14173775
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Hudson commented on MAPREDUCE-5873:
-----------------------------------
FAILURE: Integrated in Hadoop-Mapreduce-trunk #1928 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1928/])
MAPREDUCE-5873. Shuffle bandwidth computation includes time spent waiting for
maps. Contributed by Siqi Li (jlowe: rev
b9edad64034a9c8a121ec2b37792c190ba561e26)
* hadoop-mapreduce-project/CHANGES.txt
*
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/ShuffleSchedulerImpl.java
*
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/Fetcher.java
*
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/test/java/org/apache/hadoop/mapreduce/task/reduce/TestShuffleScheduler.java
*
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/LocalFetcher.java
> Shuffle bandwidth computation includes time spent waiting for maps
> ------------------------------------------------------------------
>
> Key: MAPREDUCE-5873
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5873
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Affects Versions: 2.3.0
> Reporter: Siqi Li
> Assignee: Siqi Li
> Fix For: 2.6.0
>
> Attachments: MAPREDUCE-5873.v1.patch, MAPREDUCE-5873.v2.patch,
> MAPREDUCE-5873.v3.patch, MAPREDUCE-5873.v4.patch, MAPREDUCE-5873.v5.patch,
> MAPREDUCE-5873.v6.patch, MAPREDUCE-5873.v9.patch
>
>
> Currently ShuffleScheduler in ReduceTask JVM status displays bandwidth. Its
> definition however is confusing because it captures the time where there is
> no copying because there is a pause between when new wave of map outputs is
> available.
> current bw is definded as (bytes copied so far) / (total time in the copy
> phase so far)
> It would be more useful
> 1) to measure bandwidth of a single copy call.
> 2) display aggregated bw as long as there is at least one fetcher is in the
> copy call.
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