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https://issues.apache.org/jira/browse/MAPREDUCE-2645?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13061268#comment-13061268
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Vinod Kumar Vavilapalli commented on MAPREDUCE-2645:
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bq. 2) Re: ShuffleHandler, is that only true for mapred.-based mapreduces, or
mapreduce. based ones as well?
Mapreduce is a user land library now and so ShuffleHandler has to specially
configured on the NMs to be able to run mapreduce jobs which also have reduces.
Regarding the config item, yes it points to
org.apache.hadoop.mapred.ShuffleHandler and not to mapreduce.
Never mind anyways. I made the change myself.
I noted that the earlier patch is missing. Did you remove it by chance? The
custom around here is that we keep uploading updated patches without deleting
the older ones - serves as a history of the development :)
> Updates to MRv2 INSTALL documentation
> -------------------------------------
>
> Key: MAPREDUCE-2645
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-2645
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: mrv2
> Reporter: Josh Wills
> Assignee: Josh Wills
> Attachments: MAPREDUCE-2645.patch
>
>
> There are a few issues w/the current INSTALL document for MRv2 that I came
> across when I attempted to get it running:
> 1) Correct the mvn arg for skipping tests,
> 2) Add a step to start the yarn historyserver,
> 3) Add instructions to explicitly build the examples jar file and specify the
> mapreduce.clientfactory.class.name parameter correctly for MRv2.
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