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Re: Shuffle phase: fine-grained control of data flow - MapReduce - [mail # dev]
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...Jiwei, Ok so you are specifically looking at reducing overall network bandwidth of skewed map outputs, not all map outputs. That would very much mean that #1 and #3 are off base....
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Author: Robert Evans,
2012-11-08, 16:59
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Re: Shuffle phase: fine-grained control of data flow - MapReduce - [mail # dev]
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...Jiwei, I think you could use that knowledge to launch reducers closer to the map output, but I am not sure that it would make much difference. It may even slow things down. It is...
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Author: Robert Evans,
2012-11-07, 15:45
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Re: division by zero in getLocalPathForWrite() - MapReduce - [mail # dev]
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...It looks like you are running with an older version of 2.0, even though it does not really make much of a difference in this case, The issue shows up when getLocalPathForWrite thinks t...
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Author: Robert Evans,
2012-10-25, 14:07
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Re: pluggable resources - MapReduce - [mail # dev]
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...I agree that having it be pluggable opens up a lot of new possibilities. +1 for the idea. Although I think in the short term we are having enough problems as it is with just CPU and me...
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Author: Robert Evans,
2012-10-22, 16:56
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Re: Can some committer commit MAPREDUCE-4479? - MapReduce - [mail # dev]
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...Looking at it now. Thanks for being a squeaky wheel :). On 10/19/12 12:38 PM, "Mariappan Asokan" wrote: ...
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Author: Robert Evans,
2012-10-19, 17:44
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Re: API Design: getClusterMetrics - MapReduce - [mail # dev]
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...Sapsi, I am not positive on this but I think the reason for this is to future proof the API. If in the future we want to add in new optional parameters, I believe that it is impo...
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Author: Robert Evans,
2012-10-10, 14:30
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Re: Fix versions for commits branch-0.23 - MapReduce - [mail # dev]
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...I don't see much of a reason to have the same JIRA listed under both 0.23 and 2.0. I can see some advantage of being able to see what went into 0.23.X by looking at a 2.0.X CHANGES.txt...
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Author: Robert Evans,
2012-10-09, 16:09
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Re: Commits breaking compilation of MR 'classic' tests - MapReduce - [mail # dev]
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...That is fine, we may want to then mark it so that the MR-4687 depends on th e JIRA to port the tests, so the tests don't disapear before we are done. From: Arun C Murthy > Date: We...
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Author: Robert Evans,
2012-09-26, 17:54
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Re: Commits breaking compilation of MR 'classic' tests - MapReduce - [mail # dev]
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...As per my comment on the bug. I though we were going to remove them. MAPREDUCE-4266 only needs a little bit more work, change a patch to a script, before they disappear entirely....
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Author: Robert Evans,
2012-09-26, 16:54
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Re: multipleoutputs does not like speculative execution in map-only job - MapReduce - [mail # user]
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...What version of Hadoop is this on? On 9/13/12 3:09 AM, "Radim Kolar" wrote: ...
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Author: Robert Evans,
2012-09-13, 15:31
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