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Re: resource schedulling - MapReduce - [mail # dev]
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...Sure, thanks! On May 21, 2012, at 2:26 AM, Radim Kolar wrote: MAPREDUCE-4256, please take a look at it and share your comments. Arun C. Murthy Hortonworks Inc. http://horto...
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Author: Arun C Murthy,
2012-05-21, 17:26
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Terasort - MapReduce - [mail # user]
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...Changing subject... On May 10, 2012, at 3:40 PM, Jeffrey Buell wrote: those slots are filled with tasks. The problem I ran into was that the maps grabbed all the slots init...
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Author: Arun C Murthy,
2012-05-10, 22:49
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Re: max 1 mapper per node - MapReduce - [mail # user]
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...For terasort you want to fill up your entire cluster with maps/reduces as fast as you can to get the best performance. Just play with #slots. Arun On May 9, 2012, at ...
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Author: Arun C Murthy,
2012-05-10, 20:26
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Re: max 1 mapper per node - MapReduce - [mail # user]
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...We've been against these 'features' since it leads to very bad behaviour across the cluster with multiple apps/users etc. What is your use-case i.e. what are you trying to achiev...
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Author: Arun C Murthy,
2012-05-09, 18:33
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[MAPREDUCE-2694] AM releases too many containers due to the protocol - MapReduce - [issue]
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...AM sends request asking 4 containers on host H1. Asynchronously, host H1 reaches RM and gets assigned 4 containers. RM at this point, sets the value against H1 tozero in its aggregate reques...
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http://issues.apache.org/jira/browse/MAPREDUCE-2694
Author: Arun C Murthy,
2012-04-30, 15:50
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Re: Cleanup after a Job - MapReduce - [mail # user]
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...Use OutputCommitter.(abortJob, commitJob): http://hadoop.apache.org/common/docs/r1.0.2/api/org/apache/hadoop/mapred/O utputCommitter.html Arun On Apr 26, 2012, at 4:44 PM, ...
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Author: Arun C Murthy,
2012-04-29, 17:58
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[MAPREDUCE-278] Proposal for redesign/refactoring of the JobTracker and TaskTracker - MapReduce - [issue]
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...During discussions on HADOOP-815 wrt some hard-to-maintain code on the JobTracker we all agreed that the current state-of-affairs there is brittle and merits some rework.Case in point: there...
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http://issues.apache.org/jira/browse/MAPREDUCE-278
Author: Arun C Murthy,
2012-04-23, 09:34
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Re: after 2 weeks TaskTracker gets hung with 100% CPU consumption - MapReduce - [mail # user]
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...What version of Hadoop are you running? On Apr 21, 2012, at 12:20 AM, Vladimir Egorov wrote: with 100% CPU consumption. Most of the times no new tasks are sent to the node....
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Author: Arun C Murthy,
2012-04-21, 21:07
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Re: find out which user that is running the mapred job - MapReduce - [mail # user]
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...mapred.job.user in JobConf for unsecure mode. In secure mode, I guess your best bet is to use JobHistory file or JobSummary log for the job (available _after_ job completion). &n...
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Author: Arun C Murthy,
2012-04-19, 20:07
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[MAPREDUCE-3461] Move hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site to hadoop-site - MapReduce - [issue]
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...Currently hadoop-mapreduce-project/hadoop-yarn/hadoop-yarn-site has both HDFS and MR docs, we should move it to top-level hadoop-site....
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http://issues.apache.org/jira/browse/MAPREDUCE-3461
Author: Arun C Murthy,
2012-04-18, 20:27
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