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[MAPREDUCE-4513] Make MR AM thread-safe - MapReduce - [issue]
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...Currently MR-AM has a bunch of statics making it thread unsafe. We should fix that....
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http://issues.apache.org/jira/browse/MAPREDUCE-4513
Author: Arun C Murthy,
2012-08-03, 17:44
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Re: task jvm bootstrapping via distributed cache - MapReduce - [mail # user]
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...Stan, You can ask TT to create a symlink to your jar shipped via DistCache: http://hadoop.apache.org/common/docs/r1.0.3/mapred_tutorial.html#Distribut edCache That shoul...
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Author: Arun C Murthy,
2012-08-03, 06:39
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[MAPREDUCE-4327] Enhance CS to schedule accounting for both memory and cpu cores - MapReduce - [issue]
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...With YARN being a general purpose system, it would be useful for several applications (MPI et al) to specify not just memory but also CPU (cores) for their resource requirements. Thus, it wo...
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http://issues.apache.org/jira/browse/MAPREDUCE-4327
Author: Arun C Murthy,
2012-08-02, 22:20
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[MAPREDUCE-4334] Add support for CPU isolation/monitoring of containers - MapReduce - [issue]
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...Once we get in MAPREDUCE-4327, it will be important to actually enforce limits on CPU consumption of containers. Several options spring to mind: taskset (RHEL5+) cgroups (RHEL6+)...
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http://issues.apache.org/jira/browse/MAPREDUCE-4334
Author: Arun C Murthy,
2012-08-02, 15:11
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Re: What are the basic Hadoop Java Classes? - MapReduce - [mail # user]
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...http://hadoop.apache.org/common/docs/r1.0.3/mapred_tutorial.html Arun On Jul 30, 2012, at 12:25 PM, wrote: to run a program in Hadoop? By basic classes I...
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Author: Arun C Murthy,
2012-07-30, 23:41
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Re: Reducer - getMapOutput - MapReduce - [mail # user]
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...Hey Robert, Can you pls share what you are trying to do? Arun On Jul 30, 2012, at 9:10 AM, Grandl Robert wrote: output. connection with the TaskTracker(setupSe...
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Author: Arun C Murthy,
2012-07-30, 17:45
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[MAPREDUCE-1183] Serializable job components: Mapper, Reducer, InputFormat, OutputFormat et al - MapReduce - [issue]
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...Currently the Map-Reduce framework uses Configuration to pass information about the various aspects of a job such as Mapper, Reducer, InputFormat, OutputFormat, OutputCommitter etc. and appl...
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http://issues.apache.org/jira/browse/MAPREDUCE-1183
Author: Arun C Murthy,
2012-07-26, 15:43
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[MAPREDUCE-4476] Add more unit tests for CPU scheduling in CS - MapReduce - [issue]
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...Companion to MAPREDUCE-4327....
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http://issues.apache.org/jira/browse/MAPREDUCE-4476
Author: Arun C Murthy,
2012-07-24, 19:55
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[MAPREDUCE-1966] Fix tracker blacklisting - MapReduce - [issue]
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...The current heuristic of rolling up fixed number of job failures per tracker isn't working well, we need better design/heuristics....
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http://issues.apache.org/jira/browse/MAPREDUCE-1966
Author: Arun C Murthy,
2012-07-23, 20:08
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Re: Need review - MapReduce - [mail # dev]
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...Sure, I'll take a look. I'll ping Bikas who wrote the original too! Thanks Radim! On Jul 20, 2012, at 5:33 AM, Radim Kolar wrote: Arun C. Murthy Hortonworks Inc. http://ho...
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Author: Arun C Murthy,
2012-07-21, 21:17
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