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Re: killApplication doesn't kill AppMaster - MapReduce - [mail # dev]
...Did you grab a stack trace of the AM?  On Aug 22, 2012, at 4:01 PM, Bo Wang wrote:   Arun C. Murthy Hortonworks Inc. http://hortonworks.com/  ...
   Author: Arun C Murthy, 2012-08-22, 23:22
[MAPREDUCE-4575] Add an option to drain the JobTracker jobs for upgrades - MapReduce - [issue]
...Following on from MAPREDUCE-4328 it will be useful to allow an option to drain the JobTracker so that it will finish up existing jobs and not accept new ones.This is particularly useful duri...
http://issues.apache.org/jira/browse/MAPREDUCE-4575    Author: Arun C Murthy, 2012-08-22, 22:53
Re: Help for Hadoop 2.0 - MapReduce - [mail # user]
...Look at the links Arpit pointed out:   http://hadoop.apache.org/common/docs/current/hadoop-yarn/hadoop-yarn-site/ ClusterSetup.html  On Aug 21, 2012, at 1:25 PM, Pedamallu Chandra ...
   Author: Arun C Murthy, 2012-08-21, 23:03
Re: Significance of file.out.index during Shuffle Phase ? - MapReduce - [mail # dev]
...You'll need to make significant changes MapTask.java which won't make it  back to the mainline.  Why? We had this before and quickly ran out of inodes on the local-disk.  Thin...
   Author: Arun C Murthy, 2012-08-20, 02:54
Re: Hadoop hardware failure recovery - MapReduce - [mail # user]
...Yep, hadoop-2 is alpha but is progressing nicely...  However, if you have access to some 'enterprise HA' utilities (VMWare or  Linux HA) you can get *very decent* production-grade ...
   Author: Arun C Murthy, 2012-08-12, 19:07
Re: task jvm bootstrapping via distributed cache - MapReduce - [mail # user]
...Just do -javaagent:./profiler.jar?  On Aug 3, 2012, at 9:32 AM, Stan Rosenberg wrote:  wrote: http://hadoop.apache.org/common/docs/r1.0.3/mapred_tutorial.html#Distribut edCache &nb...
[+ more]    Author: Arun C Murthy, 2012-08-03, 20:19
[MAPREDUCE-4513] Make MR AM thread-safe - MapReduce - [issue]
...Currently MR-AM has a bunch of statics making it thread unsafe. We should fix that....
http://issues.apache.org/jira/browse/MAPREDUCE-4513    Author: Arun C Murthy, 2012-08-03, 17:44
[MAPREDUCE-4327] Enhance CS to schedule accounting for both memory and cpu cores - MapReduce - [issue]
...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...
http://issues.apache.org/jira/browse/MAPREDUCE-4327    Author: Arun C Murthy, 2012-08-02, 22:20
[MAPREDUCE-4334] Add support for CPU isolation/monitoring of containers - MapReduce - [issue]
...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+)...
http://issues.apache.org/jira/browse/MAPREDUCE-4334    Author: Arun C Murthy, 2012-08-02, 15:11
Re: What are the basic Hadoop Java Classes? - MapReduce - [mail # user]
...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...
   Author: Arun C Murthy, 2012-07-30, 23:41
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