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Re: How is the memory usage of containers controlled? - MapReduce - [mail # user]
...NodeManagers monitor containers w.r.t memory usage, and put containers in cgroups with cpu limits to restrict CPU usage.  On Jun 18, 2013, at 12:30 PM, Yuzhang Han  wrote:   A...
   Author: Arun C Murthy, 2013-06-18, 20:07
[MAPREDUCE-5108] Changes needed for Binary Compatibility for MR applications via YARN - MapReduce - [issue]
...As we get ready to ship out a beta/stable version of hadoop-2, it makes sense to spend time reviewing support for existing MR applications (hadoop-1) to migrate seamlessly.We've done various...
http://issues.apache.org/jira/browse/MAPREDUCE-5108    Author: Arun C Murthy, 2013-06-18, 17:43
Re: mapred queue -list - MapReduce - [mail # user]
...Capacity is 'guaranteed' capacity, while max-capacity can we configured to be greater than capacity.  Arun  On Jun 13, 2013, at 5:28 AM, Pedro Sá da Costa wrote:   Arun C. Mur...
   Author: Arun C Murthy, 2013-06-14, 20:16
Re: Bringing Hadoop to Fedora - MapReduce - [mail # dev]
...Tim,    This is great! I'll take a look at some of these patches, welcome!  Arun  On Jun 11, 2013, at 8:54 AM, Tim St Clair wrote:   Arun C. Murthy Hortonworks Inc. ...
   Author: Arun C Murthy, 2013-06-11, 17:54
Re: Resource manager question - Yarn - MapReduce - [mail # user]
...The reason is that you don't want a socket to the RM machine to be held up - we expect to have thousands of AMs running concurrently. Essentially a blocking call could result in a DoS attack...
   Author: Arun C Murthy, 2013-06-10, 21:07
Re: log4j defaults for AM & task - MapReduce - [mail # user]
...Unfortunately this isnt' well documented, but if the cmd-line for your container has , that variable will be substituted by the NodeManager with the directory where the logs will be put. &nb...
   Author: Arun C Murthy, 2013-06-06, 20:24
Re: YARN task default output - MapReduce - [mail # user]
...You can enable log-aggregation where-by your application logs will be uploaded to HDFS.  Overview here: http://hortonworks.com/blog/apache-hadoop-yarn-nodemanager/  Configurations ...
   Author: Arun C Murthy, 2013-06-06, 20:07
Re: What else can be built on top of YARN. - MapReduce - [mail # user]
...John,  On Jun 1, 2013, at 7:02 AM, John Lilley wrote:   You might be interested in MPICH2 on YARN: https://github.com/clarkyzl/mpich2-yarn  Disclaimer: I haven't used it mysel...
   Author: Arun C Murthy, 2013-06-06, 13:41
Re: Management API - MapReduce - [mail # user]
...You might want to look at Apache Ambari - it's got a pretty comprehensive set of APIs of the kind you seek.  https://github.com/apache/ambari/blob/trunk/ambari-server/docs/api/v1/index....
   Author: Arun C Murthy, 2013-06-06, 13:37
Re: MAPREDUCE-5183 PATCH submission - MapReduce - [mail # dev]
...Thanks! And welcome!  On May 22, 2013, at 8:21 PM, maisnam ns wrote:   Arun C. Murthy Hortonworks Inc. http://hortonworks.com/  ...
   Author: Arun C Murthy, 2013-05-23, 18:13
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