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[MAPREDUCE-5199] AppTokens file can/should be removed - MapReduce - [issue]
...All the required tokens are propagated to AMs and containers via startContainer(), no need for explicitly creating the app-token file that we have today.....
http://issues.apache.org/jira/browse/MAPREDUCE-5199    Author: Vinod Kumar Vavilapalli, 2013-06-14, 15:15
[MAPREDUCE-5289] Update MR App to use Token directly after YARN-717 - MapReduce - [issue]
...Ticket for tracking MR changes after YARN-717....
http://issues.apache.org/jira/browse/MAPREDUCE-5289    Author: Vinod Kumar Vavilapalli, 2013-06-02, 15:07
[MAPREDUCE-5282] Update MR App to use immutable ApplicationID after YARN-716 - MapReduce - [issue]
http://issues.apache.org/jira/browse/MAPREDUCE-5282    Author: Vinod Kumar Vavilapalli, 2013-05-31, 15:07
[expand - 1 more] - Re: Is FileSystem thread-safe? - MapReduce - [mail # user]
...I see. The lots-of-part-files pattern is what most of us end up using.  Thanks, +Vinod Kumar Vavilapalli  On May 17, 2013, at 10:16 AM, John Lilley wrote:  ...
   Author: Vinod Kumar Vavilapalli, 2013-05-17, 17:34
Re: Memory Leak while using LocalJobRunner - MapReduce - [mail # user]
...It's inconvenient, but you can try DefaultMetricsSystem.shutDown(). Please see if that works and file a ticket to make LocalJobRunner automatically do this on finish.  Thanks, +Vinod Ku...
   Author: Vinod Kumar Vavilapalli, 2013-05-17, 17:33
[expand - 2 more] - Re: Distribution of native executables and data for YARN-based execution - MapReduce - [mail # user]
...I have a little bit of conflict of interest given I worked on Hadoop YARN all time but..  I have worked on torque/condor based resource management systems too. There are many advantages...
   Author: Vinod Kumar Vavilapalli, 2013-05-17, 17:08
Re: MapReduce - FileInputFormat and Locality - MapReduce - [mail # user]
...I think you misread it.  If a given split has only one block, it uses all the locations of that block.  If it so happens that a given split has multiple blocks, it uses all the loc...
   Author: Vinod Kumar Vavilapalli, 2013-05-08, 22:00
Re: 2.0.4 beta vs 2.0.3 - MapReduce - [mail # dev]
...Looks like this bug reached a tipping point - multiple people reporting this after a long long time ;)  +Vinod Kumar Vavilapalli  On May 6, 2013, at 8:09 AM, Jason Lowe wrote: &nbs...
   Author: Vinod Kumar Vavilapalli, 2013-05-06, 19:12
[expand - 2 more] - Re: problem in switching to branch-2 - MapReduce - [mail # dev]
...branch-1.2 has lib/conf/logs etc.  branch-2's directory structure and the content is similar to trunk, so you may already be seeing correct code.  See pom.xml and look for the firs...
   Author: Vinod Kumar Vavilapalli, 2013-04-29, 17:11
Re: Relations ship between HDFS_BYTE_READ and Map input bytes - MapReduce - [mail # user]
...They can be different if maps read HDFS files directly instead of or on top of getting key-val pairs via the map interface.  HDFS_BYTES_READ will always be greater than or equal to map-...
   Author: Vinod Kumar Vavilapalli, 2013-04-29, 17:05
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB