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[MAPREDUCE-5457] Add a KeyOnlyTextOutputReader to enable streaming to write out text files without separators - MapReduce - [issue]
...MR jobs sometimes want to just output lines of text, not key/value pairs.  TextOutputFormat handles this by, if a null value is given, outputting only the key with no separator.  S...
http://issues.apache.org/jira/browse/MAPREDUCE-5457    Author: Sandy Ryza, 2014-02-24, 20:58
[MAPREDUCE-5487] In task processes, JobConf is unnecessarily loaded again in Limits - MapReduce - [issue]
...Limits statically loads a JobConf, which incurs costs of reading files from disk and parsing XML.  The contents of this JobConf are identical to the one loaded by YarnChild (before addi...
http://issues.apache.org/jira/browse/MAPREDUCE-5487    Author: Sandy Ryza, 2014-02-24, 20:58
[MAPREDUCE-5036] Default shuffle handler port should not be 8080 - MapReduce - [issue]
...The shuffle handler port (mapreduce.shuffle.port) defaults to 8080.  This is a pretty common port for web services, and is likely to cause unnecessary port conflicts....
http://issues.apache.org/jira/browse/MAPREDUCE-5036    Author: Sandy Ryza, 2014-02-24, 20:40
[MAPREDUCE-5763] Warn message about httpshuffle in NM logs - MapReduce - [issue]
...2014-02-20 12:08:45,141 WARN org.apache.hadoop.yarn.server.nodemanager.containermanager.AuxServices: The Auxilurary Service named 'mapreduce_shuffle' in the configuration is for class class ...
http://issues.apache.org/jira/browse/MAPREDUCE-5763    Author: Sandy Ryza, 2014-02-23, 04:21
Re: [VOTE] Release Apache Hadoop 2.3.0 - MapReduce - [mail # dev]
...+1 (non-binding)Built from source and ran jobs on a pseudo-distributed cluster with theFair SchedulerOn Wed, Feb 12, 2014 at 7:56 PM, Xuan Gong  wrote: ...
   Author: Sandy Ryza, 2014-02-13, 21:07
Re: The code for the Shuffle phase of MapReduce - MapReduce - [mail # dev]
...Hi Pramod,For the reduce side, also check out Shuffle.java.-SandyOn Mon, Feb 10, 2014 at 2:54 AM, Pramod Biligiriwrote: ...
   Author: Sandy Ryza, 2014-02-10, 21:40
[expand - 2 more] - Re: Re-swizzle 2.3 - MapReduce - [mail # dev]
...+1 to reverting those JIRAs from branch-2.3.  As YARN-1689 is fixing aproblem caused by YARN-1493 I think we can revert it in branch-2.3 as well.I think we should leave them in branch-2...
   Author: Sandy Ryza, 2014-02-07, 01:15
[MAPREDUCE-5732] Report proper queue when job has been automatically placed - MapReduce - [issue]
...Some schedulers, such as the Fair Scheduler, provide the ability to automatically place an application into a queue based on attributes such as the user and group of the submitter.  In ...
http://issues.apache.org/jira/browse/MAPREDUCE-5732    Author: Sandy Ryza, 2014-01-31, 13:39
[MAPREDUCE-5596] Allow configuring the number of threads used to serve shuffle connections - MapReduce - [issue]
...MR1 had mapreduce.tasktracker.http.threads.  MR2 always uses the Netty default 2 * Runtime.availableProcessors().  We should make this configurable....
http://issues.apache.org/jira/browse/MAPREDUCE-5596    Author: Sandy Ryza, 2014-01-28, 23:33
[MAPREDUCE-5725] TestNetworkedJob relies on the Capacity Scheduler - MapReduce - [issue]
...We should either make this explicit or make it scheduler-agnostic....
http://issues.apache.org/jira/browse/MAPREDUCE-5725    Author: Sandy Ryza, 2014-01-28, 23:33
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