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Re: [DISCUSS] sort improvement - MapReduce - [mail # dev]
...The sort implementation is pluggable (see MAPREDUCE-2454,MAPREDUCE-4049), so please feel free to fork and improve it. Selectinga sort implementation based on job configuration (e.g.,BinaryCo...
   Author: Chris Douglas, 2014-03-22, 01:27
[MAPREDUCE-5786] Support Keep-Alive connections in ShuffleHandler - MapReduce - [issue]
...Currently ShuffleHandler supports fetching map-outputs in batches from same host.  But there are scenarios wherein, fetchers pull data aggressively (i.e start pulling the data as & ...
http://issues.apache.org/jira/browse/MAPREDUCE-5786    Author: Rajesh Balamohan, 2014-03-21, 21:46
[MAPREDUCE-4878] JobID.forName() isn't strict enough - MapReduce - [issue]
...If you have a job running as job_201208221603_0003, and then try to kill a job passing id job_201208221603_003, it will kill job_201208221603_0003 because the last part of the JobID is parse...
http://issues.apache.org/jira/browse/MAPREDUCE-4878    Author: Robert Kanter, 2014-03-21, 18:29
[MAPREDUCE-5748] Potential null pointer deference in ShuffleHandler#Shuffle#messageReceived() - MapReduce - [issue]
...Starting around line 510:      ChannelFuture lastMap = null;      for (String mapId : mapIds) {...      }      ...
http://issues.apache.org/jira/browse/MAPREDUCE-5748    Author: Ted Yu, 2014-03-21, 01:52
Re: Thinking ahead to 2.4 - MapReduce - [mail # dev]
...Looking forward to the release.  What's the state of the applicationhistory server?  Do we have security, documentation, and are APIs stable? If not, do we have a plan for how...
   Author: Sandy Ryza, 2014-03-20, 19:29
[MAPREDUCE-5788] Modify Fetcher to pull data using persistent connection - MapReduce - [issue]
http://issues.apache.org/jira/browse/MAPREDUCE-5788    Author: Rajesh Balamohan, 2014-03-20, 19:20
[MAPREDUCE-5603] Ability to disable FileInputFormat listLocatedStatus optimization to save client memory - MapReduce - [issue]
...It would be nice if users had the option to disable the listLocatedStatus optimization in FileInputFormat to save client memory....
http://issues.apache.org/jira/browse/MAPREDUCE-5603    Author: Jason Lowe, 2014-03-20, 01:45
SkipBadRecords Usage - MapReduce - [mail # dev]
...How can i implement SkipBadRecords feature in MapReduce applications?I know we can do some logic inside mapper to skip bad records what we thinkwill be bad records but in certain situations ...
   Author: Thirupathi Reddy Guduru, 2014-03-20, 00:50
[MAPREDUCE-5793] Make TestMRJobsWithProfiler#testProfiler faster - MapReduce - [issue]
...TestMRJobsWithProfiler#testProfiler sometimes took more than 120 seconds and then got timeout.https://builds.apache.org/job/PreCommit-HADOOP-Build/3656//testReport/org.apache.hadoop.mapreduc...
http://issues.apache.org/jira/browse/MAPREDUCE-5793    Author: Akira AJISAKA, 2014-03-19, 22:56
[MAPREDUCE-5493] In-memory map outputs can be leaked after shuffle completes - MapReduce - [issue]
...MergeManagerImpl#close adds the contents of inMemoryMergedMapOutputs and inMemoryMapOutputs to a list of map outputs that is subsequently processed, but it does not clear those sets.  T...
http://issues.apache.org/jira/browse/MAPREDUCE-5493    Author: Jason Lowe, 2014-03-19, 18:42
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