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[MAPREDUCE-5608] Replace and deprecate mapred.tasktracker.indexcache.mb - MapReduce - [issue]
...In MR2 mapred.tasktracker.indexcache.mb still works for configuring the size of the shuffle service index cache.  As the tasktracker no longer exists, we should replace this with someth...
http://issues.apache.org/jira/browse/MAPREDUCE-5608    Author: Sandy Ryza, 2013-11-07, 02:53
[MAPREDUCE-5592] Backport MAPREDUCE-1119 (stack traces on task timeout) in branch-1 - MapReduce - [issue]
...MAPREDUCE-1119 dumps stack traces on a task timeout, making it easier this difficult case easier to debug.  This made it into 0.21, but never into branch-1, and the backport very very d...
http://issues.apache.org/jira/browse/MAPREDUCE-5592    Author: Sandy Ryza, 2013-11-05, 00:18
[MAPREDUCE-4680] Job history cleaner should only check timestamps of files in old enough directories - MapReduce - [issue]
...Job history files are stored in yyyy/mm/dd folders.  Currently, the job history cleaner checks the modification date of each file in every one of these folders to see whether it's past ...
http://issues.apache.org/jira/browse/MAPREDUCE-4680    Author: Sandy Ryza, 2013-10-29, 13:04
Re: question about preserving data locality in MapReduce with Yarn - MapReduce - [mail # user]
...Hi Ricky,  The input splits contain the locations of the blocks they cover.  The AM gets the information from the input splits and submits requests for those location.  Each c...
   Author: Sandy Ryza, 2013-10-29, 02:21
[MAPREDUCE-5599] JobHistoryServer unnecessarily copies all jobs on each query - MapReduce - [issue]
...Instead, in CachedHistoryStorage, we should only copy jobs that will be returned....
http://issues.apache.org/jira/browse/MAPREDUCE-5599    Author: Sandy Ryza, 2013-10-28, 23:40
Re: Why my tests shows Yarn is worse than MRv1 for terasort? - MapReduce - [mail # user]
...Based on SLOTS_MILLIS_MAPS, it looks like your map tasks are taking about three times as long in MR2 as they are in MR1.  This is probably because you allow twice as many map tasks to r...
   Author: Sandy Ryza, 2013-10-23, 16:40
[MAPREDUCE-5577] Allow querying the JobHistoryServer by job arrival time - MapReduce - [issue]
... The JobHistoryServer REST APIs currently allow querying by job submit time and finish time.  However, jobs don't necessarily arrive in order of their finish time, meaning that a c...
http://issues.apache.org/jira/browse/MAPREDUCE-5577    Author: Sandy Ryza, 2013-10-17, 18:13
Re: streaming documentation in Hadoop 2? - MapReduce - [mail # dev]
...Doc existed in MR1 http://hadoop.apache.org/docs/stable/streaming.html, but it looks like it and a bunch of other stuff (e.g. Rumen and the MapReduce Tutorial) weren't ported over.   On...
   Author: Sandy Ryza, 2013-10-14, 22:28
[MAPREDUCE-5463] Deprecate SLOTS_MILLIS counters - MapReduce - [issue]
...As discussed in MAPREDUCE-5311, the SLOTS_MILLIS_MAPS and SLOTS_MILLIS_REDUCES counters don't really make sense in MR2, and should be deprecated so that they can eventually be removed....
http://issues.apache.org/jira/browse/MAPREDUCE-5463    Author: Sandy Ryza, 2013-10-14, 15:14
pipes not working in MR2? - MapReduce - [mail # dev]
...I'm unable to get a simple hadoop pipes job working in MR2, and got the sense it hasn't been working for a while.  Does anybody have any insight into what's going on?  Has anybody ...
   Author: Sandy Ryza, 2013-10-10, 21:50
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