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[MAPREDUCE-5462] In map-side sort, swap entire meta entries instead of indexes for better cache performance - MapReduce - [issue]
http://issues.apache.org/jira/browse/MAPREDUCE-5462    Author: Sandy Ryza, 2013-09-25, 00:33
[MAPREDUCE-5367] Local jobs all use same local working directory - MapReduce - [issue]
...This means that local jobs, even in different JVMs, can't run concurrently because they might delete each other's files during work directory setup....
http://issues.apache.org/jira/browse/MAPREDUCE-5367    Author: Sandy Ryza, 2013-09-25, 00:33
[MAPREDUCE-5478] TeraInputFormat unnecessarily defines its own FileSplit subclass - MapReduce - [issue]
...TeraInputFormat defines its own TeraFileSplit subclass of FileSplit that adds a locations field, which is already included in FileSplit.This is causing MR2 TeraSort to fail on MR1, which, fo...
http://issues.apache.org/jira/browse/MAPREDUCE-5478    Author: Sandy Ryza, 2013-09-25, 00:33
[MAPREDUCE-5527] Add CONTAINERS_MILLIS_MAPS|REDUCES counters - MapReduce - [issue]
...It would be helpful to have counters which report the total wallclock time spent in all map/reduce tasks.  This is what SLOTS_MILLIS_MAPS usually did in MR1....
http://issues.apache.org/jira/browse/MAPREDUCE-5527    Author: Sandy Ryza, 2013-09-23, 17:25
[MAPREDUCE-5379] Include token tracking ids in jobconf - MapReduce - [issue]
...HDFS-4680 enables audit logging delegation tokens. By storing the tracking ids in the job conf, we can enable tracking what files each job touches....
http://issues.apache.org/jira/browse/MAPREDUCE-5379    Author: Sandy Ryza, 2013-09-17, 12:34
[MAPREDUCE-5484] YarnChild unnecessarily loads job conf twice - MapReduce - [issue]
...In MR task processes, a JobConf is instantiated with the same job.xml twice, once at the beginning of main() and once in configureTask.  IIUC, the second instantiation is not necessary....
http://issues.apache.org/jira/browse/MAPREDUCE-5484    Author: Sandy Ryza, 2013-08-30, 15:45
[MAPREDUCE-4994] -jt generic command line option does not work - MapReduce - [issue]
...hadoop jar myjar.jar MyDriver -fs file:/// -jt local input.txt output/should run a job using the local file system and the local job runner. Instead it tries to connect to a jobtracker.hadoo...
http://issues.apache.org/jira/browse/MAPREDUCE-4994    Author: Sandy Ryza, 2013-08-27, 23:22
[MAPREDUCE-5372] ControlledJob#getMapredJobID capitalization is inconsistent between MR1 and MR2 - MapReduce - [issue]
...In MR2, the 'd' in Id is lowercase, but in MR1, it is capitalized.  While ControlledJob is marked as Evolving, there is no reason to be inconsistent here....
http://issues.apache.org/jira/browse/MAPREDUCE-5372    Author: Sandy Ryza, 2013-08-23, 19:51
[expand - 2 more] - Re: [VOTE] Release Apache Hadoop 2.1.0-beta - MapReduce - [mail # dev]
...+1 (non-binding)  Built from source, ran jobs on a pseudo-distributed cluster with the Fair Scheduler.  -Sandy   On Tue, Aug 20, 2013 at 7:27 PM, Arun C Murthy  wrote: &n...
   Author: Sandy Ryza, 2013-08-21, 08:36
Re: Is there any way to use a hdfs file as a Circular buffer? - MapReduce - [mail # user]
...Hi Lin,  It might be worth checking out Apache Flume, which was built for highly parallel ingest into HDFS.  -Sandy   On Thu, Aug 15, 2013 at 11:16 AM, Adam Faris  wrote:...
   Author: Sandy Ryza, 2013-08-15, 18:20
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