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[MAPREDUCE-5842] uber job with LinuxContainerExecutor cause exception - MapReduce - [issue]
...enable ubertask with linux container executer cause exception:2014-04-17 23:26:07,859 DEBUG [localfetcher#1] org.apache.hadoop.mapreduce.task.reduce.LocalFetcher: LocalFetcher 1 going to fet...
http://issues.apache.org/jira/browse/MAPREDUCE-5842    Author: Atkins, 2014-04-18, 20:05
[MAPREDUCE-5844] Reducer Preemption is too aggressive - MapReduce - [issue]
...We observed cases where the reducer preemption makes the job finish much later, and the preemption does not seem to be necessary since after preemption both the preempted reducer and the map...
http://issues.apache.org/jira/browse/MAPREDUCE-5844    Author: Maysam Yabandeh, 2014-04-18, 17:26
[MAPREDUCE-3671] AM-NM RPC calls occasionally takes a long time to respond - MapReduce - [issue]
...Observed while looking at MAPREDUCE-3596 and MAPREDUCE-3656.startContainer taking over a minute in some cases, otherwise 15 seconds. Both were observed soon after reduce tasks started. Netwo...
http://issues.apache.org/jira/browse/MAPREDUCE-3671    Author: Siddharth Seth, 2014-04-18, 17:24
Re: Policy on adding timeouts to tests - MapReduce - [mail # dev]
...The most common mistake is making incorrect assumptions on test/componentrun-time. We often forget how slower/faster things can be on differentplatforms and how the load on the machine at th...
   Author: Kihwal Lee, 2014-04-18, 17:17
[MAPREDUCE-5849] ReduceContextImpl.ValueIterable can only be iterated once - MapReduce - [issue]
...Since ValueIterable reuses same iterator object it cannot be iterated more than once. This behaviour is counter-intuitive (with regards to Iterable usage) and thus difficult to spot.Unless t...
http://issues.apache.org/jira/browse/MAPREDUCE-5849    Author: Ivan Balashov, 2014-04-18, 15:41
[MAPREDUCE-3089] Augment TestRMContainerAllocator to verify MAPREDUCE-2646 - MapReduce - [issue]
http://issues.apache.org/jira/browse/MAPREDUCE-3089    Author: Arun C Murthy, 2014-04-17, 18:59
[MAPREDUCE-3191] docs for map output compression incorrectly reference SequenceFile - MapReduce - [issue]
...The documentation currently says that map output compression uses SequenceFile compression. This hasn't been true in several years, since we use IFile for intermediate data now....
http://issues.apache.org/jira/browse/MAPREDUCE-3191    Author: Todd Lipcon, 2014-04-17, 16:02
Error security.UserGroupInformation: PriviledgedActionException - MapReduce - [mail # dev]
...Hi, Whenever i m trying to execute a map reduce job to write to Hbase table im getting the following error in the console. I am running the MR job fromthe user account.ERROR security.Us...
   Author: Knowledge gatherer, 2014-04-17, 14:17
[MAPREDUCE-3286] Unit tests for MAPREDUCE-3186 - User jobs are getting hanged if the Resource manager process goes down and comes up while job is getting executed. - MapReduce - [issue]
...If the resource manager is restarted while the job execution is in progress, the job is getting hanged.UI shows the job as running.In the RM log, it is throwing an error "ERROR org.apache.ha...
http://issues.apache.org/jira/browse/MAPREDUCE-3286    Author: Eric Payne, 2014-04-17, 14:12
[MAPREDUCE-4711] Append time elapsed since job-start-time for finished tasks - MapReduce - [issue]
...In 0.20.x/1.x, the analyze job link gave this informationThe last Map task task_<sometask> finished at (relative to the Job launch time): 5/10 20:23:10 (1hrs, 27mins, 54sec)The time it...
http://issues.apache.org/jira/browse/MAPREDUCE-4711    Author: Ravi Prakash, 2014-04-17, 10:27
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