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[MAPREDUCE-6073] Description of mapreduce.job.speculative.slowtaskthreshold in mapred-default should be moved into description tags - MapReduce - [issue]
...Currently, description of mapreduce.job.speculative.slowtaskthreshold in mapred-default is put outside of description tags. We should move it into description tags.<property> &nbs...
http://issues.apache.org/jira/browse/MAPREDUCE-6073    Author: Tsuyoshi OZAWA, 2014-09-05, 17:59
[MAPREDUCE-6070] yarn.app.am.resource.mb/cpu-vcores affects uber mode but is not documented - MapReduce - [issue]
...We should document the condition when uber mode is enabled. Currently, users need to read following code to understand the condition.    boolean smallMemory =   &nbs...
http://issues.apache.org/jira/browse/MAPREDUCE-6070    Author: Tsuyoshi OZAWA, 2014-09-05, 17:58
[MAPREDUCE-6067] native-task: fix some counter issues - MapReduce - [issue]
...After running a terasort, I see the spilled records counter at 5028651606, which is about half what I expected to see. Using the non-native collector I see the expected count of 10000000000....
http://issues.apache.org/jira/browse/MAPREDUCE-6067    Author: Todd Lipcon, 2014-09-05, 08:20
[MAPREDUCE-6058] native-task: KVTest and LargeKVTest should check mr job is sucessful - MapReduce - [issue]
...When running KVTest and LargeKVTest, if the job failed for some reason(lack libhadoop.so etc), both native and normal job failed, and both compare empty output directory, so the test passes ...
http://issues.apache.org/jira/browse/MAPREDUCE-6058    Author: Binglin Chang, 2014-09-05, 05:24
[MAPREDUCE-6072] Update INSTALL document - MapReduce - [issue]
..."./hadoop-mapreduce-project/INSTALL" has become stale. The document shows svn as SCM, now we use git ant to compile hadoop-mapreduce-examplesThe document should be updated to link BUILDING.t...
http://issues.apache.org/jira/browse/MAPREDUCE-6072    Author: Akira AJISAKA, 2014-09-05, 04:07
[MAPREDUCE-6063] In sortAndSpill of MapTask.java, size is calculated wrongly when bufend < bufstart. - MapReduce - [issue]
...In sortAndSpill of MapTask.java, size is calculated wrongly when bufend < bufstart.  we should change (bufvoid - bufend) + bufstart to (bufvoid - bufstart) + bufend.Should change&nbs...
http://issues.apache.org/jira/browse/MAPREDUCE-6063    Author: zhihai xu, 2014-09-05, 04:05
Would multireducers be of interest to Hadoop MR core? - MapReduce - [mail # dev]
...Hi,Hadoop includes MultipleOutputs class to deal with MR job that needs towrite to multiple output formats.We at Akamai have extended the idea, and allowed multiple mappers to writeto multip...
   Author: Elazar Leibovich, 2014-09-04, 22:42
[MAPREDUCE-5279] Jobs can deadlock if headroom is limited by cpu instead of memory - MapReduce - [issue]
...YARN-2 imported cpu dimension scheduling, but MR RMContainerAllocator doesn't take into account virtual cores while scheduling reduce tasks.This may cause more reduce tasks to be scheduled b...
http://issues.apache.org/jira/browse/MAPREDUCE-5279    Author: Peng Zhang, 2014-09-04, 16:52
[MAPREDUCE-5221] Reduce side Combiner is not used when using the new API - MapReduce - [issue]
...If a combiner is specified using o.a.h.mapreduce.Job.setCombinerClass - this will silently ignored on the reduce side since the reduce side usage is only aware of the old api combiner.This d...
http://issues.apache.org/jira/browse/MAPREDUCE-5221    Author: Siddharth Seth, 2014-09-04, 04:14
[MAPREDUCE-6057] Remove obsolete entries from mapred-default.xml - MapReduce - [issue]
...The following properties are defined in mapred-default.xml but no longer exist in MRJobConfig.  map.sort.class  mapred.child.env  mapred.child.java.opts &n...
http://issues.apache.org/jira/browse/MAPREDUCE-6057    Author: Ray Chiang, 2014-09-04, 03:56
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