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[MAPREDUCE-4851] add lifecycle to Comparators - MapReduce - [issue]
...current mapreduce api is using RawComparator interface in:setGroupingComparatorClasssetSortComparatorClassThis interface has no lifecycle support. I propose to change that methods to take ar...
http://issues.apache.org/jira/browse/MAPREDUCE-4851    Author: Radim Kolar , 2013-01-01, 10:53
[MAPREDUCE-3772] MultipleOutputs output lost if baseOutputPath starts with ../ - MapReduce - [issue]
...Lets say you have output directory set:FileOutputFormat.setOutputPath(job, "/tmp/multi1/out");and want to place output from MultipleOutputs into /tmp/multi1/extraI expect following code to w...
http://issues.apache.org/jira/browse/MAPREDUCE-3772    Author: Radim Kolar , 2013-01-01, 10:42
[MAPREDUCE-4839] TextPartioner for hashing Text with good hashing function to get better distribution - MapReduce - [issue]
...partitioner for Text keys using util.Hash framework for hashing function...
http://issues.apache.org/jira/browse/MAPREDUCE-4839    Author: Radim Kolar , 2013-01-01, 10:38
comparators with lifecycle - MapReduce - [mail # dev]
...I plan to implement comparators with lifecycle and make them backward  compatible.  plan: create Class LifecycleComparator implements Comparator after new instance of comparator is...
   Author: Radim Kolar , 2012-12-19, 03:04
[MAPREDUCE-4827] Increase hash quality of HashPartitioner - MapReduce - [issue]
...hash partitioner is using object.hashCode() for splitting keys into partitions. This results in bad distributions because hashCode() quality is poor. These hashCode() functions are sometimes...
http://issues.apache.org/jira/browse/MAPREDUCE-4827    Author: Radim Kolar , 2012-12-17, 23:18
How to compile the JobTracker.java - MapReduce - [mail # dev]
...> I want to customize the JobTracker.java, but I am not getting the source > code on Eclipse. it did not builds in eclipse out of box....
   Author: Radim Kolar , 2012-12-17, 22:55
[expand - 1 more] - One output file per node - MapReduce - [mail # dev]
...if you have strong data locality demands, then try  http://peregrine_mapreduce.bitbucket.org/ Its 2x faster then hadoop for  multipass job types. It has also very fast node recover...
   Author: Radim Kolar , 2012-12-14, 01:03
Multi-stage map/reduce jobs - MapReduce - [mail # user]
...> Otherwise, I guess you could do what Jay has suggested, or look at the > JobControl classes to avoid some of the extra work needed. jobcontrol needs to be server side. just submit bu...
   Author: Radim Kolar , 2012-11-25, 16:57
[MAPREDUCE-4509] Make link in "Aggregation is not enabled. Try the nodemanager at" - MapReduce - [issue]
...if log aggregation is disabled message is displayed Aggregation is not enabled. Try the nodemanager at reavers.com:9006It would be helpfull to make link to nodemanager clickable.This message...
http://issues.apache.org/jira/browse/MAPREDUCE-4509    Author: Radim Kolar , 2012-11-22, 16:36
[MAPREDUCE-4630] API for setting dfs.block.size - MapReduce - [issue]
...Add API for setting block size in Tool while creating MR job.I proposeFileOutputFormat.setBlockSize(Job job, int blocksize);which sets dfs.block.size...
http://issues.apache.org/jira/browse/MAPREDUCE-4630    Author: Radim Kolar , 2012-11-22, 16:22