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[PIG-4072] secondary sort optimizer to support multiple predecessors - Pig - [issue]
...As described in PIG-4064, SecondaryOptimizer does not handle two predecessors. When we process the first predecessor, we remove the foreach inner operators from the reduce side, and the seco...
http://issues.apache.org/jira/browse/PIG-4072    Author: Daniel Dai, 2014-07-25, 00:19
[PIG-4071] Fix TestStore.testSetStoreSchema, TestParamSubPreproc.testGruntWithParamSub, TestJobSubmission.testReducerNumEstimation - Pig - [issue]
...There are 3 test failures when running unit tests in MR:TestStore.testSetStoreSchema: fail only in Hadoop 1, we change the test sequence PIG-3935 (before that, we test mr then local, after t...
http://issues.apache.org/jira/browse/PIG-4071    Author: Daniel Dai, 2014-07-25, 00:08
Re: An optimization for ROLLUP Operation on Apache Pig with 50% faster [PIG-4066] - Pig - [mail # dev]
...Very helpful comments.I will fix them up.Thank youQuang-NhatOn Thu, Jul 24, 2014 at 9:54 PM, Cheolsoo Park  wrote: ...
   Author: Quang-Nhat HOANG-XUAN, 2014-07-24, 20:32
[PIG-3878] Improve parallelism of union and join - Pig - [issue]
...Currently if user has no parallel clause specified, then it defaults to 1 and it is bad for performance. MR does not have this issue as for each job number of mappers are determined by input...
http://issues.apache.org/jira/browse/PIG-3878    Author: Rohini Palaniswamy, 2014-07-24, 19:43
[PIG-4069] Limit reduce task should start as soon as one map task finishes - Pig - [issue]
... Set very low values for ShuffleVertexManager.TEZ_AM_SHUFFLE_VERTEX_MANAGER_MIN_SRC_FRACTION and ShuffleVertexManager.TEZ_AM_SHUFFLE_VERTEX_MANAGER_MAX_SRC_FRACTION in case of LIMIT job...
http://issues.apache.org/jira/browse/PIG-4069    Author: Rohini Palaniswamy, 2014-07-24, 19:42
Re: Pigs don't fly - Pig - [mail # user]
...Yes, Satish. I did. It seems that at the end of the day I won't get theperformance that I'd like to have with Pig so easily. Right now, I'mconsidering some alternatives.The main one is to re...
   Author: Rodrigo Ferreira, 2014-07-24, 16:40
Re: Load a file in a Python UDF - Pig - [mail # user]
...Hi Russell,This might be a bit late, but here's an example of how you can load a filein python and pass the results back to Pig:https://github.com/mortarcode/python-filesIt's a Mortar projec...
   Author: Jeremy Karn, 2014-07-24, 11:43
[PIG-3365] Run as uber job if there is only one input split - Pig - [issue]
...Hadoop 2 has support for uber mode (mapreduce.job.ubertask.enable=true) which runs the map and reduce on Application Master itself and reduces the overhead of launching a separate map/reduce...
http://issues.apache.org/jira/browse/PIG-3365    Author: Rohini Palaniswamy, 2014-07-24, 10:03
Re: [wiki] Jira link from wiki doesn't work - Pig - [mail # dev]
...Thanks Cheolsoo.On Wed, Jul 23, 2014 at 11:39 PM, Cheolsoo Park wrote: ...
   Author: Praveen R, 2014-07-24, 07:45
[PIG-3854] Simplify plan of Limit on Tez - Pig - [issue]
...When checking out union followed by limit in PIG-3835, saw that the plan was very complex. We should certainly be able to simplify it....
http://issues.apache.org/jira/browse/PIG-3854    Author: Rohini Palaniswamy, 2014-07-24, 05:28
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