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[PIG-4148] Tez order-by is often skewed because FindQuantiles UDF is called with small number - Pig - [issue]
...In Tez, FindQuantiles UDF is called with a smaller number of samples than MR resulting in skew in range partitions.For example, I have a job that runs sampling with a parallelism of 300. Sin...
http://issues.apache.org/jira/browse/PIG-4148    Author: Cheolsoo Park, 2014-08-31, 23:30
[expand - 4 more] - Re: Creating a branch for Pig on Spark (PIG-4059) - Pig - [mail # dev]
...The vote passed. Praveen and Mayur will be branch committers forPig-on-Spark. Once they have new ASF accounts, they will manage the branch.I'll create Spark branch shortly.On Tue, Aug 26, 20...
   Author: Cheolsoo Park, 2014-08-29, 16:14
[PIG-4135] Fetch optimization should be disabled if plan contains no limit - Pig - [issue]
...After deploying fetch optimization in production, a couple of users ran into this situation. They had fairly large input data, but after filtering it by a regular expression, it becomes smal...
http://issues.apache.org/jira/browse/PIG-4135    Author: Cheolsoo Park, 2014-08-21, 22:24
[PIG-4061] Make Streaming UDF work in Tez - Pig - [issue]
...PIG-3478 fixed Streaming UDF in MR2. We should get it working in Tez....
http://issues.apache.org/jira/browse/PIG-4061    Author: Cheolsoo Park, 2014-08-21, 17:59
[PIG-4124] Command for Python streaming udf should be configurable - Pig - [issue]
...In my cluster, multiple versions of python are installed such as python2.6, python2.7, etc. Since some modules are only available on non-default python versions, it would be nice if the pyth...
http://issues.apache.org/jira/browse/PIG-4124    Author: Cheolsoo Park, 2014-08-14, 21:59
[expand - 1 more] - Re: Creating a branch for mavenization (PIG-2599) - Pig - [mail # dev]
...Committed into branch "maven"-http://svn.apache.org/viewvc?view=revision&revision=1617782On Wed, Aug 13, 2014 at 8:26 AM, Cheolsoo Park  wrote: ...
   Author: Cheolsoo Park, 2014-08-13, 17:59
[PIG-4104] Accumulator UDF throws OOM in Tez - Pig - [issue]
...This is somewhat expected since we copy lots of object in POShuffleLoadTez for accumulator UDF. With large data, it consistently fails with OOM. We need to re-implement it.Here is an example...
http://issues.apache.org/jira/browse/PIG-4104    Author: Cheolsoo Park, 2014-08-12, 18:27
[PIG-4116] Update Pig doc about Hadoop 2 Streaming Python UDF support - Pig - [issue]
...PIG-3478 fixed Python UDF in Hadoop 2, but the Pig doc still says-Python UDFs are an experimental feature. It does not work with Hadoop 2....
http://issues.apache.org/jira/browse/PIG-4116    Author: Cheolsoo Park, 2014-08-11, 18:17
[PIG-4112] NPE in packager when union + group-by followed by replicated join in Tez - Pig - [issue]
...To reproduce the error, run the following query-A = load 'foo' as (id:int, fruit);B = load 'foo' as (id:int, fruit);C = union A, B;D = group C by id;E = load 'foo' as (id:int, fruit);F = joi...
http://issues.apache.org/jira/browse/PIG-4112    Author: Cheolsoo Park, 2014-08-11, 05:18
[PIG-4113] TEZ-1386 breaks hadoop 2 compilation in trunk - Pig - [issue]
...    [javac] /Users/cheolsoop/workspace/pig-apache/src/org/apache/pig/backend/hadoop/executionengine/tez/TezDagBuilder.java:599: error: no suitable method found for createMRInp...
http://issues.apache.org/jira/browse/PIG-4113    Author: Cheolsoo Park, 2014-08-10, 23:29
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