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[PIG-3847] Sort avoidance for group by and join - Pig - [issue]
...Group by and join only require that the records be grouped together by key. It is not necessary for the keys to be sorted. If we can have a Tez Input/Output implementation that does the grou...
http://issues.apache.org/jira/browse/PIG-3847    Author: Rohini Palaniswamy, 2014-05-30, 20:16
[PIG-3848] Dynamically switch to replicate join - Pig - [issue]
...   If data sizes are found to be small after filtering then switch to replicate join dynamically if user has not specified "using" clause explicitly. But this required support from...
http://issues.apache.org/jira/browse/PIG-3848    Author: Rohini Palaniswamy, 2014-05-30, 20:16
[PIG-3849] Optimize group by followed by join on the same key - Pig - [issue]
... This can be done in one vertex with multiple inputs instead of having an extra vertex to do the join. i.e Currently Vertex 1 (load relation1) > Vertex 2 (group by) -> Vertex 4 (j...
http://issues.apache.org/jira/browse/PIG-3849    Author: Rohini Palaniswamy, 2014-05-30, 20:16
[PIG-3850] Optimize join followed by order by using same key - Pig - [issue]
...Possible optimizations:    1) If it is a skewed join, then we can combine ordering into it instead of doing a additional orderby as we skewed join already involves sampling.&n...
http://issues.apache.org/jira/browse/PIG-3850    Author: Rohini Palaniswamy, 2014-05-30, 20:16
[PIG-3852] Remove SecurityHelper class for Tez and use Tez helpers instead - Pig - [issue]
...TEZ jira have been created to support mapreduce.job.hdfs-servers and mapreduce.job.credentials.binary. So we can get rid of SecurityHelper.java written for Pig on Tez....
http://issues.apache.org/jira/browse/PIG-3852    Author: Rohini Palaniswamy, 2014-05-30, 20:15
[PIG-3856] UnionOptimizer in Tez should optimize the case of replicated join - Pig - [issue]
...Replicate join input that was broadcast to union vertex now needs to be broadcast to all the union predecessors. So we need to Create edges from the Replicate join input to all the union pre...
http://issues.apache.org/jira/browse/PIG-3856    Author: Rohini Palaniswamy, 2014-05-30, 20:15
[expand - 1 more] - Re: Review Request 22058: Merge Tez branch into trunk - Pig - [mail # dev]
...I also did verify the difference between tez branch and trunk after applying this patch using DeltaWalker. Only build.xml was different (Tez branch had tez exectype and hadoop23 as default w...
   Author: Rohini Palaniswamy, 2014-05-30, 17:56
[PIG-3891] FileBasedOutputSizeReader does not calculate size of files in sub-directories - Pig - [issue]
...FileBasedOutputSizeReader only includes files in the top level output directory. So if files are stored under subdirectories (For eg: MultiStorage), it does not have the bytes written correc...
http://issues.apache.org/jira/browse/PIG-3891    Author: Rohini Palaniswamy, 2014-05-30, 01:53
Re: Review Request 21979: PIG-3955 Remove url.openStream() file descriptor leak from JCC - Pig - [mail # dev]
...I don't see FileInputStream implement reset(). Does it work?- RohiniThis is an automatically generated e-mail. To reply, visit:https://reviews.apache.org/r/21979/#review44125On May 28, 2014,...
   Author: Rohini Palaniswamy, 2014-05-28, 16:55
[PIG-3456] Reduce threadlocal conf access in backend for each record - Pig - [issue]
...Noticed few things while browsing code1) DefaultTuple has a protected boolean isNull = false; which is never used. Removing this gives ~3-5% improvement for big jobs2) Config checking with T...
http://issues.apache.org/jira/browse/PIG-3456    Author: Rohini Palaniswamy, 2014-05-27, 23:18
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