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how to know which part of the explain plan my MR job is running? - Pig - [mail # user]
...>From the JT you can open the job confs and search for pig.alias and pig.feature (from memory).  Or you can start you pig script with Ambrose, which will launch a web UI that shows s...
   Author: Bill Graham , 2012-06-24, 16:42
error with FLATTEN and nested generate - Pig - [mail # user]
...Try replacing MIN(xx.x); with MIN(xx::x);  The xx.x syntax returns a scalar IF the xx relationship only has one tuple. If it doesn't it fails. The xx::x syntax refers to the x values in...
   Author: Bill Graham , 2012-06-21, 04:09
[expand - 1 more] - Persisting Pig Scripts - Pig - [mail # dev]
...That's expected. It's a cap on the size of how much of the script can be stored. I'm not sure what the exact size limit is though, but if it's causing issues I'm sure we could make it a conf...
   Author: Bill Graham , 2012-06-11, 22:01
number of reducers - Pig - [mail # user]
...What version of Pig are you running, and if it's not the trunk can you try with the trunk?  There have been a number of improvements to how we get total input size when estimating reduc...
   Author: Bill Graham , 2012-06-01, 16:55
[expand - 1 more] - Re: why pig did not compile contrib directory during "ant jar"? How to compile contrib directory? - Pig - [mail # user]
...The contrib directories are where the source of the various contribs live. You only need to compile them if you plan to use a given contrib.  Piggybank is a collection of useful UDFs: h...
   Author: Bill Graham , 2012-05-23, 05:11
[expand - 1 more] - Is there a good benchmark to evaluate the CPU time/space tradeoff in the shuffle stage of hadoop? - Pig - [mail # dev]
...True, to capture the network effect you'll need to run MR on a cluster.  On Tue, May 22, 2012 at 8:57 PM, Jonathan Coveney wrote:  > But you don't capture the nature of the spee...
   Author: Bill Graham , 2012-05-23, 05:03
Review Request: Pig creates too many instances of Load and Store Funcs. It should be 1 in the front-end and 1 in the backend - Pig - [mail # dev]
...----------------------------------------------------------- This is an automatically generated e-mail. To reply, visit: https://reviews.apache.org/r/5159/#review8026 ------------------------...
   Author: Bill Graham , 2012-05-22, 04:46
User survey: Where are all the UDFs and Macros? - Pig - [mail # user]
...DataFu:  https://github.com/linkedin/datafu   On Tue, May 15, 2012 at 6:35 PM, Russell Jurney wrote:  > Most Pig UDF development has moved away from Piggybank. I want to &g...
   Author: Bill Graham , 2012-05-16, 04:32
How to combine muliple group by - Pig - [mail # user]
...You can combine multiple relations using the UNION operator. If you're trying to combine logic, you can use a macro to do e2-e5 below that takes (e1, empid) or (e1, group). See the example h...
   Author: Bill Graham , 2012-05-15, 15:00
[PIG-2701] Pig-Guice integration - Pig - [issue]
...As Pig becomes more customizable (PPNLs, ReducerEstimators, Optimizers?), the current approach of loading custom classes via class params and reflection can become clunky. This is especially...
http://issues.apache.org/jira/browse/PIG-2701    Author: Bill Graham , 2012-05-14, 23:07