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Debugging UDFs - Pig - [mail # user]
...I have defined a pig UDF want to track problems using warnings like this:  warn("My warning", PigWarning.UDF_WARNING_1);  I'm testing this in local mode first, but I never see this...
   Author: James Newhaven, 2013-04-13, 16:24
Subtracting contents of two bags - Pig - [mail # user]
...Hi,  I have two relations - A and B.  Both just contain user ids.  I want to get a list of users who are in A but not in B.  I am running Pig 0.9.1 and think this might b...
   Author: James Newhaven, 2013-01-22, 12:46
Re: UDF Performance Problem - Pig - [mail # user]
...Thanks Dmitriy, all sorted now.  James  On Mon, Sep 3, 2012 at 6:21 PM, Dmitriy Ryaboy  wrote:  ...
   Author: James Newhaven, 2012-09-03, 20:31
Nested binary conditionals - Pig - [mail # user]
...Has anyone had success nesting conditional statements?  I am trying to implement a standard if, else if, else if statement without success.  e.g.  A = FOREACH B GENERATE (cond...
   Author: James Newhaven, 2012-08-14, 16:02
Using average function is really slow - Pig - [mail # user]
...Hi,  I am using the built-in org.apache.pig.builtin.AVG function. I have a set of 100,000 items that I want to average.  The relevant pig latin is below:   L = FOREACH K GENER...
   Author: James Newhaven, 2012-07-04, 17:37
Pig script is failing during reduce phase - Pig - [mail # user]
...Hi,  I am executing a Pig script on Elastic MapReduce. It runs fine over one day's worth of data, but when I increase my dataset size to 30 days, the reducers have started failing with ...
   Author: James Newhaven, 2012-06-18, 15:30
Copying files to Amazon S3 using Pig is slow - Pig - [mail # user]
...I want to copy 26,000 HDFS files generated by a pig script to Amazon S3.  I am using the copyToLocal command, but I noticed the copy throughput is only one file per second - so it is go...
   Author: James Newhaven, 2012-06-08, 11:40
Saving files to HDFS - Pig - [mail # user]
...I have a pig script that creates tuples containing JSON.  I want to save the content of each tuple to a separate file e.g. file1.json to HDFS.  So, my question is, is it possible t...
   Author: James Newhaven, 2012-06-07, 10:09
Re: Losing ordering after using ORDER BY - Pig - [mail # user]
...Thanks Jonathan. That worked fine.  James    On 29 May 2012, at 08:43 PM, Jonathan Coveney  wrote:  ...
   Author: James Newhaven, 2012-05-30, 21:10
Summing the contents of a bag - Pig - [mail # user]
...Given a relation that contains this:  ({(11),(9)}) ({(8),(7)})  Is it possible for me to SUM the contents of each bag so I get: (20) (15)  Thanks, James...
   Author: James Newhaven, 2012-05-28, 22:40
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