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Re: Java 7 and Pig, hijacked from PIG-2643 - Pig - [mail # dev]
...Last time I tried to run a Java 7 jar on a java 6 jvm, things blew up. This suggests to me that before Pig can use Java 7, Hadoop has to be able to (since hadoop spins out the jvm process th...
   Author: Dmitriy Ryaboy, 2012-04-16, 17:28
Re: Sum and count of fields - Pig - [mail # user]
...You can use Pig scalars to do this:  totals = foreach (group inputR all) {   f5s = distinct f5;   generate SUM(f4) as sum_f4, COUNT_STAR(f5s) as counts_f5;  results = for...
   Author: Dmitriy Ryaboy, 2012-04-15, 21:48
Re: Combining pig output - Pig - [mail # user]
...If you are just trying to get your data into a single file to copy to local fs, you can use hadoop fs -getmerge Pig does not give you such a hook explicitly. If you really want to, you can e...
   Author: Dmitriy Ryaboy, 2012-04-15, 21:44
Re: Pig 0.9.2 and HBaseStorage and HBaseBinaryConverter caster of a map - Pig - [mail # user]
...I think casters are currently not recursive for maps.  On Fri, Apr 13, 2012 at 3:55 PM, Neil Yalowitz  wro te: t ] is...
   Author: Dmitriy Ryaboy, 2012-04-13, 23:30
[expand - 1 more] - Re: FILTER and fields from tuple/bags - Pig - [mail # user]
...Could you type out the actual results you would like to see? I am not sure what you expect the results of " foreach rel GENERATE FIELD = ST, FIELD == ZIP, FIELD == AGE" to look like.  A...
   Author: Dmitriy Ryaboy, 2012-04-13, 23:28
Re: Profiling Pig Query - Pig - [mail # user]
...Hi Atul, I usually profile by running pig in local mode and connecting to it from yourkit (or whatever profiler you like best).  To understand what's happening on a live cluster, I don'...
   Author: Dmitriy Ryaboy, 2012-04-13, 00:12
Re: Join,Filter on the same line and optimization - Pig - [mail # user]
...Mohit, Pig does not run (or even consider running) a separate MR job for every line in the pig script. If you do a join and then filter, the filter will happen in the same MR job as the join...
   Author: Dmitriy Ryaboy, 2012-04-12, 17:03
Re: [jira] [Commented] (PIG-2065) IsEmpty should be Accumulative - Pig - [mail # dev]
...Cause if it's accumulative, the bag doesn't need to be loaded in ram to be c hecked for emptiness.   On Apr 11, 2012, at 10:55 AM, "Jonathan Coveney (Commented) (JIRA)"  wrote: &nb...
   Author: Dmitriy Ryaboy, 2012-04-11, 18:36
[expand - 1 more] - Re: Type mismatch in key from map - Pig - [mail # user]
...No, you can join on bytearrays. What can't be done is have pig thinking you are joining on bytearrays when you are actually using strings under the covers -- that's what causes the error you...
   Author: Dmitriy Ryaboy, 2012-04-11, 15:25
[expand - 1 more] - Re: LIMIT operator doesn't work with variables - Pig - [mail # user]
...Yeah, that would work.  10 should be released within weeks.  D  On Tue, Apr 10, 2012 at 2:42 PM, James Newhaven  wrote: t e t null ng set a:222)...
   Author: Dmitriy Ryaboy, 2012-04-10, 22:14
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