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Debugging UDFs - Pig - [mail # user]
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...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...
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Author: James Newhaven,
2013-04-13, 16:24
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Subtracting contents of two bags - Pig - [mail # user]
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...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...
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Author: James Newhaven,
2013-01-22, 12:46
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Re: UDF Performance Problem - Pig - [mail # user]
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...Thanks Dmitriy, all sorted now. James On Mon, Sep 3, 2012 at 6:21 PM, Dmitriy Ryaboy wrote: ...
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Author: James Newhaven,
2012-09-03, 20:31
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UDF Performance Problem - Pig - [mail # user]
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...Hi, I'd appreciate if anyone has some ideas/pointers regarding a pig script and custom UDF I have written. I've found it runs too slowly on my hadoop cluster to be useful....... ...
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Author: James Newhaven,
2012-09-03, 16:32
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Nested binary conditionals - Pig - [mail # user]
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...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...
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Author: James Newhaven,
2012-08-14, 16:02
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Using average function is really slow - Pig - [mail # user]
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...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...
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Author: James Newhaven,
2012-07-04, 17:37
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Pig script is failing during reduce phase - Pig - [mail # user]
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...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 ...
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Author: James Newhaven,
2012-06-18, 15:30
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Copying files to Amazon S3 using Pig is slow - Pig - [mail # user]
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...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...
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Author: James Newhaven,
2012-06-08, 11:40
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Saving files to HDFS - Pig - [mail # user]
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...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...
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Author: James Newhaven,
2012-06-07, 10:09
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Re: Losing ordering after using ORDER BY - Pig - [mail # user]
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...Thanks Jonathan. That worked fine. James On 29 May 2012, at 08:43 PM, Jonathan Coveney wrote: ...
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Author: James Newhaven,
2012-05-30, 21:10
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