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Re: how to use builtin String functions - Pig - [mail # user]
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...Thanks. Somehow, it's not recognizing these functions. grunt> *DUMP A;* (a-b-c,1) (x-y,2) (z,3) grunt> *DESCRIBE A;* A: {code: chararray,v: int} grunt> *B = FOREACH A GE...
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Author: Dexin Wang,
2011-01-14, 01:38
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how to use builtin String functions - Pig - [mail # user]
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...I see there are some builtin string functions, but I don't know how to use them. I got this error when I follow the examples: grunt> REGEX_EXTRACT_ALL('192.168.1.5:8020', '(.*)\:(.*...
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Author: Dexin Wang,
2011-01-13, 01:43
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Re: wild card for all fields in a tuple - Pig - [mail # user]
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...Yeah, that works great. Thanks Jonathan and Alan. I can see that all fields in between feature will be totally useful for some cases. On Wed, Jan 12, 2011 at 3:33 PM, Alan Gates ...
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Author: Dexin Wang,
2011-01-12, 23:44
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wild card for all fields in a tuple - Pig - [mail # user]
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...Hi, Hope there is some simple answer to this. I have bunch of rows, for each row, I want to add a column which is derived from some existing columns. And I have large number of columns...
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Author: Dexin Wang,
2011-01-12, 22:51
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Re: FLATTEN eats null rows? - Pig - [mail # user]
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...Thanks. Both worked fine. I think I'll make a MyFlatten that doesn't drop the empty bag. Say you want to COGROUP 3 or more bags, you would have to do a many COGROUP or JOIN, then do Is...
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Author: Dexin Wang,
2010-12-31, 04:02
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FLATTEN eats null rows? - Pig - [mail # user]
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...Seems after FLATTEN, the rows with null values get dropped. I have two test files: % cat test1.txt 1 a b 2 c d 3 e f % cat test2.txt 1 x 2 y 6 z 8 w I'm trying to cog...
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Author: Dexin Wang,
2010-12-31, 00:35
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Re: set reducer timeout with pig - Pig - [mail # user]
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...It doesn't seem to work. I got 2010-12-22 21:36:59,120 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1000: Error during parsing. Unrecognized set key: mapred.task.timeout ...
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Author: Dexin Wang,
2010-12-23, 03:38
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set reducer timeout with pig - Pig - [mail # user]
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...Hi, How do I change the default timeout for reducer with Pig? I have some reducer that needs to take longer than 10 minutes to finish. It is pretty frustrating to see many of get to 95...
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Author: Dexin Wang,
2010-12-21, 21:23
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Re: increment counters in Pig UDF - Pig - [mail # user]
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...Perfect. Thanks. On Dec 16, 2010, at 7:41 AM, Dmitriy Ryaboy wrote: rs...
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Author: Dexin Wang,
2010-12-16, 17:07
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increment counters in Pig UDF - Pig - [mail # user]
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...Is it possible to increment a counter in Pig UDF (in either Load/Eval/Store Func). Since we have access to counters using the org.apache.hadoop.mapred.Reporter: http://hadoop.apa...
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Author: Dexin Wang,
2010-12-16, 01:17
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