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Re: order by throwing exception in cluster - Pig - [mail # user]
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...The exception stack has LocalJobRunner, that is strange. Have you specified the cmd line option "-x mapreduce" ? Is the hadoop conf dir in class path? -Thejas On 5/13/11 1...
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Author: Thejas M Nair,
2011-05-13, 23:13
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Re: Order By Sampling - Pig - [mail # user]
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...The sampling algorithm for order-by samples 100 records from every map task , using a reservoir sampling algorithm. I can't think of a way to store data that could adversely affect this samp...
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Author: Thejas M Nair,
2011-05-06, 19:33
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Re: cannot cast issue: Pig filter against flatten column - Pig - [mail # user]
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...Are you also using CassandraStorage? Can you paste the entire stack trace ? It seems CassandraStorage is returning a DataByteArray instead of String, c an you try declaring the schema ...
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Author: Thejas M Nair,
2011-04-29, 00:43
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Re: How to improve the performs of PIG Join - Pig - [mail # user]
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...Here is the (theoretical) rule of thumb for replicated join : for replicated join to perform significantly better than default join, the size of the replicated input should be sm...
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Author: Thejas M Nair,
2011-04-19, 15:41
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Re: How to improve the performs of PIG Join - Pig - [mail # user]
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...For default join (hash join) - - Increasing the parallelism of the default join should speed it up. - Put the table which has large number of tuples per key as the last table in join . (Yes,...
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Author: Thejas M Nair,
2011-04-18, 23:33
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Re: COUNT sometimes returning a float value? - Pig - [mail # user]
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...This is strange. Looking at COUNT code, there does not seem to be anyway it could return a float. Do you have some example data/query that can be used to reproduce this ? Can you paste...
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Author: Thejas M Nair,
2011-04-16, 00:13
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Re: Error when running Pig from source code. - Pig - [mail # dev]
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...To make the eclipse configuration easier, you can do this before you add th e project in eclipse. It will set the .classpath file used by eclipse appro priately - Apply the patch PIG-1...
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Author: Thejas M Nair,
2011-04-13, 18:40
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Re: Getting errors with BinSedesTuple in my storefunc - Pig - [mail # user]
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...Bytearray datatype also represents the 'unkown' type. Ie if pig does not kn ow the type for a field, it uses the bytearray type. In such cases the actu al object will not be an instance of D...
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Author: Thejas M Nair,
2011-04-08, 20:35
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Re: Internal error 2999 - misuse of CONCAT? misuse of GROUP? - Pig - [mail # user]
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...This feature/syntax seems be causing confusion in many cases , so I have pr oposed deprecating this syntax in the next release . See - https://issues.apache.org/jira/browse/PIG-1967 . ...
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Author: Thejas M Nair,
2011-04-06, 19:42
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Re: Internal error 2999 - misuse of CONCAT? misuse of GROUP? - Pig - [mail # user]
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...In the relation TCRaw, there is no column called SrcFuid. As a result, you end up using this feature - http://pig.apache.org/docs/r0.8.0/piglatin_ref2.html#Casting+Relations+to+S c alars . &...
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Author: Thejas M Nair,
2011-04-06, 19:30
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