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RE: How to pass arguments to PigScript; + How to compare data atoms within pig script - Pig - [mail # user]
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...The pig script should be the last argument in your command line, i.e., bash$ java -cp $CLASSPATH/pig.jar:$HADOOPSITEPATH org.apache.pig.Main -param string=sample sear...
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Author: Santhosh Srinivasan,
2008-10-05, 03:39
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RE: How to pass arguments to PigScript; + How to compare data atoms within pig script - Pig - [mail # user]
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...Use parameter substitution - http://wiki.apache.org/pig/ParameterSubstitution Santhosh From: Latha [mailto:[EMAIL PROTECTED]] Sent: Saturday, October 04, 2008 6:33 PM To: ...
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Author: Santhosh Srinivasan,
2008-10-05, 01:48
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RE: Semantics of generate * - Pig - [mail # dev]
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...[Santhosh] Yes, a visitor is probably a cleaner way to do the translation. The question: is the inability to return multiple projections from one production a limit of how...
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Author: Santhosh Srinivasan,
2008-10-03, 18:49
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Semantics of generate * - Pig - [mail # dev]
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...In the current implementation of generate * in the front end, a single projection operator with the star attribute set to true is created. During the schema computation, instead of generatin...
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Author: Santhosh Srinivasan,
2008-10-02, 23:41
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Flattening bags and tuples without a known schema - Pig - [mail # dev]
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...This email discusses a use case of flattening a bag or tuple when the schema of the bag or tuple is not known, i.e., null. When UDFs return bags or tuples (complex type), the schema of...
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Author: Santhosh Srinivasan,
2008-08-29, 16:49
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RE: UDFs and types - Pig - [mail # dev]
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...Paolo [CC'ed] observed that currently, if the return type of the UDF is a bag or a tuple, the contents of the bag/tuple is not known at type checking time. In addition to the input parameter...
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Author: Santhosh Srinivasan,
2008-07-07, 19:10
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RE: Question on the LogicalPlanTester - Pig - [mail # dev]
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...Bags have schemas. The schema of the bag is the schema of the tuple inside the bag. Pi is correct when he says "...doesn't output Bag fields with tuples wrapped inside but Bag with schema in...
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Author: Santhosh Srinivasan,
2008-06-20, 17:03
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RE: Dealing with empty data bags - Pig - [mail # user]
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...Chris, Did you mean unordered when you said "A bag is an ordered multiset of tuples." Further down you say "because "bag" implies unordered". Santhosh From: Chris Olston [m...
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Author: Santhosh Srinivasan,
2008-06-06, 17:23
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RE: Problem with "GROUP" reserved word - Pig - [mail # dev]
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...Pi, Let me check it out. The implicit alias 'group' in a group/cogroup works. However, I have seen when 'group' is used as an explicit alias, I have seen parser errors. I just saw your...
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Author: Santhosh Srinivasan,
2008-06-04, 14:29
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RE: Using PARALLEL clause for nested operations - Pig - [mail # user]
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...It's a syntactically correct statement in QueryParser. However, the pig statement is shipped to QueryParser via Grunt which does not expect the PARALLEL keyword. There are two parsers you ar...
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Author: Santhosh Srinivasan,
2008-05-21, 17:57
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