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Re: self cross doesn't work as expected - Pig - [mail # user]
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...It's not a bug, pig works in that way avoiding the field name conflict issue. You need to load the data twice when you do self join/group/cross. On 29 December 2012 12:44, Danfeng Li ...
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Author: TianYi Zhu,
2013-01-01, 22:40
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Re: ovoid "::" schema spec after join? - Pig - [mail # user]
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...Hi Yang, You can use the them without prefix if there's no conflict. Thanks, TianYi On Fri, Oct 12, 2012 at 9:31 AM, Yang wrote: ...
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Author: TianYi Zhu,
2012-10-11, 22:52
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Re: Optimizations in pig - Pig - [mail # user]
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...Hi Abhishek, http://archive.cloudera.com/cdh4/cdh/4/pig/perf.html http://ofps.oreilly.com/titles/9781449302641/making_pig_fly.html On Fri, Oct 5, 2012 at 8:18 AM, Abhishek ...
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Author: TianYi Zhu,
2012-10-04, 23:35
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Re: Pig question. - Pig - [mail # user]
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...Hi Jamal, you can write a UDF convert time between different time zones with following utilities, java.text.DateFormat; java.text.SimpleDateFormat; java.util.Date; java.util.Time...
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Author: TianYi Zhu,
2012-10-03, 23:21
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Re: Applying schemas after flatten? - Pig - [mail # user]
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...Hi Dave try C = FOREACH B generate(t.y, Flatten(t.CUSTS) AS (anothery:chararray, custbag:bag)); On Sat, Sep 8, 2012 at 8:41 AM, David Lapsley wrote: ...
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Author: TianYi Zhu,
2012-09-09, 23:21
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Re: Beginner. Help needed in getting started - Pig - [mail # user]
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...Hi Mohit, assuming you are using pig 0.9+, please check this link and learn how to write user defined functions in python: http://archive.cloudera.com/cdh4/cdh/4/pig/udf.html#python-ud...
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Author: TianYi Zhu,
2012-08-30, 04:51
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Re: updates using Pig - Pig - [mail # user]
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...Hi Srinivas, you can write a user defined function for this feed = union feed1, feed2; feed_grouped = group feed by trade-key; output = foreach feed_grouped generate flatten(your...
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Author: TianYi Zhu,
2012-08-28, 04:55
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