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UDF casting failures on nested maps/objects. - Pig - [mail # user]
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...Hi, I've got some objects originally loaded, using the JSON loader from elephantbird, into nested maps, and subsequently stored using LZOPigStorage after various stages of processing. ...
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Author: Kris Coward,
2013-05-07, 17:05
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Re: What is wrong with my input path? - Pig - [mail # user]
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...Simple non-pig sanity check: Are you sure that the shell you're using to launch your pig script isn't trying to do its own wildcard expansion on your parameter before passing it to pig...
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Author: Kris Coward,
2013-03-21, 07:20
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Re: UDF that takes bag as input and returns another bag - Pig - [mail # user]
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...But he asked for a function that returns *another* bag ;) Snark aside, when returning bags or tuples, it's also worthwhile to at least consider also defining the output schema, which f...
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Author: Kris Coward,
2013-03-18, 14:24
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Re: Behaviour on a failed cast. - Pig - [mail # user]
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...The cast in question was a bytearray to a map (while referencing a value inside a nested object loaded using JsonLoader), which was failing because a previous glitch in upstream infrastructu...
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Author: Kris Coward,
2013-02-01, 17:56
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Re: Escaping Dollar Sign in Map in Pig 0.10 - Pig - [mail # user]
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...I've encountered the difference myself, and find that it helps immensely to run pig -r on the script instead of cat, before cutting and pasting it, so it'll strip the \ off of the $ when it ...
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Author: Kris Coward,
2013-01-15, 23:27
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Behaviour on a failed cast. - Pig - [mail # user]
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...Hi, I remember a while back that there was a setting introduced to allow a pig job to either insert a null, or drop a row, instead of aborting execution, when a cast failed. Of course,...
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Author: Kris Coward,
2013-01-12, 00:04
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Storing dates in LzoJsonStorage - Pig - [mail # user]
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...Hi, I'm working on a pig script (and some associated UDFs) to do a little cleaning on some data, stored as JSON objects, being used by other scripts down the pipe. The JSON objects con...
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Author: Kris Coward,
2012-12-18, 21:19
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Failing to make sense of an error. - Pig - [mail # user]
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...Hi, I've been compiling some top 25 lists for the frequency with which values appear in certain columns in a relation, and based on some of the counts, am curious to see if some of the...
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Author: Kris Coward,
2012-11-28, 16:30
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Re: Group by Fetching top 100 from each group - Pig - [mail # user]
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...Yes, that is indeed better. On Fri, Jun 29, 2012 at 06:39:58PM -0700, Jonathan Coveney wrote: Kris Coward http://unripe.melon.org/ GPG Fingerprint: 2BF3 957D 310A FEEC 4733 &...
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Author: Kris Coward,
2012-06-30, 04:47
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Re: Group by Fetching top 100 from each group - Pig - [mail # user]
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...LIMIT and ORDER BY are both allowed nested ops for a FOREACH statement. These should be able to do what you want. e.g. B = GROUP A BY key C = FOREACH B { X = ORDER...
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Author: Kris Coward,
2012-06-30, 00:02
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