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Re: Avro Backed Hive tables - Hive - [mail # user]
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...On 7 Mar 2013, at 2:43, Murtaza Doctor wrote: Hello, in that case it is advisable to start a new thread, and not 'reply-to' when you compose your email :-) Have a ni...
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Author: David Morel,
2013-03-12, 07:57
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Re: Cartesian product detection in the query plan? - Hive - [mail # user]
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...On 28 Jan 2013, at 17:58, Edward Capriolo wrote: Makes complete sense, I should have thought of it sooner. Thanks a lot! Well, I guess that answers the question. Thanks again :...
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Author: David Morel,
2013-01-28, 17:16
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Re: Cartesian product detection in the query plan? - Hive - [mail # user]
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...On 28 Jan 2013, at 14:29, Edward Capriolo wrote: hi Edward, Yes, that's indeed what the book claims (quoting): hive> SELECT * FROM fracture_act JOIN fracture_ad...
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Author: David Morel,
2013-01-28, 16:45
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Cartesian product detection in the query plan? - Hive - [mail # user]
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...Hi everyone, I had to kill some queries that were taking forever, and it turns out they were doing cartesian products (missing ON clause on a JOIN). I wonder how I could see that...
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Author: David Morel,
2013-01-28, 09:39
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Re: Whatever happened to the MACRO facility, Hive-2655 - Hive - [mail # user]
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...On 26 Jan 2013, at 14:59, Dean Wampler wrote: That's funny I was just about to post the same message :-) Came across it in the book on friday, announced it to my users like "hey...
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Author: David Morel,
2013-01-26, 21:02
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Re: Real-life experience of forcing smaller input splits? - Hive - [mail # user]
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...On 25 Jan 2013, at 10:37, Bertrand Dechoux wrote: That will be my approach for now, or disabling compression altogether for these files. The only problem I have is that compress...
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Author: David Morel,
2013-01-25, 12:28
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Re: Real-life experience of forcing smaller input splits? - Hive - [mail # user]
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...On 25 Jan 2013, at 10:37, Bertrand Dechoux wrote: The files are RCFiles with a block size of 128MB IIRC, but the file compression achieves a ratio of nearly 1 to 100. When going throu...
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Author: David Morel,
2013-01-25, 09:53
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Re: An explanation of LEFT OUTER JOIN and NULL values - Hive - [mail # user]
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...On 24 Jan 2013, at 20:39, [EMAIL PROTECTED] wrote: Really not the case, no, so it doesn't make any sort of sense to me :\ At this point I am starting to think the only way to figure i...
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Author: David Morel,
2013-01-25, 06:34
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Real-life experience of forcing smaller input splits? - Hive - [mail # user]
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...Hello, I have seen many posts on various sites and MLs, but didn't find a firm answer anywhere: is it possible yes or no to force a smaller split size than a block on the mappers, from...
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Author: David Morel,
2013-01-25, 06:16
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Re: An explanation of LEFT OUTER JOIN and NULL values - Hive - [mail # user]
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...On 24 Jan 2013, at 18:16, [EMAIL PROTECTED] wrote: Hi Bejoy, Thanks! So schematically, something like this, right? mapper1 (bigger table): K1-A, V1A K2-A, V2A K3-A, V3A &n...
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Author: David Morel,
2013-01-24, 17:39
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