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Re: Automating the partition creation process - Hive - [mail # user]
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...This is very easy to do with a shell script and you can have cron run it nightly, say just after midnight so the year, month, and day calculation below return the correct values: #!/bi...
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Author: Dean Wampler,
2013-01-29, 16:37
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Re: A few JIRAs closed in v0.10.0 that don't actually appear to be working - Hive - [mail # user]
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...Thanks! On Tue, Jan 29, 2013 at 5:34 AM, Navis류승우 wrote: *Dean Wampler, Ph.D.* thinkbiganalytics.com +1-312-339-1330...
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Author: Dean Wampler,
2013-01-29, 15:18
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Re: A few JIRAs closed in v0.10.0 that don't actually appear to be working - Hive - [mail # user]
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...Oh, another one is https://issues.apache.org/jira/browse/HIVE-446 - Implement TRUNCATE. The CLI doesn't recognize it. dean On Mon, Jan 28, 2013 at 11:44 AM, Dean Wamp...
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Author: Dean Wampler,
2013-01-28, 17:57
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A few JIRAs closed in v0.10.0 that don't actually appear to be working - Hive - [mail # user]
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...I've noticed a few JIRA items for new features that are supposed to work in v0.10.0, but don't appear to actually work: https://issues.apache.org/jira/browse/HIVE-3066 - Add the option...
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Author: Dean Wampler,
2013-01-28, 17:44
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Re: Cartesian product detection in the query plan? - Hive - [mail # user]
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...By the way, v0.10.0 adds a new CROSS JOIN feature, when you really intended to do one ;) SELECT a.x, b.y FROM tablea a CROSS JOIN tableb b; On Mon, Jan 28, 2013 at 10:58 A...
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Author: Dean Wampler,
2013-01-28, 17:05
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Re: Whatever happened to the MACRO facility, Hive-2655 - Hive - [mail # user]
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...Great! It would be nice to have. dean On Sat, Jan 26, 2013 at 10:30 AM, Edward Capriolo wrote: *Dean Wampler, Ph.D.* thinkbiganalytics.com +1-312-339-1330...
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Author: Dean Wampler,
2013-01-26, 19:00
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Whatever happened to the MACRO facility, Hive-2655 - Hive - [mail # user]
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...We mentioned it in our book and now I realize it's not actually implemented, even in 0.10.0. OOPS!! https://issues.apache.org/jira/browse/HIVE-2655 dean *Dean Wampler, Ph.D...
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Author: Dean Wampler,
2013-01-26, 13:59
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Re: querying objects and list fields - Hive - [mail # user]
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...Use size instead of count. Count is for counting rows, while size is for determining the size of a collection. For the second question, I think you'll need to call explode on the...
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Author: Dean Wampler,
2013-01-25, 13:45
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Re: Real-life experience of forcing smaller input splits? - Hive - [mail # user]
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...... You can still use compression if you use a splittable format, like bzip2 with block compression. Gzip isn't splittable. If you're running out of memory, you could also increa...
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Author: Dean Wampler,
2013-01-25, 13:39
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Re: Loading a Hive table simultaneously from 2 different sources - Hive - [mail # user]
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...You'll face all the usual concurrency synchronization risks if you're updating the same "place" concurrently. One thing to keep in mind; it's all just HDFS under the hood. That pretty much t...
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Author: Dean Wampler,
2013-01-24, 16:03
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