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Re: Re: create a hive table: always a tab space before each line - Hive - [mail # user]
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...Hadoop supports Sequence Files natively. Hadoop the Definitive Guide discusses the details. dean On Mon, Jan 14, 2013 at 8:58 AM, Richard wrote: *Dean Wampler,...
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Author: Dean Wampler,
2013-01-14, 15:56
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Re: Best practice for automating jobs - Hive - [mail # user]
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...If you know make and bash, have a look at Stampede for scheduling work: https://github.com/ThinkBigAnalytics/stampede (Full disclosure: I wrote it) On Thu, Jan 10, 2013 at...
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Author: Dean Wampler,
2013-01-10, 22:30
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Re: Stack function in Hive : how to specify multiple aliases? - Hive - [mail # user]
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...Try "as (alias1, alias2, ...)" On Thu, Jan 10, 2013 at 3:42 AM, Mathieu Despriee wrote: *Dean Wampler, Ph.D.* thinkbiganalytics.com +1-312-339-1330...
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Author: Dean Wampler,
2013-01-10, 14:13
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Re: create a hive table: always a tab space before each line - Hive - [mail # user]
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...To add to what Nitin said, there is no key output by Hive in front of the tab. On Wed, Jan 9, 2013 at 3:07 AM, Nitin Pawar wrote: *Dean Wampler, Ph.D.* thinkbiganal...
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Author: Dean Wampler,
2013-01-09, 14:38
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Re: Map Reduce Local Task - Hive - [mail # user]
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...That setting will make Hive more aggressive about trying to convert a join to a local task, where it bypasses the job tracker. When you're experimenting with queries on a small data set, it ...
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Author: Dean Wampler,
2013-01-08, 15:59
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Re: Does Hue (Hadoop User Experience) works with Apache HIVE/HADOOP - Hive - [mail # user]
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...If you're willing to consider a commercial option, Karmasphere is already supported on EMR. http://aws.amazon.com/elasticmapreduce/karmasphere/ On Sat, Dec 29, 2012 at 1:29 AM, C...
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Author: Dean Wampler,
2012-12-29, 15:18
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Re: hive regular expression - Hive - [mail # user]
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...Hive uses Java's regex API. This tutorial provides an excellent introduction. http://docs.oracle.com/javase/tutorial/essential/regex/ dean On Wed, Dec 26, 2012 at 12:46 PM,...
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Author: Dean Wampler,
2012-12-26, 18:50
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Re: Reflect MySQL updates into Hive - Hive - [mail # user]
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...Looks good, but a few suggestions. If you can eliminate duplicates, etc. as you ingest the data into HDFS, that would eliminate a cleansing step. Note that if the target directory in HDFS IS...
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Author: Dean Wampler,
2012-12-24, 18:12
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Re: Reflect MySQL updates into Hive - Hive - [mail # user]
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...This is not as hard as it sounds. The hardest part is setting up the incremental query against your MySQL database. Then you can write the results to new files in the HDFS directory for the ...
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Author: Dean Wampler,
2012-12-24, 14:51
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Re: Creating external table poiting to s3 folder with files not loading data - Hive - [mail # user]
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...You raise an important point; "metadata" commands like create table and alter table only affect metadata, not the actual data itself. So, you have to write the files into the partition direc...
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Author: Dean Wampler,
2012-12-17, 15:07
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