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Re: adding filenames as new columns via Hive - Hive - [mail # user]
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...Yeah, udfs are better semantically. Will this be a problem for partition pr uning? ________________________________ From: Ashish Thusoo Reply-To: Date: Wed, 16 Sep 2009 12...
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Author: Prasad Chakka,
2009-09-16, 19:14
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Re: adding filenames as new columns via Hive - Hive - [mail # user]
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...FYI, all partition columns can be used as any regular columns select querie s. So it should be fine. ________________________________ From: Avram Aelony Reply-To: Date: We...
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Author: Prasad Chakka,
2009-09-16, 18:33
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Re: adding filenames as new columns via Hive - Hive - [mail # user]
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...I think this can be a good feature though I would like the filename to be a partition column (one of such) instead of a separate type of column. Would that work? create ext...
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Author: Prasad Chakka,
2009-09-16, 18:10
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Re: hive queries over tables in different formats - Hive - [mail # user]
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...Yes, it should. ________________________________ From: Abhijit Pol Reply-To: Date: Wed, 16 Sep 2009 11:04:24 -0700 To: Subject: hive queries over tables in different...
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Author: Prasad Chakka,
2009-09-16, 18:06
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Re: Problems using hive JDBC driver on Windows (with Squirrel SQL Client) - Hive - [mail # user]
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...SerDe may be needed to deserialize the result from Hive server. But I also thought the results are in delimited form (LazySimpleSerDe or MetadataTyped ColumnSetSerDe or something like ...
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Author: Prasad Chakka,
2009-09-16, 05:59
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Re: General design/schema question - Hive - [mail # user]
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...A partitioned table has a set of partition keys. Check wiki on how to creat e partitioned table. In your case you can one partition key named 'ds' (dat estamp). You can choose any format for...
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Author: Prasad Chakka,
2009-09-11, 20:22
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Re: General design/schema question - Hive - [mail # user]
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...You should create a daily partition table. So you just need to create a new partition which is automatic if you use 'LOAD DATA... INTO TABLE ... PARTI TION (ds='2009-09-01')' Pra...
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Author: Prasad Chakka,
2009-09-11, 19:26
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[HIVE-210] Refactor HiveConf variables into two categories (query and session level) - Hive - [issue]
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...Created while fixing HIVE-84.Most of variables in HiveConf fall into two distinct categories: valid only for a job (job name, id etc) and valid across sessions and jobs. So it may be good id...
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http://issues.apache.org/jira/browse/HIVE-210
Author: Prasad Chakka,
2009-09-10, 06:41
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Re: Files does not exist error: concurrency control on hive queries... - Hive - [mail # user]
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...Yeah, metastore db is logical place to do locking but there have to be periodic cleanups (when clients die without releasing locks) etc which is hacky so less preferrable. Another option is ...
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Author: Prasad Chakka,
2009-09-09, 21:49
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Re: Files does not exist error: concurrency control on hive queries... - Hive - [mail # user]
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...I thought your script runs the two job sequentially. If these two queries are run in parallel then the error can be expected since Hive doesn’t try to acquire locks before reading or writing...
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Author: Prasad Chakka,
2009-09-09, 19:52
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