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Re: mapper is slower than hive' mapper - Hive - [mail # user]
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...Hive does not use combiners it uses map side aggregation. Hive does use writables, sometimes it uses ones from hadoop, sometimes it uses its own custom writables for things like timestamps. ...
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Author: Edward Capriolo,
2012-08-01, 15:49
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Re: mapper is slower than hive' mapper - Hive - [mail # user]
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...As mentioned, if you avoid using new, by re-using objects and possibly use buffer objects you may be able to match or beat the speed. But in the general case the hive saves you time by allow...
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Author: Edward Capriolo,
2012-08-01, 15:13
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[HIVE-3238] A table generating, table generating function - Hive - [issue]
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...Often times you create small text files to test something. This UDTF makes that easy....
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http://issues.apache.org/jira/browse/HIVE-3238
Author: Edward Capriolo,
2012-07-31, 16:42
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Re: Is HiveMetastoreClient threadsafe? - Hive - [mail # dev]
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...manipulate the underlying protocol. This is true with Cassandra's thrift client for sure. On Mon, Jul 30, 2012 at 2:25 PM, Francis Liu wrote:...
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Author: Edward Capriolo,
2012-07-31, 04:06
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Re: non map-reduce for simple queries - Hive - [mail # dev]
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...If where condition is too complex , selecting specific columns seems simple enough and useful. On Saturday, July 28, 2012, Namit Jain wrote: map-reduce jobs for the following que...
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Author: Edward Capriolo,
2012-07-28, 21:41
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Re: Fwd: High availability with hive - Hive - [mail # user]
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...Datastax backends the hive metastore into Cassandra making it highly available, an open sourced Brisk did this originally but the technology was not actively maintained. Edward O...
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Author: Edward Capriolo,
2012-07-27, 19:15
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Re: Performance Issues in Hive with S3 and Partitions - Hive - [mail # user]
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...Use a different partitioning scheme or consider using clustered / bucketed tables. On 7/27/12, [EMAIL PROTECTED] wrote:...
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Author: Edward Capriolo,
2012-07-27, 19:02
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Re: /apache/hive/bin/hive: line 107: [: too many arguments error - Hive - [mail # user]
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...That issue likely means there are more command line arguments then your shell will tolerate. We have several tickets open to get hive 100 % compatible with windows. Look though the open jira...
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Author: Edward Capriolo,
2012-07-27, 19:01
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Re: Group By with rollup in HiveQL? - Hive - [mail # user]
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...I would just do a query that produces multiple outputs or select that data into a table and roll that up. On Thursday, July 26, 2012, Bejoy Ks wrote: development is in progress f...
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Author: Edward Capriolo,
2012-07-26, 15:05
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Re: Custom UDF can not handle constant string parameter - Hive - [mail # dev]
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...Compare your code to the ascii udf and then make your code more ascii like :) On Wed, Jul 25, 2012 at 5:14 PM, Ablimit Aji wrote:...
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Author: Edward Capriolo,
2012-07-25, 21:53
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