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[HIVE-3669] Support queries in which input tables of correlated MR jobs involves intermediate tables - Hive - [issue]
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...Correlation optimizer implemented in HIVE-2206 does not optimize correlated MapReduce jobs which have intermediate tables as input.Here is an example originally posted in HIVE-3430select * f...
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http://issues.apache.org/jira/browse/HIVE-3669
Author: Yin Huai,
2012-11-05, 15:03
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[HIVE-3668] Merge MapReduce jobs which share input tables and the same partitioning keys into a single MapReduce job - Hive - [issue]
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...In the plan of a query, if there exists MapReduce jobs created for aggregation operators or join operators which share one or more input tables and use the same partitioning keys to shuffle ...
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http://issues.apache.org/jira/browse/HIVE-3668
Author: Yin Huai,
2012-11-05, 14:49
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[HIVE-3667] Umbrella jira for Correlation Optimizer - Hive - [issue]
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...This is an umbrella jira to track work related to Correlation Optimizer (originally proposed in HIVE-2206)....
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http://issues.apache.org/jira/browse/HIVE-3667
Author: Yin Huai,
2012-11-05, 14:35
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Re: Review Request: HIVE-2206: add a new optimizer for query correlation discovery and optimization - Hive - [mail # dev]
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...This is an automatically generated e-mail. To reply, visit: https://reviews.apache.org/r/7126/ (Updated Nov. 3, 2012, 1:50 a.m.) Review request for hive. Description &nbs...
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Author: Yin Huai,
2012-11-03, 01:50
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[HIVE-3511] Constant values in aggregation parameters should not be attached to every map output row - Hive - [issue]
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...When map-side-aggregation is disabled (hive.map.aggr=false), constant values in aggregation parameters are attached to every map output row. For example, in test case 'count.q' (https://gith...
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http://issues.apache.org/jira/browse/HIVE-3511
Author: Yin Huai,
2012-09-28, 01:48
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aggName in SemanticAnalyzer.getGenericUDAFEvaluator - Hive - [mail # dev]
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...Hello All, The method of org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.getGenericUDAFEvaluator(String, ArrayList, ASTNode, boolean, boolean) is called from three methods, which are ...
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Author: Yin Huai,
2012-09-14, 21:06
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configuring log4j for unit tests - Hive - [mail # dev]
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...Hello All, When I run hive unit tests, I always can find an error saying the class of org.apache.hadoop.log.metrics.EventCounter can not be found. Seems the reason is that in hadoop 0....
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Author: Yin Huai,
2012-09-12, 16:57
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Re: ColumnarSerDe and LazyBinaryColumnarSerDe - Hive - [mail # user]
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...Thanks. I forgot to consider the DOUBLE data type in the table. For the case of lineitem, ColumnarSerDe can use less bytes to store a double than LazyBinaryColumnarSerDe (8bytes). &nbs...
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Author: Yin Huai,
2012-03-07, 18:35
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ColumnarSerDe and LazyBinaryColumnarSerDe - Hive - [mail # user]
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...Hi, Is LazyBinaryColumnarSerDe more space efficient than ColumnarSerDe in general? Let me make my question more specific. I generated two tables from the table lineitem of ...
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Author: Yin Huai,
2012-03-06, 16:58
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Re: Review Request: HIVE-2206: add a new optimizer for query correlation discovery and optimization - Hive - [mail # dev]
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...This is an automatically generated e-mail. To reply, visit: https://reviews.apache.org/r/2001/ (Updated 2012-02-10 20:49:01.177796) Review request for hive. Changes ...
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Author: Yin Huai,
2012-02-10, 20:49
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