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[HIVE-4751] Support distinct aggregations - Hive - [issue]
...Right now, the query shown below cannot be optimized by correlation optimizer because for distinct aggregations, distinct columns will be added into the sorting keys. SELECT a.key AS key1, a...
http://issues.apache.org/jira/browse/HIVE-4751    Author: Yin Huai, 2013-06-18, 19:35
[HIVE-3876] call resetValid instead of ensureCapacity in the constructor of BytesRefArrayWritable - Hive - [issue]
...In the constructor of BytesRefArrayWritable, ensureCapacity(capacity) is called, but "valid" has not been adjusted accordingly. After a new BytesRefArrayWritable has been created with a init...
http://issues.apache.org/jira/browse/HIVE-3876    Author: Yin Huai, 2013-06-03, 22:53
[HIVE-4572] ColumnPruner cannot preserve RS key columns corresponding to un-selected join keys in columnExprMap - Hive - [issue]
...For a RS of a join operator, if the join key corresponding to this RS does not appear in the SELECT clause, ColumnPruner will drop the entry of this column in colExprMap. Example:SELECT x.ke...
http://issues.apache.org/jira/browse/HIVE-4572    Author: Yin Huai, 2013-05-28, 22:59
[HIVE-3495] For UDAFs, when generating a plan without map-side-aggregation, constant agg parameters will be replaced by ExprNodeColumnDesc - Hive - [issue]
...For UDAFs, when generating a plan without map-side-aggregation, constant agg parameters having ConstantObjectInspectors will be replaced by ExprNodeColumnDescs. A UDFArgumentTypeException wi...
http://issues.apache.org/jira/browse/HIVE-3495    Author: Yin Huai, 2013-02-12, 17:06
Re: Review Request: HIVE-2206: add a new optimizer for query correlation discovery and optimization - Hive - [mail # dev]
...This is an automatically generated e-mail. To reply, visit: https://reviews.apache.org/r/7126/  (Updated Jan. 16, 2013, 7 p.m.)   Review request for hive.   Description  ...
   Author: Yin Huai, 2013-01-16, 19:00
[HIVE-3493] aggName of SemanticAnalyzer.getGenericUDAFEvaluator is generated in two different ways - Hive - [issue]
...aggName in org.apache.hadoop.hive.ql.parse.SemanticAnalyzer.getGenericUDAFEvaluator(String, ArrayList<ExprNodeDesc>, ASTNode, boolean, boolean) is generated by two different ways. One ...
http://issues.apache.org/jira/browse/HIVE-3493    Author: Yin Huai, 2012-12-19, 07:03
[HIVE-3669] Support queries in which input tables of correlated MR jobs involves intermediate tables - Hive - [issue]
...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...
http://issues.apache.org/jira/browse/HIVE-3669    Author: Yin Huai, 2012-11-05, 15:03
[HIVE-3668] Merge MapReduce jobs which share input tables and the same partitioning keys into a single MapReduce job - Hive - [issue]
...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 ...
http://issues.apache.org/jira/browse/HIVE-3668    Author: Yin Huai, 2012-11-05, 14:49
[HIVE-3667] Umbrella jira for Correlation Optimizer - Hive - [issue]
...This is an umbrella jira to track work related to Correlation Optimizer (originally proposed in HIVE-2206)....
http://issues.apache.org/jira/browse/HIVE-3667    Author: Yin Huai, 2012-11-05, 14:35
[HIVE-3511] Constant values in aggregation parameters should not be attached to every map output row - Hive - [issue]
...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...
http://issues.apache.org/jira/browse/HIVE-3511    Author: Yin Huai, 2012-09-28, 01:48
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