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[HIVE-7344] Add streaming support in Windowing mode for FirstVal, LastVal - Hive - [issue]
...Continuation of HIVE-7062, HIVE-7143...
http://issues.apache.org/jira/browse/HIVE-7344    Author: Harish Butani, 2014-07-07, 23:25
[HIVE-7143] Add Streaming support in Windowing mode for more UDAFs (min/max, lead/lag, fval/lval) - Hive - [issue]
...Provided implementations for Streaming for the above fns.Min/Max based on Alg by Daniel Lemire: http://www.archipel.uqam.ca/309/1/webmaximinalgo.pdf...
http://issues.apache.org/jira/browse/HIVE-7143    Author: Harish Butani, 2014-07-07, 23:23
[HIVE-6643] Add a check for cross products in plans and output a warning - Hive - [issue]
...Now that we support old style join syntax, it is easy to write queries that generate a plan with a cross product.For e.g. say you have A join B join C join D on A.x = B.x and A.y = D.y and C...
http://issues.apache.org/jira/browse/HIVE-6643    Author: Harish Butani, 2014-07-03, 10:04
[HIVE-7062] Support Streaming mode in Windowing - Hive - [issue]
...1. Have the Windowing Table Function support streaming mode.2. Have special handling for Ranking UDAFs.3. Have special handling for Sum/Avg for fixed size Wdws....
http://issues.apache.org/jira/browse/HIVE-7062    Author: Harish Butani, 2014-07-03, 02:55
[HIVE-7304] Transitive Predicate Propagation doesn't happen properly after HIVE-7159 - Hive - [issue]
...The reason for the regression is that PredicateTransitivePropagate looks at the FilterOperator below the ReduceSink. SemanticAnalyzer::genNotNullFilterForJoinSourcePlan was stacking another ...
http://issues.apache.org/jira/browse/HIVE-7304    Author: Harish Butani, 2014-07-01, 05:30
[HIVE-7063] Optimize for the Top N within a Group use case - Hive - [issue]
...It is common to rank within a Group/Partition and then only return the Top N entries within each Group.With Streaming mode for Windowing, we should push the post filter on the rank into the ...
http://issues.apache.org/jira/browse/HIVE-7063    Author: Harish Butani, 2014-07-01, 03:53
[expand - 1 more] - Re: Review Request 22752: HIVE-7063: Optimize for the Top N within a Group use case - Hive - [mail # dev]
...doneyes we can push lead. have added a comment explaining this.for rank, drank, lead we only need to consider rows before current row, so window doesn't matter. Also for rank/drank window is...
   Author: Harish Butani, 2014-06-30, 01:41
[HIVE-7283] CBO: plumb in HepPlanner and FieldTrimmer(ColumnPruner) into Optiq based planning - Hive - [issue]
...1.HepPlanner initially used for: Predicate Pushdown Transitive Predicate inference Partition Pruning2. Use Optiq's FieldTrimmer for ColumnPrunerTo begin with the rules are copies of Optiq ba...
http://issues.apache.org/jira/browse/HIVE-7283    Author: Harish Butani, 2014-06-28, 08:39
[HIVE-7159] For inner joins push a 'is not null predicate' to the join sources for every non nullSafe join condition - Hive - [issue]
...A join B on A.x = B.ycan be transformed to(A where x is not null) join (B where y is not null) on A.x = B.yApart from avoiding shuffling null keyed rows it also avoids issues with reduce-sid...
http://issues.apache.org/jira/browse/HIVE-7159    Author: Harish Butani, 2014-06-27, 02:19
[HIVE-6439] Introduce CBO step in Semantic Analyzer - Hive - [issue]
...This patch introduces CBO step in SemanticAnalyzer. For now the CostBasedOptimizer is an empty shell. The contract between SemAly and CBO is: CBO step  is controlled by the 'hive.enable...
http://issues.apache.org/jira/browse/HIVE-6439    Author: Harish Butani, 2014-06-24, 22:41
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