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Review request for hive and John Sichi. Summary ------- This patch has defined a new AggregateIndexHandler which is used to optimize the query plan for groupby queries. This addresses bug HIVE-1694. https://issues.apache.org/jira/browse/HIVE-1694 Diffs ----- common/src/java/org/apache/hadoop/hive/conf/HiveConf.java b46976f ql/src/java/org/apache/hadoop/hive/ql/index/AggregateIndexHandler.java PRE-CREATION ql/src/java/org/apache/hadoop/hive/ql/index/HiveIndex.java 591c9ff ql/src/java/org/apache/hadoop/hive/ql/metadata/Hive.java 2ca63b3 ql/src/java/org/apache/hadoop/hive/ql/optimizer/Optimizer.java 590d69a ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteCanApplyCtx.java PRE-CREATION ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteCanApplyProcFactory.java PRE-CREATION ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteGBUsingIndex.java PRE-CREATION ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteParseContextGenerator.java PRE-CREATION ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteQueryUsingAggregateIndex.java PRE-CREATION ql/src/java/org/apache/hadoop/hive/ql/optimizer/index/RewriteQueryUsingAggregateIndexCtx.java PRE-CREATION ql/src/java/org/apache/hadoop/hive/ql/parse/BaseSemanticAnalyzer.java 77a6dc6 ql/src/test/queries/clientpositive/ql_rewrite_gbtoidx.q PRE-CREATION ql/src/test/results/clientpositive/ql_rewrite_gbtoidx.q.out PRE-CREATION Diff: https://reviews.apache.org/r/1194/diff Testing ------- Thanks, Prajakta