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Review request for hive. Description ------- Vectorized COUNT(*) for all types. This addresses bug HIVE-4452. https://issues.apache.org/jira/browse/HIVE-4452 Diffs ----- ql/src/java/org/apache/hadoop/hive/ql/exec/vector/VectorizationContext.java 1ef4955 ql/src/java/org/apache/hadoop/hive/ql/exec/vector/expressions/aggregates/VectorUDAFCountStar.java PRE-CREATION ql/src/test/org/apache/hadoop/hive/ql/exec/vector/TestVectorGroupByOperator.java b3b5cd2 Diff: https://reviews.apache.org/r/11426/diff/ Testing ------- New UT added, manually tested in hive-cli Thanks, Remus Rusanu