Rajesh Balamohan created HIVE-26072:
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Summary: Enable vectorization for stats gathering (tablescan op)
Key: HIVE-26072
URL: https://issues.apache.org/jira/browse/HIVE-26072
Project: Hive
Issue Type: Bug
Components: Hive
Reporter: Rajesh Balamohan
https://issues.apache.org/jira/browse/HIVE-24510 enabled vectorization for
compute_bit_vector.
But tablescan operator for stats gathering is disabled by default.
[https://github.com/apache/hive/blob/master/ql/src/java/org/apache/hadoop/hive/ql/optimizer/physical/Vectorizer.java#L2577]
Need to enable vectorization for this. This can significantly reduce runtimes
for analyze statements for large tables.
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