pengcheng xiong created HIVE-7736:
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Summary: improve the columns stats update speed for all the
partitions of a table
Key: HIVE-7736
URL: https://issues.apache.org/jira/browse/HIVE-7736
Project: Hive
Issue Type: Improvement
Reporter: pengcheng xiong
Assignee: pengcheng xiong
Priority: Minor
The current implementation of columns stats update for all the partitions of a
table takes a long time when there are thousands of partitions.
For example, on a given cluster, it took 600+ seconds to update all the
partitions' columns stats for a table with 2 columns but 2000 partitions.
ANALYZE TABLE src_stat_part partition (partitionId) COMPUTE STATISTICS for
columns;
We would like to improve the columns stats update speed for all the partitions
of a table
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