Chaoyu Tang created HIVE-16803:
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Summary: Alter table change column comment should not try to get
column stats for update
Key: HIVE-16803
URL: https://issues.apache.org/jira/browse/HIVE-16803
Project: Hive
Issue Type: Bug
Components: Statistics
Reporter: Chaoyu Tang
Assignee: Chaoyu Tang
Priority: Minor
When running command like "alter table .. change .." (e.g. ALTER TABLE testtbl
CHANGE col col string COMMENT 'change column comment';) to change a column's
comment, Hive should not go to fetch the column stats for update since the
comment change does not affect table/partition column stats.
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