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Review request for hive and pengcheng xiong. Bugs: HIVE-15653 https://issues.apache.org/jira/browse/HIVE-15653 Repository: hive-git Description ------- For most of alter table operations like table rename, add columns, change column type etc (besides the set table properties), the table stats status should not change. But for some other operations like update statistics, change location, the basic stats status should change. Diffs ----- ql/src/java/org/apache/hadoop/hive/ql/exec/DDLTask.java a1fb874 ql/src/test/queries/clientpositive/alter_table_stats_status.q PRE-CREATION ql/src/test/results/clientpositive/alter_table_stats_status.q.out PRE-CREATION Diff: https://reviews.apache.org/r/55731/diff/ Testing ------- 1. Manual tests 2. new unit tests Thanks, Chaoyu Tang