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Review request for hive and Ashutosh Chauhan. Bugs: HIVE-20260 https://issues.apache.org/jira/browse/HIVE-20260 Repository: hive-git Description ------- * keep track of used column; and only rescale affected columns * much more conservative than old logic - possible too much... * wip patch Diffs ----- ql/src/java/org/apache/hadoop/hive/ql/optimizer/stats/annotation/AnnotateStatsProcCtx.java 47ee949fbcfa9391c640719a57fab39279c009db ql/src/java/org/apache/hadoop/hive/ql/optimizer/stats/annotation/StatsRulesProcFactory.java 3c2b0854269d5426153958096a8b5b5ad3612c0f ql/src/test/queries/clientpositive/stat_estimate_drill.q PRE-CREATION ql/src/test/queries/clientpositive/stat_estimate_related_col.q 52da2f759a009daa372a53446e2f0fd4a88152be ql/src/test/results/clientpositive/stat_estimate_drill.q.out PRE-CREATION ql/src/test/results/clientpositive/stat_estimate_related_col.q.out 669adafda3a45f7846face3d99817cd1b9cb3664 Diff: https://reviews.apache.org/r/68109/diff/1/ Testing ------- Thanks, Zoltan Haindrich