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Review request for hive. Description ------- Please see jira for detailed description This addresses bug HIVE-3493. https://issues.apache.org/jira/browse/HIVE-3493 Diffs ----- ql/src/java/org/apache/hadoop/hive/ql/parse/SemanticAnalyzer.java 33ce6ca Diff: https://reviews.apache.org/r/7222/diff/ Testing ------- Cannot test TestHBaseMinimrCliDriver, TestHBaseCliDriver, TestHBaseNegativeCliDriver, testSynchronized in TestEmbeddedHiveMetaStore, testSynchronized in TestRemoteHiveMetaStore, testSynchronized in TestSetUGIOnBothClientServer, testSynchronized in TestSetUGIOnOnlyClient, testSynchronized in TestSetUGIOnOnlyServer, and testNegativeCliDriver_local_mapred_error_cache in TestNegativeCliDriver, since trunk failed on these tests on my machine. Also, since trunk will generate a different order of results (rows are in a different order) for queries skewjoinopt1.q to skewjoinopt5.q, skewjoinopt10.q, skewjoinopt15.q to skewjoinopt17.q, and skewjoinopt19.q to skewjoinopt20.q, I cannot test these queries on my machine either. All other tests pass. Thanks, Yin Huai