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(Updated May 19, 2020, 4:14 p.m.) Review request for hive and Jesús Camacho Rodríguez. Bugs: HIVE-23493 https://issues.apache.org/jira/browse/HIVE-23493 Repository: hive-git Description ------- Rewrite plan to join back tables with many projected columns joined multiple times Diffs (updated) ----- common/src/java/org/apache/hadoop/hive/conf/HiveConf.java 5a39006d8a data/scripts/q_perf_test_init_constraints.sql 3b3f503ee4 ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/rules/HiveCardinalityPreservingJoinOptimization.java PRE-CREATION ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/rules/HiveCardinalityPreservingJoinRule.java PRE-CREATION ql/src/java/org/apache/hadoop/hive/ql/optimizer/calcite/rules/HiveRelFieldTrimmer.java 19ce3ea223 ql/src/java/org/apache/hadoop/hive/ql/parse/CalcitePlanner.java 32ad4c1539 ql/src/test/results/clientpositive/perf/tez/constraints/cbo_query11.q.out 127003c78b ql/src/test/results/clientpositive/perf/tez/constraints/cbo_query74.q.out ee232fa4e3 Diff: https://reviews.apache.org/r/72526/diff/2/ Changes: https://reviews.apache.org/r/72526/diff/1-2/ Testing ------- mvn test -Dtest.output.overwrite -DskipSparkTests -Dtest=TestMiniLlapLocalCliDriver -Dqfile=cardinality_preserving_join_opt.q,cardinality_preserving_join_opt_q4.q,cardinality_preserving_join_opt_q11.q,cardinality_preserving_join_opt_q74.q -pl itests/qtest -Pitests Thanks, Krisztian Kasa