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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 ----- common/src/java/org/apache/hadoop/hive/conf/HiveConf.java f5ad3a882b 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/HiveRelFieldTrimmer.java 19ce3ea223 ql/src/java/org/apache/hadoop/hive/ql/parse/CalcitePlanner.java 32ad4c1539 ql/src/test/queries/clientpositive/cardinality_preserving_join_opt.q PRE-CREATION ql/src/test/queries/clientpositive/cardinality_preserving_join_opt_q11.q PRE-CREATION ql/src/test/queries/clientpositive/cardinality_preserving_join_opt_q4.q PRE-CREATION ql/src/test/queries/clientpositive/cardinality_preserving_join_opt_q74.q PRE-CREATION ql/src/test/results/clientpositive/llap/cardinality_preserving_join_opt.q.out PRE-CREATION ql/src/test/results/clientpositive/llap/cardinality_preserving_join_opt_q11.q.out PRE-CREATION ql/src/test/results/clientpositive/llap/cardinality_preserving_join_opt_q4.q.out PRE-CREATION ql/src/test/results/clientpositive/llap/cardinality_preserving_join_opt_q74.q.out PRE-CREATION Diff: https://reviews.apache.org/r/72526/diff/1/ 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