HIVE-26296: RuntimeException when executing EXPLAIN CBO JOINCOST on query with JDBC tables #3349
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…uery with JDBC tables
asolimando
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Jun 8, 2022
DongWei-4
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Oct 28, 2022
…uery with JDBC tables (Stamatis Zampetakis, reviewed by Alessandro Solimando, Krisztian Kasa) Compute selectivity for all types of joins in the same way. There is no particular reason to throw an exception when the Join operator is not an instance of HiveJoin. Closes apache#3349
dengzhhu653
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Dec 15, 2022
…uery with JDBC tables (Stamatis Zampetakis, reviewed by Alessandro Solimando, Krisztian Kasa) Compute selectivity for all types of joins in the same way. There is no particular reason to throw an exception when the Join operator is not an instance of HiveJoin. Closes apache#3349
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What changes were proposed in this pull request?
Compute selectivity for all types of joins in the same way. I don't see a particular reason to throw an exception when the
Joinoperator is not an instance ofHiveJoin.Why are the changes needed?
Avoid
RuntimeExceptionwhen computing statistics for queries with more thanHiveXXoperators.Does this PR introduce any user-facing change?
No
How was this patch tested?
mvn test -Dtest=TestMiniLlapLocalCliDriver -Dqfile=cbo_jdbc_joincost.qThe test fails with a
RuntimeExceptionwithout the changes in this PR.