[jira] [Created] (HIVE-15369) Extend column pruner to account for residual filter expression in Join operator

["Jesus Camacho Rodriguez (JIRA)" <ji...@apache.org>]

Jesus Camacho Rodriguez created HIVE-15369:
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             Summary: Extend column pruner to account for residual filter expression in Join operator
                 Key: HIVE-15369
                 URL: https://issues.apache.org/jira/browse/HIVE-15369
             Project: Hive
          Issue Type: Bug
          Components: Logical Optimizer
    Affects Versions: 2.2.0
            Reporter: Jesus Camacho Rodriguez
            Assignee: Jesus Camacho Rodriguez


Introduced by HIVE-15251.

We need to extend ColumnPruner logic to take into account residual filter expressions in Join operator. Otherwise, query will fail at execution time.

Issue can be reproduced as follows:

{code:sql}
set hive.strict.checks.cartesian.product=false;

CREATE TABLE test1 (key INT, value INT, col_1 STRING);
INSERT INTO test1 VALUES (NULL, NULL, 'None'), (98, NULL, 'None'),
    (99, 0, 'Alice'), (99, 2, 'Mat'), (100, 1, 'Bob'), (101, 2, 'Car');

CREATE TABLE test2 (key INT, value INT, col_2 STRING);
INSERT INTO test2 VALUES (102, 2, 'Del'), (103, 2, 'Ema'),
    (104, 3, 'Fli'), (105, NULL, 'None');


-- Complex condition and column projection
EXPLAIN
SELECT col_1, col_2
FROM test1 LEFT OUTER JOIN test2
ON (test1.value=test2.value
      OR test1.key=test2.key);

SELECT col_1, col_2
FROM test1 LEFT OUTER JOIN test2
ON (test1.value=test2.value
      OR test1.key=test2.key);
{code}



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