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From "Aman Sinha (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-4794) Regression: Wrong result for query with disjunctive partition filters
Date Thu, 21 Jul 2016 05:14:20 GMT
Aman Sinha created DRILL-4794:
---------------------------------

             Summary: Regression: Wrong result for query with disjunctive partition filters
                 Key: DRILL-4794
                 URL: https://issues.apache.org/jira/browse/DRILL-4794
             Project: Apache Drill
          Issue Type: Bug
          Components: Query Planning & Optimization
    Affects Versions: 1.7.0
            Reporter: Aman Sinha
            Assignee: Aman Sinha


For a query that contains certain types of disjunctive filter conditions such as 'dir0=x OR
dir1=y'  we get wrong result when metadata caching is used.  This is a regression due to DRILL-4530.
 

Note that the filter involves OR of 2 different directory levels. For the normal case of OR
condition at the same level the problem does not occur. 

Correct result (without metadata cache) 
{noformat}
0: jdbc:drill:zk=local> select count(*) from dfs.`orders` where dir0=1994 or dir1='Q3'
;
+---------+
| EXPR$0  |
+---------+
| 60      |
+---------+
{noformat}

Wrong result (with metadata cache):
{noformat}
0: jdbc:drill:zk=local> select count(*) from dfs.`orders` where dir0=1994 or dir1='Q3'
;
+---------+
| EXPR$0  |
+---------+
| 50      |
+---------+
{noformat}




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