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Posted to issues@drill.apache.org by "Steven Phillips (JIRA)" <ji...@apache.org> on 2014/10/30 22:37:34 UTC

[jira] [Created] (DRILL-1617) Disable ProducerConsumer

Steven Phillips created DRILL-1617:
--------------------------------------

             Summary: Disable ProducerConsumer
                 Key: DRILL-1617
                 URL: https://issues.apache.org/jira/browse/DRILL-1617
             Project: Apache Drill
          Issue Type: Bug
            Reporter: Steven Phillips


This operator causes incorrect query results:

0: jdbc:drill:schema=dfs.par100> alter session set `planner.add_producer_consumer` = true;
+------------+------------+
|     ok     |  summary   |
+------------+------------+
| true       | planner.add_producer_consumer updated. |
+------------+------------+
1 row selected (0.053 seconds)
0: jdbc:drill:schema=dfs.par100> select count(l_orderkey) from lineitem;
+------------+
|   EXPR$0   |
+------------+
| 600037902  |
+------------+
1 row selected (0.212 seconds)
0: jdbc:drill:schema=dfs.par100> select count(l_orderkey) from lineitem where 1 = 1;
+------------+
|   EXPR$0   |
+------------+
| 569114624  |
+------------+
1 row selected (2.163 seconds)
0: jdbc:drill:schema=dfs.par100> alter session set `planner.add_producer_consumer` = false;
+------------+------------+
|     ok     |  summary   |
+------------+------------+
| true       | planner.add_producer_consumer updated. |
+------------+------------+
1 row selected (0.046 seconds)
0: jdbc:drill:schema=dfs.par100> select count(l_orderkey) from lineitem where 1 = 1;
+------------+
|   EXPR$0   |
+------------+
| 600037902  |
+------------+
1 row selected (2.657 seconds)

As an immediate fix, we should disable this operator.



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