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From "Khurram Faraaz (JIRA)" <j...@apache.org>
Subject [jira] [Created] (DRILL-4898) wrong results : Query on directory containing CSV data
Date Wed, 21 Sep 2016 10:24:20 GMT
Khurram Faraaz created DRILL-4898:
-------------------------------------

             Summary: wrong results : Query on directory containing CSV data
                 Key: DRILL-4898
                 URL: https://issues.apache.org/jira/browse/DRILL-4898
             Project: Apache Drill
          Issue Type: Bug
          Components: Execution - Flow
    Affects Versions: 1.9.0
         Environment: 4 node cluster
            Reporter: Khurram Faraaz


incorrect results : Query on directory containing CSV data
directory has 4534327 number of rows ~ 4.5M records  (there are 6 CSV files)
Drill 1.9.0 commit ID: f3c26e34
Data is available here - /home/MAPRTECH/qa/drill/uber_trip_data

Note that data in columns[3] has the value "B02512\r" in query results.
{noformat} 
0: jdbc:drill:schema=dfs.tmp> select * from `uber_trip_data` limit 5;
+----------------------------------------------------------+
|                         columns                          |
+----------------------------------------------------------+
| ["2014-08-01 00:03:00","40.7366","-73.9906","B02512\r"]  |
| ["2014-08-01 00:09:00","40.726","-73.9918","B02512\r"]   |
| ["2014-08-01 00:12:00","40.7209","-74.0507","B02512\r"]  |
| ["2014-08-01 00:12:00","40.7387","-73.9856","B02512\r"]  |
| ["2014-08-01 00:12:00","40.7323","-74.0077","B02512\r"]  |
+----------------------------------------------------------+
5 rows selected (0.184 seconds)
{noformat}

But when we do a select on columns[3] we see a different value in the query result.
{noformat}
0: jdbc:drill:schema=dfs.tmp> select columns[3] from `uber_trip_data` limit 5;
+----------+
|  EXPR$0  |
+----------+
  |02512
  |02512
  |02512
  |02512
  |02512
+----------+
5 rows selected (0.159 seconds)  
{noformat}

Searching for 'B02512' returns no rows. (where as it should have returned data)
{noformat}
0: jdbc:drill:schema=dfs.tmp> select * from `uber_trip_data` where columns[3]='B02512';
+----------+
| columns  |
+----------+
+----------+
No rows selected (1.707 seconds)
{noformat}




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