Benjamin Bowman created HIVE-7166:
-------------------------------------
Summary: Vectorization with UDFs returns incorrect results
Key: HIVE-7166
URL: https://issues.apache.org/jira/browse/HIVE-7166
Project: Hive
Issue Type: Bug
Components: HiveServer2, UDF
Affects Versions: 0.13.0
Environment: Hive 0.13 with Hadoop 2.4 on a 3 node cluster
Reporter: Benjamin Bowman
Priority: Minor
Using BETWEEN, a custom UDF, and vectorized query execution yields incorrect
query results.
Example Query: SELECT column_1 FROM table_1 WHERE column_1 BETWEEN (UDF_1 - X)
and UDF_1
The following test scenario will reproduce the problem:
TEST UDF (SIMPLE FUNCTION THAT TAKES NO ARGUMENTS AND RETURNS 10000):
package com.test;
import org.apache.hadoop.hive.ql.exec.Description;
import org.apache.hadoop.hive.ql.exec.UDF;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import java.lang.String;
import java.lang.*;
public class tenThousand extends UDF {
private final LongWritable result = new LongWritable();
public LongWritable evaluate() {
result.set(10000);
return result;
}
}
TEST DATA (test.input):
1|CBCABC|12
2|DBCABC|13
3|EBCABC|14
40000|ABCABC|15
50000|BBCABC|16
60000|CBCABC|17
CREATING ORC TABLE:
0: jdbc:hive2://server:10002/db> create table testTabOrc (first bigint, second
varchar(20), third int) partitioned by (range int) clustered by (first) sorted
by (first) into 8 buckets stored as orc tblproperties ("orc.compress" =
"SNAPPY", "orc.index" = "true");
CREATE LOADING TABLE:
0: jdbc:hive2://server:10002/db> create table loadingDir (first bigint, second
varchar(20), third int) partitioned by (range int) row format delimited fields
terminated by '|' stored as textfile;
COPY IN DATA:
[root@server]# hadoop fs -copyFromLocal /tmp/test.input /db/loading/.
ORC DATA:
[root@server]# beeline -u jdbc:hive2://server:10002/db -n root --hiveconf
hive.exec.dynamic.partition.mode=nonstrict --hiveconf hive.enforce.sorting=true
-e "insert into table testTabOrc partition(range) select * from loadingDir;"
LOAD TEST FUNCTION:
0: jdbc:hive2://server:10002/db> add jar /opt/hadoop/lib/testFunction.jar
0: jdbc:hive2://server:10002/db> create temporary function ten_thousand as
'com.test.tenThousand';
TURN OFF VECTORIZATION:
0: jdbc:hive2://server:10002/db> set hive.vectorized.execution.enabled=false;
QUERY (RESULTS AS EXPECTED):
0: jdbc:hive2://server:10002/db> select first from testTabOrc where first
between ten_thousand()-10000 and ten_thousand()-9995;
+--------+
| first |
+--------+
| 1 |
| 2 |
| 3 |
+--------+
3 rows selected (15.286 seconds)
TURN ON VECTORIZATION:
0: jdbc:hive2://server:10002/db> set hive.vectorized.execution.enabled=true;
QUERY AGAIN (WRONG RESULTS):
0: jdbc:hive2://server:10002/db> select first from testTabOrc where first
between ten_thousand()-10000 and ten_thousand()-9995;
+--------+
| first |
+--------+
+--------+
No rows selected (17.763 seconds)
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