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https://issues.apache.org/jira/browse/HIVE-7166?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14378529#comment-14378529
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Hari Sankar Sivarama Subramaniyan commented on HIVE-7166:
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cc-ing [~mmccline] . I am not sure if this issue happens with the latest Hive.
It will be great if you take a look at it and close if this is no longer a
issue. HIVE-7260 is the follow up jira for this. These 2 jiras : HIVE-7166 and
HIVE-7260 have been open for ages with review pending status.
Thanks
Hari
> Vectorization with UDFs returns incorrect results
> -------------------------------------------------
>
> Key: HIVE-7166
> URL: https://issues.apache.org/jira/browse/HIVE-7166
> Project: Hive
> Issue Type: Bug
> Components: Vectorization
> Affects Versions: 0.13.0
> Environment: Hive 0.13 with Hadoop 2.4 on a 3 node cluster
> Reporter: Benjamin Bowman
> Assignee: Hari Sankar Sivarama Subramaniyan
> Priority: Minor
> Attachments: HIVE-7166.1.patch, HIVE-7166.2.patch
>
>
> 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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