[HIVE-3298] select 1+1 from dual; if dual is an empty table this statement will return no result

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 0.8.1
• Component/s: Query Processor

Environment

Linux 3.0.0-14-generic #23-Ubuntu SMP Mon Nov 21 20:34:47 UTC 2011 i686 i686 i386 GNU/Linux
java version "1.6.0_25"
hadoop-0.20.2-cdh3u0
hive-0.8.1

• Assignee: Unassigned
• Reporter: caofangkun
• Created: 25/Jul/12 09:02
• Updated: 25/Jul/12 14:50
• Resolved: 25/Jul/12 14:50

Description

hive>drop table if exists dual;
hive>create table dual (dummy string);
hive>select 1+1 from dual;

Total MapReduce jobs = 1
Launching Job 1 out of 1
Number of reduce tasks is set to 0 since there's no reduce operator
Starting Job = job_201206081154_0458, Tracking URL = http://dwtest-93-61:50030/jobdetails.jsp?jobid=job_201206081154_0458
Kill Command = /home/hive/hadoop-0.20.2-cdh3u0/bin/hadoop job -Dmapred.job.tracker=dwtest-93-61:9001 -kill job_201206081154_0458
Hadoop job information for Stage-1: number of mappers: 0; number of reducers: 0
2012-07-25 16:58:15,793 Stage-1 map = 0%, reduce = 0%
2012-07-25 16:58:17,817 Stage-1 map = 100%, reduce = 100%
Ended Job = job_201206081154_0458
MapReduce Jobs Launched:
Job 0: HDFS Read: 0 HDFS Write: 0 SUCESS
Total MapReduce CPU Time Spent: 0 msec
OK
Time taken: 6.607 seconds