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https://issues.apache.org/jira/browse/HIVE-2723?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Navis reassigned HIVE-2723:
---------------------------
Assignee: Navis
> should throw "Ambiguous column reference key" Exception in particular join
> condition
> --------------------------------------------------------------------------------------
>
> Key: HIVE-2723
> URL: https://issues.apache.org/jira/browse/HIVE-2723
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Affects Versions: 0.8.0
> Environment: Linux zongren-VirtualBox 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-0.7.0-cdh3u0
> Reporter: caofangkun
> Assignee: Navis
> Priority: Minor
> Labels: exception-handling, query, queryparser
> Fix For: 0.9.0
>
> Attachments: HIVE-2723.D1275.1.patch
>
>
> This Bug can be Repeated as following :
> create table test(key string, value string);
> create table test1(key string, value string);
> 1: Correct!
> select t.key
> from
> (select a.key, b.key from (select * from src ) a right outer join (select *
> from src1) b on (a.key = b.key)) t;
> FAILED: Error in semantic analysis: Ambiguous column reference key
> 2: Uncorrect!! Should throw Exception as above too!
> select t.key --Is this a.key or b.key ? It's ambiduous!
> from
> (select a.\*, b.\* from (select * from src ) a right outer join (select *
> from src1) b on (a.value = b.value)) t;
> Total MapReduce jobs = 1
> Launching Job 1 out of 1
> Number of reduce tasks not specified. Defaulting to jobconf value of: 1
> In order to change the average load for a reducer (in bytes):
> set hive.exec.reducers.bytes.per.reducer=<number>
> In order to limit the maximum number of reducers:
> set hive.exec.reducers.max=<number>
> In order to set a constant number of reducers:
> set mapred.reduce.tasks=<number>
> Starting Job = job_201201170959_0004, Tracking URL =
> http://zongren-VirtualBox:50030/jobdetails.jsp?jobid=job_201201170959_0004
> Kill Command = /home/zongren/workspace/hadoop-adh/bin/hadoop job
> -Dmapred.job.tracker=zongren-VirtualBox:9001 -kill job_201201170959_0004
> Hadoop job information for Stage-1: number of mappers: 2; number of reducers:
> 1
> 2012-01-17 11:02:47,507 Stage-1 map = 0%, reduce = 0%
> 2012-01-17 11:02:55,002 Stage-1 map = 100%, reduce = 0%
> 2012-01-17 11:03:04,240 Stage-1 map = 100%, reduce = 33%
> 2012-01-17 11:03:05,258 Stage-1 map = 100%, reduce = 100%
> Ended Job = job_201201170959_0004
> MapReduce Jobs Launched:
> Job 0: Map: 2 Reduce: 1 HDFS Read: 669 HDFS Write: 216 SUCESS
> Total MapReduce CPU Time Spent: 0 msec
> OK
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