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Posted to dev@kylin.apache.org by "GuKe (Jira)" <ji...@apache.org> on 2021/04/08 09:58:00 UTC

[jira] [Created] (KYLIN-4963) multiple union all query unresponsive

GuKe created KYLIN-4963:
---------------------------

             Summary: multiple union all query unresponsive
                 Key: KYLIN-4963
                 URL: https://issues.apache.org/jira/browse/KYLIN-4963
             Project: Kylin
          Issue Type: Bug
          Components: Query Engine
    Affects Versions: v3.1.0, v2.6.3
         Environment: Centos 7.4.1
hbase 1.2.4
hive 2.0.1
hadoop 2.7.2
            Reporter: GuKe


When i use multiple union all for different query , while the front two query result is empty ，the request of query will be unresponsive.
eg:
select 'a' as t from table1 where 1=2 
union all
select 'b' as t from table1 where 1=2
union all
select 'c' as t from table1 where 1=1



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