dev：
1. 软件环境：
kylin：1.5.2-cdh5.7.1
hadoop：2.6.0-cdh5.7.1
hive：1.1.0-cdh5.7.1
hbase：1.2.0-cdh5.7.1
JDK: 1.7.0_67
2. 问题描述：
在Kylin Web GUI用union all合并两个cube结果时，返回结果不正确。哪位知道是什么原因导致
例：
1）分别查询两张已建cube的表
查询sql：
查询sql：
select dim01,
select dim01,
sum(val_cnt) as val_cnt1,
sum(val_cnt) as val_cnt1,
1 as flag
2 as flag
from td_idx_1000100001_1
from td_idx_1000100002_1
group by dim01；
group by dim01；
返回结果：
返回结果：
DIM01 VAL_CNT1 FLAG
DIM01 VAL_CNT1 FLAG
A0001 40031.37 1
A0001 40207.42 2
A0002 41613.63 1
A0002 41698.91 2
A0003 42260.19 1
A0003 42390.84 2
2）用union all进行合并查询
查询sql：
select dim01,
sum(val_cnt) as val_cnt1,
1 as flag
from td_idx_1000100001_1
group by dim01
union all
select dim01,
sum(val_cnt) as val_cnt1,
2 as flag
from td_idx_1000100002_1
group by dim01
预期返回结果： 实际返回结果：
DIM01 VAL_CNT1 FLAG DIM01 VAL_CNT1 FLAG
A0001 40031.37 1 A0001 40207.42 1
A0002 41613.63 1 A0002 41698.91 1
A0003 42260.19 1 A0003 42390.84 1
A0001 40207.42 2 A0001 40207.42 2
A0002 41698.91 2 A0002 41698.91 2
A0003 42390.84 2 A0003 42390.84 2
发现FLAG =1 时的 VAL_CNT1 值不正确，查询的值恰好是最后一个union all表的值。
3）多表union all 及两张表left join亦是如此
相关日志：
SQL: select dim01,
sum(val_cnt) as val_cnt1,
1 as flag
from td_idx_1000100001_1
group by dim01
union all
select dim01,
sum(val_cnt) as val_cnt1,
2 as flag
from td_idx_1000100002_1
group by dim01
order by flag,dim01
User: ADMIN
Success: true
Duration: 0.069
Project: asiainfo_kylin
Realization Names: [cube_1000100002_1]
Cuboid Ids: [16]
Total scan count: 6
Result row count: 6
Accept Partial: true
Is Partial Result: false
Hit Exception Cache: false
Storage cache used: false
Message: null
nidongdong1987
