Kudu维表在做join的时候，过滤条件不起作用
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Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 30/100
Research direction
The report points to KuduAsyncSideInfo.buildEqualInfo and says dealOneEqualCon is never called; begin by locating those methods and reproducing the shown SQL against the Kudu side table. Trace the join setup and verify that the ON condition is applied rather than producing a Cartesian-product count, then add or update coverage for the corrected behavior.
Written by the indexing model from the issue text.
Description
insert into dim_kafka_sink
SELECT
p.no,
p.code,
count(c.phone) tag_test_1
from bdl_kafka_source s
inner join bdl_kudu_side c on c.user_id = s.user_id
使用1.8版本，在测试的时候，发现统计的结果是s表和c做笛卡尔积的数量，怀疑join中的on条件没有起作用。通过源码断点调试，发现下面的循环不能进去：
继续排查发现KuduAsyncSideInfo类的buildEqualInfo方法是空的实现， dealOneEqualCon也方法也没有被调用
- Dominant language
- Java
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