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Posted to dev@kylin.apache.org by "Yaguang Jia (Jira)" <ji...@apache.org> on 2023/04/25 07:09:00 UTC
[jira] [Created] (KYLIN-5525) When the excluded column is enabled and the query hits multiple identical models at the same time, the query may push down
Yaguang Jia created KYLIN-5525:
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Summary: When the excluded column is enabled and the query hits multiple identical models at the same time, the query may push down
Key: KYLIN-5525
URL: https://issues.apache.org/jira/browse/KYLIN-5525
Project: Kylin
Issue Type: Bug
Reporter: Yaguang Jia
When there is only a table index, union all and its two subqueries can respond quickly. When the aggregate index is added, the subquery can hit the model, but the union all statement is depressed and can be reproduced in the customer environment. Query id refer to the screenshot below.
当只有明细索引时,union all及其两个子查询都能很快响应,当增加了聚合索引后,子查询可以击中模型,但是union all语句走了下压,可在客户环境复现,查询id参考下面截图
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