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https://issues.apache.org/jira/browse/KYLIN-5285?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shao Feng Shi updated KYLIN-5285:
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Summary: Performance optimization for sharby column (was: has only one
file after prune cuboid by sharby column, but launch 17 task when query)
> Performance optimization for sharby column
> ------------------------------------------
>
> Key: KYLIN-5285
> URL: https://issues.apache.org/jira/browse/KYLIN-5285
> Project: Kylin
> Issue Type: Bug
> Components: Query Engine
> Affects Versions: v4.0.1
> Reporter: Liu Zhao
> Assignee: Liu Zhao
> Priority: Major
> Attachments: image-2022-10-28-20-41-27-066.png,
> image-2022-10-28-20-41-37-702.png, image-2022-10-28-20-41-52-544.png,
> image-2022-10-28-20-42-01-694.png, image-2022-10-28-20-42-15-822.png,
> screenshot-1.png
>
>
> 使用了shardby，然后通过shardby裁剪到一个文件，该文件只有30多M（但这个cuboid下有17文件），结果查询的时候提交了17个task，只有一个有task在处理数据，其余都在空跑。
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