4paradigm / 4paradigm/OpenMLDB

WindowParallelComputeOpt use LCA algorithm may not handle specified physical plan

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bug
Dominant language
C++
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Description

Now the LCA algorithm in WindowParallelComputeOpt may not handle this graph.

![WechatIMG234](https://user-images.githubusercontent.com/2715000/138835395-900cc23b-0916-4382-a989-3dc1f2d4bf91.jpeg)

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