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Mars is a tensor-based unified framework for large-scale data computation which scales numpy, pandas, scikit-learn and Python functions.

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**Describe the bug** A clear and concise description of what the bug is. ```python ctx = {'d115db169882b5c06d671c887024b11f_0': (array([[0.83104541, 0.80554386, 0.3985519 , ..., 0.72182508, 0.77294997, ...f43806cf2fd20aef4b6e34fc0468be5d_0': [b'DMLC_NUM_WORKER=1', b'DMLC_TRACKER_URI=127.0.0.1', b'DMLC_TRACKER_PORT=32911']} op =...

type: bug

**Bug description** The MSVC team recently added Mars as part of RWC testing to detect compiler regression. Seems the project will fail to build under Windows due to error C1189:...

## What do these changes do? This pull request resolves the issue where `sort_values(ignore_index=True)` raises a `TypeError` after using `dropna`. The fix ensures proper handling of unknown dimensions by parsing...