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mars-project / mars

Mars is a tensor-based unified framework for large-scale data computation which scales numpy, pandas, scikit-learn and Python functions.
https://mars-project.readthedocs.io
Apache License 2.0
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Support join_by of structured arrays (recarray) #517

Open sighingnow opened 5 years ago

sighingnow commented 5 years ago

Is your feature request related to a problem? Please describe.

We have already supported structured arrays (numpy.recarray). It would be great if we can support some advanced method of structured arrays, for example join_by.

Describe the solution you'd like

Implement join_by.

Describe alternatives you've considered

Otherwise, we need a for-loop to finish some requirements like join.

Additional context Add any other context or screenshots about the feature request here.

qinxuye commented 5 years ago

We don't have mt.recarray yet, and structured dtype is not fully tested. Thus how about adding support for them first?