TheNeuralBit opened a new pull request #14361: URL: https://github.com/apache/beam/pull/14361
This PR implements `Series.is_unique` with the following flow:
- Copy data to the index
- Compute is_unique per index
- Combine results in Singleton partitioning
This seems expensive since it will require two shuffles (one to re-partition
by the new index, one to collect into Singleton), but I can't come up with a
better approach.
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