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Posted to issues@arrow.apache.org by "JacekPliszka (via GitHub)" <gi...@apache.org> on 2023/09/29 19:53:08 UTC

[GitHub] [arrow] JacekPliszka opened a new issue, #37959: rechunk/chunk_by method for pyarrow.lib.ChunkedArray

JacekPliszka opened a new issue, #37959:
URL: https://github.com/apache/arrow/issues/37959

   ### Describe the enhancement requested
   
   def rechunk/chunk_by(self, assign_to_chunk: Array|ChunkedArray):
       ...
   
   If we have chunked array [[1,2], [3,4,5]]
   
   and we do rechunk([1, 0, 1, 0,1]) - it would create chunked array with 2nd and 4th item in the first chunk
   and 1st, 3rd and 5th in the 2nd:
   
   [[2, 4], [1,3,5]]
   
   ### Component(s)
   
   Python


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Re: [I] rechunk/chunk_by/shuffle method for pyarrow.lib.ChunkedArray [arrow]

Posted by "JacekPliszka (via GitHub)" <gi...@apache.org>.

JacekPliszka commented on issue #37959:
URL: https://github.com/apache/arrow/issues/37959#issuecomment-1784055104

   This can be emulated with pyarrow.chunked_array and chunked_array.take method


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Re: [I] rechunk/chunk_by/shuffle method for pyarrow.lib.ChunkedArray [arrow]

Posted by "JacekPliszka (via GitHub)" <gi...@apache.org>.

JacekPliszka closed issue #37959: rechunk/chunk_by/shuffle method for pyarrow.lib.ChunkedArray
URL: https://github.com/apache/arrow/issues/37959


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