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REF: ensure to_arrays returns matched-length arrays/columns #43099

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jbrockmendel
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ATM we pass both 'columns' and arr_names to arrays_to_mgr and create_block_manager_from_arrays. This is part of en effort to align these before calling arrays_to_mgr, which will let us improve the performance of _form_blocks.

@jreback jreback added this to the 1.4 milestone Aug 19, 2021
@jreback jreback added the Performance Memory or execution speed performance label Aug 19, 2021
@jreback jreback merged commit 8f150e5 into pandas-dev:master Aug 19, 2021
@jbrockmendel jbrockmendel deleted the ref-create_block_manager_from_arrays branch August 19, 2021 01:50
feefladder pushed a commit to feefladder/pandas that referenced this pull request Sep 7, 2021
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