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Can't handle large lists in columns #356

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biiiipy opened this issue Dec 16, 2024 · 0 comments
Open

Can't handle large lists in columns #356

biiiipy opened this issue Dec 16, 2024 · 0 comments
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bug Something isn't working

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@biiiipy
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biiiipy commented Dec 16, 2024

Environment data

  • VS Code version: 1.96
  • Data Wrangler Extension version (available under the Extensions sidebar): 1.14.0
  • Jupyter Extension version (available under the Extensions sidebar): 2024.11.0
  • Python Extension version (available under the Extensions sidebar): 2024.22.0
  • OS (Windows | Mac | Linux distro) and version: Windows
  • Pandas version: 2.2.3
  • Python and/or Anaconda version: 3.11.4
  • Type of virtual environment used (N/A | venv | virtualenv | conda | ...): N/A

Expected behaviour

Optimize performance for columns with large lists

Actual behaviour

Parquet file with 4000 rows, but with 6 columns where each is a list of floats with 1000 elements.
This parquet is almost unopenable, it takes 30 seconds to load each 50 rows. 15k rows never loads.

@pwang347 pwang347 added the bug Something isn't working label Dec 19, 2024
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