Fix IndexError when printing DataFrames with empty partitions#12264
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Utkarshkarki wants to merge 1 commit intodask:mainfrom
Open
Fix IndexError when printing DataFrames with empty partitions#12264Utkarshkarki wants to merge 1 commit intodask:mainfrom
Utkarshkarki wants to merge 1 commit intodask:mainfrom
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Unit Test ResultsSee test report for an extended history of previous test failures. This is useful for diagnosing flaky tests. 0 tests ±0 0 ✅ ±0 0s ⏱️ ±0s Results for commit e0c1d4b. ± Comparison against base commit 825904a. |
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Fixes #12257
Problem
print(df) crashes with IndexError: index 0 is out of bounds when DataFrame operations produce empty partitions.
Solution
Added guard clause in process_val_weights to handle empty data gracefully. Returns unknown divisions instead of crashing, consistent with Dask's existing behavior.
Changes
Added early-return check for empty vals or
weights
arrays in
dask/dataframe/partitionquantiles.py