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[Backport release-1.8] [python] Fix an ingestion corner case with empty chunks #2284

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merged 1 commit into from Mar 15, 2024
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[Backport release-1.8] [python] Fix an ingestion corner case with empty chunks #2284

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4 changes: 4 additions & 0 deletions apis/python/src/tiledbsoma/io/ingest.py
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Expand Up @@ -2192,6 +2192,10 @@ def _find_sparse_chunk_size_backed(
if start_index + chunk_size >= extent:
return chunk_size

# The entire chunk is unoccupied sparse; the caller can skip over it
if chunk_nnz == 0:
return chunk_size

# Compare initial estimate chunk nnz against the goal
ratio = chunk_nnz / goal_chunk_nnz

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