[python] Fix an ingestion corner-case with empty chunks

single-cell-data · Mar 15, 2024 · dc8809c · dc8809c
1 parent a016b9d
commit dc8809c
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/apis/python/src/tiledbsoma/io/ingest.py b/apis/python/src/tiledbsoma/io/ingest.py
@@ -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