Fixes pydata#2198: Drop chunksizes when original_shape is different

Before this fix chunksizes was dropped even when original_shape was not found in encoding
Karel-van-de-Plassche · Jun 1, 2018 · d933522 · d933522
1 parent 16ef0cf
commit d933522
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/xarray/backends/netCDF4_.py b/xarray/backends/netCDF4_.py
@@ -204,7 +204,9 @@ def _extract_nc4_variable_encoding(variable, raise_on_invalid=False,
         chunks_too_big = any(
             c > d and dim not in unlimited_dims
             for c, d, dim in zip(chunksizes, variable.shape, variable.dims))
-        changed_shape = encoding.get('original_shape') != variable.shape
+        has_original_shape = encoding.get('original_shape') is not None
+        changed_shape = (has_original_shape and
+                         encoding.get('original_shape') != variable.shape)
         if chunks_too_big or changed_shape:
             del encoding['chunksizes']