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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2020/12/01 10:28:28 UTC

[GitHub] [arrow] jorisvandenbossche commented on a change in pull request #8809: ARROW-10778: [Python] Fix RowGroupInfo.statistics for empty row groups

jorisvandenbossche commented on a change in pull request #8809:
URL: https://github.com/apache/arrow/pull/8809#discussion_r533291547



##########
File path: python/pyarrow/_dataset.pyx
##########
@@ -929,7 +929,8 @@ class RowGroupInfo:
         def name_stats(i):
             col = self.metadata.column(i)
 
-            if not col.statistics.has_min_max:
+            stats = col.statistics
+            if stats is None or not stats.has_min_max:

Review comment:
       Another option would be to check `col.is_stats_set`, but that results in `col.statistics` being None, so this is just as good




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