[bugfix] handling UTF8 in Druid dimensions (apache#4943)

michellethomas · May 23, 2018 · a358bfd · a358bfd
1 parent f9136e4
commit a358bfd
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/superset/connectors/druid/models.py b/superset/connectors/druid/models.py
@@ -1318,7 +1318,7 @@ def homogenize_types(df, groupby_cols):
         str instead of an object.
         """
         for col in groupby_cols:
-            df[col] = df[col].fillna('<NULL>').astype(str)
+            df[col] = df[col].fillna('<NULL>').astype('unicode')
         return df
 
     def query(self, query_obj):