kaknikhil commented on a change in pull request #491:  DL: Fix disk issue by 
using truncate guc 
URL: https://github.com/apache/madlib/pull/491#discussion_r396835067
 
 

 ##########
 File path: 
src/ports/postgres/modules/deep_learning/madlib_keras_fit_multiple_model.py_in
 ##########
 @@ -648,8 +651,9 @@ class FitMultipleModel():
 
         with SetGUC("dev_opt_unsafe_truncate_in_subtransaction", "on"):
             temp_model_table = unique_string('updated_model')
+            self.unlogged_table = self.unlogged_table if not 
self.is_final_training_call else ''
 
 Review comment:
   ```suggestion
   unlogged_table = self.unlogged_table if not self.is_final_training_call else 
''
   plpy.execute("""CREATE {unlogged_table} TABLE {temp_model_table} ( LIKE 
{self.model_output_table}""")
   ```

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