srowen commented on a change in pull request #26094:
[SPARK-29442][SQL][PYSPARK] Set `default` mode should override the existing mode
URL: https://github.com/apache/spark/pull/26094#discussion_r334513859
##########
File path: python/pyspark/sql/readwriter.py
##########
@@ -593,7 +593,7 @@ def mode(self, saveMode):
* `append`: Append contents of this :class:`DataFrame` to existing
data.
* `overwrite`: Overwrite existing data.
- * `error` or `errorifexists`: Throw an exception if data already
exists.
+ * `error`, `errorifexists`, `default`: Throw an exception if data
already exists.
Review comment:
Interesting, I had also not heard of a "default" option. I wonder what the
use case is, as you would set this at the time of creation anyway. I think it's
fine to change the behavior, below, to truly make it the 'default'. If in
doubt, let's not mention it in docs.
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