pitrou commented on a change in pull request #9730:
URL: https://github.com/apache/arrow/pull/9730#discussion_r596063732
##########
File path: docs/source/python/pandas.rst
##########
@@ -293,3 +293,19 @@ Used together, the call
will yield significantly lower memory usage in some scenarios. Without these
options, ``to_pandas`` will always double memory.
+
+Note that ``self_destruct=True`` is not guaranteed to save memory. Since the
+conversion happens column by column, memory is also freed column by column. But
+if multiple columns share an underlying allocation, then no memory will be
Review comment:
What does "share" mean here? Do you mean different arrays share the same
underlying buffer? How does that happen?
----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
