jhirshman opened a new issue #7850: URL: https://github.com/apache/arrow/issues/7850
I have pandas dataframes that were serialized using pyarrow 0.15.1. I am now trying to upgrade to 1.0. When trying to read the old files with 1.0, I get the following error messages: - pyarrow.lib.ArrowInvalid: Cannot read pre-1.0.0 Union array with top-level validity bitmap - OSError: Expected IPC message of type unknown but got unknown Is there any chance I can modify the files to preserve compatibility? ---------------------------------------------------------------- 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]
