4.1.0 Upgrade Guide

Warning: Open issue with SMB File Reader/Writer

In 4.1.0, you may encounter errors with the SMB mode of the File Reader/Writer connector, relating to a third-party library. If you currently use the SMB mode for reading or writing files, it's best to wait until a patch version is available.

If you've already upgraded to 4.1.0 and you're encountering this issue, there is a workaround documented in the issue: #5327

Update log4j Library

As a consequence from the upgrade of log4j to log4j2, the old log4j.properties file will be replaced with the new log4j2.properties file. If there are any custom properties in your current log4j.properties file, these will need to be applied to the new log4j2.properties file.