Known Issues in Apache Knox

Learn about the known issues in Knox, the impact or changes to the functionality, and the workaround.

CDPD-43897: In CDP 7.1.8, even if auto discovery is enabled for Livy for Spark 3, in the Knox gateway homepage, Livy for Spark 3 Web UI is missing.

This works when the URL is entered directly, as it is a display issue. Livy for Spark 3 service.xml file does not contain a metadata section. This section is needed so that Knox can display the appropriate section in its web UI.

CDPD-28431: Intermittent errors could be potentially encountered when Impala UI is accessed from multiple Knox nodes.

You must use a single Knox node to access Impala UI.

CDPD-3125: Logging out of Atlas does not manage the external authentication

At this time, Atlas does not communicate a log-out event with the external authentication management, Apache Knox. When you log out of Atlas, you can still open the instance of Atlas from the same web browser without re-authentication.

To prevent additional access to Atlas, close all browser windows and exit the browser.

CDPD-22785: Improvements and issues needs to be addressed in convert-topology knox cli command

None

CDPD-43069: For HA HDFS deployments, WebHDFS failover isn’t configured in the Knox topology, so requests directed to stand-by HDFS nodes will fail instead of failing-over to an active node.

Add the fail-over configuration for WebHDFS to the HaProvider in the affected Knox topology. <param> <name>WEBHDFS</name> <value>enabled=true;maxFailoverAttempts=3;failoverSleep=1000</value> </param>