From SAS^® Studio 5.2, a library with thousands of Hadoop tables might not be displayed in the Libraries pane. The libref node will be displayed, but using the Refresh action or double clicking the libref node does not return any expansion of the library.

With the browser's network developer tools, the following message in the <viya url>/librariestree endpoint occurs: 

If you configure a reverse proxy or load balancer in front of the Apache HTTP Server, then increasing the time-out value for the server that is timing out might circumvent the issue.

Click the Hot Fix tab in this note for a link to instructions about accessing and applying the software update.

After applying the hot fix, a dialog box to SAS Studio with an alert of this timeout occurs.

Operating System and Release Information

Viya on Windows: An update for this issue is available for SAS Viya 3.5. For instructions on how to access and apply software updates, see the Updating Your SAS Viya software section in the SAS Viya 3.5 for Windows Deployment Guide at

Viya on Linux: An update for this issue is available for SAS Viya 3.5. For instructions on how to access and apply software updates, see the Updating Your SAS Viya software section in the SAS Viya 3.5 for Linux Deployment Guide at