"WARNING [https-jsse-nio-443-exec-5]" after upgrading OM Web Viewer 12.1 to build 232

Products

• Output Management Web Viewer

Issue/Introduction

Seeing many messages like:

WARNING [https-jsse-nio-443-exec-5] com.ca.corpui.faces.renderkit.html.HtmlTableRenderer.renderTable

We updated our production 12.1 Web Viewer to Build 232 and Java 9. Catalina.out contains lots of warning messages and there are only 2 users. 

Environment

Output Management Web Viewer 12.1
Apache Tomcat® 9

Cause

These messages are seen with newer versions of Tomcat. They originate from a lower level browser communication code called WCOM.

Resolution

The HTTP warnings are not a problem or any type of hindrance to Web Viewer processing. The only effect of these "Warnings" is the extra output in the Catalina log files.