CrawlerSessionManagerValve only working with default host

[Matt Cosentino]

I have CrawlerSessionManagerValve set up at the Engine level, but it only seems 
to be working for the default host and not any other host. Is this expected 
behavior? Should I put it at the host level for each host?

Here is an example of how I have it set up:

    <Engine defaultHost="www.defaulthost.com" name="DefaultHost">
      <Realm className="org.apache.catalina.realm.LockOutRealm">
        <Realm className="org.apache.catalina.realm.UserDatabaseRealm"/>
      </Realm>
      <Host name="www.defaulthost.com" appBase="C:\web\defaulthost"/>
      <Host name="www.anotherhost.com" appBase="C:\web\anotherhost"/>
      <Valve className="org.apache.catalina.valves.CrawlerSessionManagerValve" 
sessionInactiveInterval="300"/>
   </Engine>

Tomcat 8.5.24

- Matt