0ed2c426_3____The_ClusterManager_object__Attribute
[Description] A regular expression used to filter, which session attributes will be replicated. An attribute will only be replicated, if its name matches this pattern. If the pattern is not set (default), all attributes are eligible for replication. As an example, the value ^(userName|sessionHistory)$ will only replicate the two session attributes named userName and sessionHistory. [Attribute] 
sessionAttributeFilter
Apache Tomcat 7 Configuration Reference (7.0.63) - The ClusterManager object