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https://issues.apache.org/jira/browse/GEODE-3434?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16131391#comment-16131391
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ASF GitHub Bot commented on GEODE-3434:
---------------------------------------

Github user jhuynh1 commented on a diff in the pull request:

    https://github.com/apache/geode/pull/712#discussion_r133843558
  
    --- Diff: 
extensions/geode-modules/src/main/java/org/apache/geode/modules/session/catalina/DeltaSession.java
 ---
    @@ -586,6 +610,20 @@ public int getSizeInBytes() {
         return serializedAttributes;
       }
     
    +  protected ConcurrentMap getAttributes() {
    +    try {
    +      Field field = getAttributesFieldObject();
    +      field.setAccessible(true);
    +      Map oldMap = (Map) field.get(this);
    +      ConcurrentMap newMap = new ConcurrentHashMap();
    --- End diff --
    
    I think you are correct, I believe we wrapped it incase somehow it was not 
a concurrent hash map but I guess that was being overly cautious.  I'll change 
them all to map


> Allow the modules to be interoperable with current and older versions of 
> tomcat 7 
> ----------------------------------------------------------------------------------
>
>                 Key: GEODE-3434
>                 URL: https://issues.apache.org/jira/browse/GEODE-3434
>             Project: Geode
>          Issue Type: Bug
>          Components: http session
>            Reporter: Jason Huynh
>            Assignee: Jason Huynh
>
> There was a change to the attribute field in tomcat (and we made the 
> necessary changes in geode session modules), but that does not allow our 
> session modules to work with older versions of tomcat 7.  We can probably 
> modify the classes to allow use with of the session module jars across 
> different versions of tomcat 7.
> We should probably add tests that run against older versions of geode to 
> allow backwards compatibility between a geode server and a session module jar 
> from a previous release.



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