NullPointerException caused by many page refreshes
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                 Key: TAPESTRY-2037
                 URL: https://issues.apache.org/jira/browse/TAPESTRY-2037
             Project: Tapestry
          Issue Type: Bug
          Components: tapestry-core, tapestry-ioc
    Affects Versions: 5.0.7
         Environment: jdk 1.5
            Reporter: Howard M. Lewis Ship
            Assignee: Howard M. Lewis Ship
            Priority: Critical


This was reported on the mailing list.

In certain places, hitting the refresh button rapidly can cause a null pointer 
exception.

It is believed this is related to a JDK 1.5 bug:

http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6550283

Tapestry makes a few uses of ThreadLocal that are consistent with this pattern. 
 ThreadLocals are used to connect service proxies to perthread scope services.

We will locate all useages of ThreadLocal and, alas, synchronize access to them.

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