InvocationContext is not thread safe?

[htzhang2]

Two threads both write to InvocationContext in BeforeInvoke method:

1. Thread1:
   invocationCopntext.SetTemporaryData("temp", "value1");

2. Thread2:
   invocationCopntext.SetTemporaryData("temp", "value2");

This seems corrupt invocationContext.

Is there a thread safe solution?