Exception: Unable to convert the placeholder -2147483638 in a valid argument in multi-threading environment

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Exception: Unable to convert the placeholder -2147483638 in a valid argument in multi-threading environment

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Fixed in release 2.3.1

There was a race condition during the lambdaj's arguments creation process. 
More in detail an argument is shared by multiple threads in order to save 
memory space and gain in performance. What happened in your test case is that a 
thread tried to use an argument before the other thread that started the 
argument creation and binding process (the first one that called the on() 
construct on a given method of a given class) had time to complete it. In this 
case the second thread found the argument in an inconsistent situation and 
throw the Exception.

The problem has been fixed by synchronizing the argument creation process I 
mentioned.

Original comment by [email protected] on 13 Aug 2010 at 8:56

• Changed state: Fixed