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https://issues.apache.org/jira/browse/AXIS2-3400?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Amila Chinthaka Suriarachchi resolved AXIS2-3400.
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Resolution: Fixed
fixed the issue. added a static counter to generate unique service names
> AxisService name not unique enough
> ----------------------------------
>
> Key: AXIS2-3400
> URL: https://issues.apache.org/jira/browse/AXIS2-3400
> Project: Axis 2.0 (Axis2)
> Issue Type: Bug
> Components: kernel
> Affects Versions: 1.3
> Reporter: David Poon
> Priority: Blocker
>
> The generated (client) stub implementation's populateAxisService() method
> creates the AxisService name using Object.hashCode() as a means to "ensure"
> uniqueness, for example:
> //creating the Service with a unique name
> _service = new org.apache.axis2.description.AxisService("IsisLocation" +
> this.hashCode());
> In our performance and stress test runs, we find that from time to time,
> "duplicate name found" errors would occur. We reuse the same configuration
> context instance over multiple client service invocations. The javadoc of
> java.lang.Object.hashCode() states that:
> "... It is not required that if two objects are unequal according to the
> java.lang.Object.equals(java.lang.Object) method, then calling the hashCode
> method on each of the two objects must produce distinct integer results. ...
> As much as is reasonably practical, the hashCode method defined by class
> Object does return distinct integers for distinct objects. (This is typically
> implemented by converting the internal address of the object into an integer,
> but this implementation technique is not required by the JavaTM programming
> language.)"
> In essence uniqueness is not guaranteed.
> Even though the Stub's finalize() method calls its own cleanup() method
> (which would remove the AxisService name), it is still possible for a
> duplicate name being generated whilst the other Stub is still in use (by
> another thread).
> Perhaps in addition to using hashCode(), a static incrementing counter could
> be appended to the generated name as well?
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