Reset or Cancel NullPointerException with client 4.0.0

[Ramkumar92]

After upgrading to latest client version 4.0.0 we are observing a null pointer exception with Cancel & Reset requests

It appears this is resolved by adding a requestId to the request.

What is the significance of requestId? Other requests seem to be unaffected by this

[Ramkumar92]

++ @demirkayaender @shijiesheng

[demirkayaender]

We are looking at this. Thanks for raising.

[shijiesheng]

For reset, we do have some deduplication logic for optimization.

For cancellation, we return already cancelled error on duplication.

But these are all optional fields and should not raise NPE. I'll fix it in the next release.