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Cause: Flow Control from a very high performance client. (Such as C++ or Vert-X). Clients that will have async flow control in general.

Consequence: A NPE could happen during a field check, causing consumers to stale.

Fix: Cache the field, avoiding a race during the check.

Result: The code is more reliable and not issues shown after the fix.

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Cause: Flow Control from a very high performance client. (Such as C++ or Vert-X). Clients that will have async flow control in general. Consequence: A NPE could happen during a field check, causing consumers to stale. Fix: Cache the field, avoiding a race during the check. Result: The code is more reliable and not issues shown after the fix.
Target Release:

AMQ 7.2.2.GA
Upstream Jira:
ARTEMIS-2146

During flow control in AMQP Core Flow control is disabled by setting an atomic integer to null.

During the handle the field is checked and during a race that could happen on high performant clients a NPE could happen, as seen on ARTEMIS-2146