Sidarth,

The log is reported from line 76 of class WindowCreditManager from method
restoreCredit[1].
The latter can be invoked in multiple code paths:
* when message is delivered with accept mode NONE and acquire mode
PRE_AQUIRED
* on receiving complete when message is delivered with accept mode NONE and
acquire mode NOT_AQUIRED
* on receiving flush
* after finishing handling of incoming bytes
* when subscriber cannot acquire message but already used the credits in
order to acquire
* when message cannot be delivered due to conversion issue from one
protocol into another
* on state changes in IO layer

Kind Regards,
Alex

[1]
https://github.com/apache/qpid-broker-j/blob/dcffe40f54366cb585344d0ec2d57e9dde6d62c8/broker-plugins/amqp-0-10-protocol/src/main/java/org/apache/qpid/server/protocol/v0_10/WindowCreditManager.java#L76



On Wed, 12 Jun 2019 at 23:09, sidarthsc <[email protected]>
wrote:

> Thanks Alex. Could you point to the broker code that logs this message? I'd
> like understand the context in which it's being logged, to see if I can
> reproduce the issue for you.
>
>
>
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