[Fix][Producer] Stop block request even if Value and Payload are both set

[gunli]

Motivation

Currently, if !p.options.DisableBlockIfQueueFull and msg.Value != nil && msg.Payload != nil, request will be blocked forever 'cause defer request.stopBlock() is set up after the verify logic.

if msg.Value != nil && msg.Payload != nil {
	p.log.Error("Can not set Value and Payload both")
	runCallback(request.callback, nil, request.msg, errors.New("can not set Value and Payload both"))
	return
}

// The block chan must be closed when returned with exception
defer request.stopBlock()

Here is the PR to stop block request even if Value and Payload are both set

Modifications

• pulsar/producer_partition.go

Verifying this change

• Make sure that the change passes the CI checks.

(Please pick either of the following options)

This change is a trivial rework / code cleanup without any test coverage.

(or)

This change is already covered by existing tests, such as (please describe tests).

(or)

This change added tests and can be verified as follows:

(example:)

• Added integration tests for end-to-end deployment with large payloads (10MB)
• Extended integration test for recovery after broker failure

Does this pull request potentially affect one of the following parts:

If yes was chosen, please highlight the changes

• Dependencies (does it add or upgrade a dependency): (no)
• The public API: (no)
• The schema: (no)
• The default values of configurations: (no)
• The wire protocol: (no)

Documentation

• Does this pull request introduce a new feature? (no)
• If yes, how is the feature documented? (not applicable / docs / GoDocs / not documented)
• If a feature is not applicable for documentation, explain why?
• If a feature is not documented yet in this PR, please create a followup issue for adding the documentation

[RobertIndie]

Looks good to me. Could you add a test?

[gunli]

Looks good to me. Could you add a test?

Test is added.