[ISSUE #5684] request code should be short, to support serializeTypeCurrentRPC=ROCKETMQ

[yuz10]

Make sure set the target branch to develop

What is the purpose of the change

#5684

Brief changelog

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Verifying this change

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[RongtongJin]

Error: /home/runner/work/rocketmq/rocketmq/remoting/src/main/java/org/apache/rocketmq/remoting/netty/NettyRemotingServer.java:368:2: 'method def rcurly' has incorrect indentation level 1, expected level should be 4. [Indentation]

[codecov-commenter]

Codecov Report

Merging #5909 (3d6c096) into develop (f488e20) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             develop    #5909   +/-   ##
==========================================
  Coverage      43.37%   43.37%           
  Complexity      8809     8809           
==========================================
  Files           1090     1090           
  Lines          76412    76409    -3     
  Branches        9981     9981           
==========================================
+ Hits           33145    33146    +1     
- Misses         39118    39128   +10     
+ Partials        4149     4135   -14     

Impacted Files	Coverage Δ
...e/rocketmq/remoting/netty/NettyRemotingServer.java	59.53% <100.00%> (+0.26%)	⬆️
...rg/apache/rocketmq/common/stats/StatsSnapshot.java	84.61% <0.00%> (-15.39%)	⬇️
.../apache/rocketmq/common/stats/MomentStatsItem.java	38.09% <0.00%> (-9.53%)	⬇️
...va/org/apache/rocketmq/store/FlushDiskWatcher.java	81.25% <0.00%> (-9.38%)	⬇️
...ache/rocketmq/common/stats/MomentStatsItemSet.java	39.13% <0.00%> (-8.70%)	⬇️
...va/org/apache/rocketmq/common/stats/StatsItem.java	50.00% <0.00%> (-4.17%)	⬇️
...mq/broker/topic/TopicQueueMappingCleanService.java	12.43% <0.00%> (-3.63%)	⬇️
...org/apache/rocketmq/common/stats/StatsItemSet.java	41.79% <0.00%> (-2.99%)	⬇️
...c/main/java/org/apache/rocketmq/common/MixAll.java	41.44% <0.00%> (-1.29%)	⬇️
...rocketmq/client/impl/factory/MQClientInstance.java	48.44% <0.00%> (-0.60%)	⬇️
... and 11 more

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[echooymxq]

@yuz10 @RongtongJin I also encountered this problem, but i don't recommend doing it through such an indirect way.

I perfer to redefine the compatible code directly.
such as:

public static final int POP_MESSAGE = 200050;
public static final int _POP_MESSAGE = 3442;
public static final int ACK_MESSAGE = 200051;
public static final int _ACK_MESSAGE = 3443;
...

[yuz10]

@RongtongJin @echooymxq @HScarb Please review the code again.

[github-actions]

This PR is stale because it has been open for 365 days with no activity. It will be closed in 3 days if no further activity occurs. If you wish not to mark it as stale, please leave a comment in this PR.

[github-actions]

This PR was closed because it has been inactive for 3 days since being marked as stale.