2.7.2 release note

[cvictory]

No description provided.

[codecov-io]

Codecov Report

Merging #4187 into 2.7.2-release will increase coverage by 0.11%.
The diff coverage is n/a.

@@                 Coverage Diff                 @@
##             2.7.2-release    #4187      +/-   ##
===================================================
+ Coverage            62.81%   62.92%   +0.11%     
- Complexity             504      506       +2     
===================================================
  Files                  769      769              
  Lines                33060    33060              
  Branches              5218     5218              
===================================================
+ Hits                 20765    20802      +37     
+ Misses                9895     9861      -34     
+ Partials              2400     2397       -3

Impacted Files	Coverage Δ	Complexity Δ
...apache/dubbo/common/config/ConfigurationUtils.java	64% <0%> (-8%)	0% <0%> (ø)
...g/apache/dubbo/registry/consul/ConsulRegistry.java	60.26% <0%> (+0.66%)	27% <0%> (ø)	⬇️
...dubbo/rpc/protocol/dubbo/CallbackServiceCodec.java	80.88% <0%> (+0.73%)	0% <0%> (ø)	⬇️
...he/dubbo/registry/multicast/MulticastRegistry.java	69.68% <0%> (+1.8%)	0% <0%> (ø)	⬇️
...exchange/support/header/HeaderExchangeHandler.java	67.21% <0%> (+2.45%)	0% <0%> (ø)	⬇️
...e/dubbo/remoting/transport/netty/NettyChannel.java	62.35% <0%> (+4.7%)	21% <0%> (+1%)	⬆️
...onfig/spring/extension/SpringExtensionFactory.java	85.36% <0%> (+4.87%)	0% <0%> (ø)	⬇️
.../org/apache/dubbo/remoting/ExecutionException.java	21.05% <0%> (+5.26%)	0% <0%> (ø)	⬇️
...ng/exchange/support/header/HeartbeatTimerTask.java	78.94% <0%> (+5.26%)	0% <0%> (ø)	⬇️
...ng/transport/dispatcher/all/AllChannelHandler.java	57.14% <0%> (+5.71%)	0% <0%> (ø)	⬇️
... and 4 more

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[chickenlj]

• Introduce CompletableFuture<Object> $invokeAsync for GenericService, now, for generic call, you can use:
  1. $invoke for sync method call with normal return type.
  2. $invokeAsync for async method call with CompletableFuture<T> signature.

please check #3163 and sample for more details.

• bugfix and enhancement Async optimization. #3287

[chickenlj]

LGTM