```
// instanceof not throw NullPointExcetion
if (result.getException() != null && result.getException() instanceof RpcException) 

// Examle:
public static void main(String[] args) {
    Exception e = null;
    if (e instanceof Exception) {
        System.out.println("instanceof");
    }
    System.out.println("success");
}
//Out:
success
```

* [2.7] Fix Nacos aggregate listen

* fix empty

* rename

* throw InterruptedException in FailoverClusterInvoker

* interrupt current thread when InterruptException occur

Co-authored-by: kefate <>

This reverts commit e8581fd7.

Co-authored-by: Nblake.qiu <blake.qiu@ly.com>

Co-authored-by: N呈铭 <beck.wcm@antgroup.com>

 #9910

Co-authored-by: N呈铭 <beck.wcm@antgroup.com>

Fix The first element of the queue cannot be deleted when an exception occurs in the method processWithAccessKeyLogger(#9978)

Fixes issue #9953

fixes #5122 & #8212 

fix #9824

also see #9786

add a new method for getting the number of consumer service addresses in the case of multiple registries. (#8026)
Co-authored-by: Nzhenyu zhang <hadleyzhang@gmail.com>

This reverts commit d5bcbcff.

fixes #9721