hfutatzhanghb commented on PR #7539:
URL: https://github.com/apache/hadoop/pull/7539#issuecomment-2754184949
> Hi @hfutatzhanghb In the invokeMethod method of RouterAsyncRpcClient, the
client's threadLocalContext is reset to the async handler that processes the
request. Why is there still this issue?
Hi, @KeeProMise . Thanks for reviewing. Please refer to method
RouterRpcClient#addClientInfoToCallerContext.
Suppose we never reset CallerContext when using ARR, the origContext in
method addClientInfoToCallerContext would never be null and will conduct the
below logic:
```java
if (origContext != null) {
for (String part : origContext.split(contextFieldSeparator)) {
String[] keyValue =
part.split(CallerContext.Builder.KEY_VALUE_SEPARATOR, 2);
if (keyValue.length == 2) {
builder.appendIfAbsent(keyValue[0], keyValue[1]);
} else if (keyValue.length == 1) {
builder.append(keyValue[0]);
}
}
}
```
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