showuon commented on a change in pull request #10794:
URL: https://github.com/apache/kafka/pull/10794#discussion_r654866143
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File path: clients/src/main/java/org/apache/kafka/common/requests/ApiError.java
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@@ -36,10 +37,16 @@
private final String message;
public static ApiError fromThrowable(Throwable t) {
+ Throwable throwableToBeEncode = t;
+ // Future will wrap the original exception with completionException,
which will return unexpected UNKNOWN_SERVER_ERROR.
+ if (t instanceof CompletionException) {
+ throwableToBeEncode = t.getCause();
Review comment:
fix 1: unwrap the `CompletionException` to get the original exception
inside. Even if we don't want the `NotControllerException` return back to
client, we need to know it to do some check.
##########
File path: clients/src/main/java/org/apache/kafka/common/requests/ApiError.java
##########
@@ -36,10 +37,16 @@
private final String message;
public static ApiError fromThrowable(Throwable t) {
+ Throwable throwableToBeEncode = t;
+ // Future will wrap the original exception with completionException,
which will return unexpected UNKNOWN_SERVER_ERROR.
+ if (t instanceof CompletionException) {
+ throwableToBeEncode = t.getCause();
Review comment:
fix 1: unwrap the CompletionException to get the original exception
inside.
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