zentol commented on a change in pull request #13020:
URL: https://github.com/apache/flink/pull/13020#discussion_r463493044
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/rest/handler/AbstractHandler.java
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@@ -114,6 +115,21 @@ protected void respondAsLeader(ChannelHandlerContext ctx,
RoutedRequest routedRe
log.trace("Received request " + httpRequest.uri() +
'.');
}
+ synchronized (this) {
+ if (terminationFuture != null) {
+ String errorMsg = "The handler instance for " +
untypedResponseMessageHeaders.getTargetRestEndpointURL()
+ + " had already been closed";
+ log.warn(errorMsg);
+ HandlerUtils.sendErrorResponse(
Review comment:
they are still useful for preventing something similar from happening
again.
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