zentol commented on a change in pull request #11639: [FLINK-16626][runtime]
Prevent REST handler from being closed more than once
URL: https://github.com/apache/flink/pull/11639#discussion_r404159512
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/webmonitor/WebMonitorEndpoint.java
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@@ -500,6 +500,15 @@ public WebMonitorEndpoint(
JobCancellationHeaders.getInstance(),
TerminationModeQueryParameter.TerminationMode.CANCEL);
+ // this is to prevent the same JobCancellationHandler from
being registered twice
+ // should be removed once the Yarn proxy can forward all REST
verbs
Review comment:
Let's directly refer to the resulting problem.
```suggestion
// use a separate handler for the yarn-cancel to ensure close()
is only called once
```
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