1u0 commented on a change in pull request #9634: [hotfix][runtime] Streaming
runtime 1.9 improvements for dubuggability
URL: https://github.com/apache/flink/pull/9634#discussion_r321649978
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File path:
flink-streaming-java/src/main/java/org/apache/flink/streaming/runtime/tasks/SourceStreamTask.java
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@@ -114,6 +114,7 @@ protected void cleanup() {
protected void performDefaultAction(ActionContext context) throws
Exception {
// Against the usual contract of this method, this
implementation is not step-wise but blocking instead for
// compatibility reasons with the current source interface
(source functions run as a loop, not in steps).
+ sourceThread.setTaskDescription(getName());
Review comment:
Thanks for review @zhijiangW.
Afair, the story behind why it's done this way in the `master` branch,
because the `LegacySourceFunctionThread` is instantiated in the constructor of
`SourceStreamTask` and `StreamTask::getName()` method is not final.
To avoid a virtual method call in the constructor, @GJL has moved thread's
name setup to the `performDefaultAction()` method just before starting the
thread.
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