rmetzger commented on a change in pull request #13217:
URL: https://github.com/apache/flink/pull/13217#discussion_r475522684
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File path: flink-clients/src/main/java/org/apache/flink/client/ClientUtils.java
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@@ -111,4 +122,41 @@ public static void executeProgram(
Thread.currentThread().setContextClassLoader(contextClassLoader);
}
}
+
+ /**
+ * This method blocks until the job status is not INITIALIZING anymore.
+ * If the job is FAILED, it throws an CompletionException with the
failure cause.
+ * @param jobStatusSupplier supplier returning the job status.
+ */
+ public static void waitUntilJobInitializationFinished(
+ SupplierWithException<JobStatus, Exception> jobStatusSupplier,
+ SupplierWithException<JobResult, Exception> jobResultSupplier
+ ) throws CompletionException {
Review comment:
For some reason, I assumed that `CompletionExceptions` are the proper
way of signaling an error in futures. However, this assumption seems to be
false, any RuntimeException will be wrapped into a CompletionException by the
future.
I see solutions 2 here
a) declare the method throws any Throwable (then I have to use
`FutureUtils.uncheckedFunction` when I use it within futures, to wrap errors in
RuntimeExceptions
b) wrap any Throwable in a `RuntimeException` and remove the declaration on
the method.
Unless you tell suggest otherwise, I'll go with b) for now.
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