GJL commented on a change in pull request #10255: [FLINK-14859][runtime] Avoid
leaking unassigned slots
URL: https://github.com/apache/flink/pull/10255#discussion_r348443847
##########
File path:
flink-runtime/src/test/java/org/apache/flink/runtime/scheduler/DefaultSchedulerTest.java
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@@ -295,6 +295,21 @@ public void skipDeploymentIfVertexVersionOutdated() {
assertThat(scheduler.requestJob().getState(),
is(equalTo(JobStatus.RUNNING)));
}
+ @Test
+ public void releaseSlotIfVertexVersionOutdated() {
Review comment:
That depends on the appender that is configured. log4j's `ConsoleAppender`
writes to `System.err` and `System.out`. Both of which are instances of
`PrintStream` which on my platform are initialized with `autoFlush=true`. If
`autoFlush` is enabled, `PrintStream` flushes on newline. The bottom line is
that it is not guaranteed to flush but it is likely.
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