YARN-6747. TestFSAppStarvation.testPreemptionEnable fails intermittently. (Contributed by Miklos Szegedi)
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@ -62,6 +62,9 @@ public void setup() {
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ALLOC_FILE.getAbsolutePath());
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conf.setBoolean(FairSchedulerConfiguration.PREEMPTION, true);
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conf.setFloat(FairSchedulerConfiguration.PREEMPTION_THRESHOLD, 0f);
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// This effectively disables the update thread since we call update
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// explicitly on the main thread
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conf.setLong(FairSchedulerConfiguration.UPDATE_INTERVAL_MS, Long.MAX_VALUE);
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}
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@After
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@ -124,16 +127,17 @@ public void testPreemptionEnabled() throws Exception {
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// Wait for apps to be processed by MockPreemptionThread
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for (int i = 0; i < 6000; ++i) {
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if(preemptionThread.totalAppsAdded() >
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preemptionThread.uniqueAppsAdded()) {
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if(preemptionThread.totalAppsAdded() >=
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preemptionThread.uniqueAppsAdded() * 2) {
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break;
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}
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Thread.sleep(10);
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}
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assertTrue("Each app is marked as starved exactly once",
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preemptionThread.totalAppsAdded() >
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preemptionThread.uniqueAppsAdded());
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assertEquals("Each app should be marked as starved once" +
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" at each scheduler update above",
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preemptionThread.totalAppsAdded(),
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preemptionThread.uniqueAppsAdded() * 2);
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}
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/*
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