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[Backport 2.x] Adding unit test for test isHeapUsageDominatedBySearch #6465

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Feb 23, 2023
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[Backport 2.x] Adding unit test for test isHeapUsageDominatedBySearch #6465

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16 changes: 16 additions & 0 deletions server/src/test/java/org/opensearch/search/backpressure/trackers/HeapUsageTrackerTests.java
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Original file line number Diff line number Diff line change
Expand Up @@ -12,13 +12,16 @@
import org.opensearch.action.search.SearchTask;
import org.opensearch.common.settings.ClusterSettings;
import org.opensearch.common.settings.Settings;
import org.opensearch.monitor.jvm.JvmStats;
import org.opensearch.search.backpressure.settings.SearchBackpressureSettings;
import org.opensearch.search.backpressure.settings.SearchShardTaskSettings;
import org.opensearch.search.backpressure.settings.SearchTaskSettings;
import org.opensearch.tasks.CancellableTask;
import org.opensearch.tasks.Task;
import org.opensearch.tasks.TaskCancellation;
import org.opensearch.test.OpenSearchTestCase;

import java.util.List;
import java.util.Optional;

import static org.mockito.Mockito.spy;
Expand Down Expand Up @@ -140,4 +143,17 @@ public void testNotEligibleForCancellation() {
reason = tracker.checkAndMaybeGetCancellationReason(task);
assertFalse(reason.isPresent());
}

public void testIsHeapUsageDominatedBySearch() {
assumeTrue("Skip the test if the hardware doesn't support heap usage tracking", HeapUsageTracker.isHeapTrackingSupported());

// task with 1 byte of heap usage so that it does not breach the threshold
CancellableTask task = createMockTaskWithResourceStats(SearchShardTask.class, 1, 1);
assertFalse(HeapUsageTracker.isHeapUsageDominatedBySearch(List.of(task), 0.5));

long totalHeap = JvmStats.jvmStats().getMem().getHeapMax().getBytes();
// task with heap usage of [totalHeap - 1] so that it breaches the threshold
task = createMockTaskWithResourceStats(SearchShardTask.class, 1, totalHeap - 1);
assertTrue(HeapUsageTracker.isHeapUsageDominatedBySearch(List.of(task), 0.5));
}
}