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Posted to common-commits@hadoop.apache.org by ha...@apache.org on 2018/09/24 19:08:11 UTC
[49/50] [abbrv] hadoop git commit: YARN-6672. Add NM preemption of
opportunistic containers when utilization goes high.
http://git-wip-us.apache.org/repos/asf/hadoop/blob/124b378f/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/scheduler/TestContainerSchedulerWithOverAllocation.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/scheduler/TestContainerSchedulerWithOverAllocation.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/scheduler/TestContainerSchedulerWithOverAllocation.java
index 183d868..a2d4aa8 100644
--- a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/scheduler/TestContainerSchedulerWithOverAllocation.java
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/scheduler/TestContainerSchedulerWithOverAllocation.java
@@ -20,12 +20,9 @@ package org.apache.hadoop.yarn.server.nodemanager.containermanager.scheduler;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.UnsupportedFileSystemException;
-import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.yarn.api.protocolrecords.GetContainerStatusesRequest;
import org.apache.hadoop.yarn.api.protocolrecords.StartContainerRequest;
import org.apache.hadoop.yarn.api.protocolrecords.StartContainersRequest;
-import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
-import org.apache.hadoop.yarn.api.records.ApplicationId;
import org.apache.hadoop.yarn.api.records.ContainerId;
import org.apache.hadoop.yarn.api.records.ContainerLaunchContext;
import org.apache.hadoop.yarn.api.records.ContainerState;
@@ -36,11 +33,8 @@ import org.apache.hadoop.yarn.api.records.Resource;
import org.apache.hadoop.yarn.api.records.ResourceUtilization;
import org.apache.hadoop.yarn.api.records.Token;
import org.apache.hadoop.yarn.conf.YarnConfiguration;
-import org.apache.hadoop.yarn.event.AsyncDispatcher;
-import org.apache.hadoop.yarn.event.DrainDispatcher;
import org.apache.hadoop.yarn.exceptions.ConfigurationException;
import org.apache.hadoop.yarn.exceptions.YarnException;
-import org.apache.hadoop.yarn.security.NMTokenIdentifier;
import org.apache.hadoop.yarn.server.nodemanager.ContainerExecutor;
import org.apache.hadoop.yarn.server.nodemanager.Context;
import org.apache.hadoop.yarn.server.nodemanager.DefaultContainerExecutor;
@@ -53,8 +47,6 @@ import org.apache.hadoop.yarn.server.nodemanager.containermanager.application.Ap
import org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container;
import org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch;
import org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainersLauncher;
-import org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainersMonitor;
-import org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainersMonitorImpl;
import org.apache.hadoop.yarn.server.nodemanager.executor.ContainerSignalContext;
import org.apache.hadoop.yarn.server.nodemanager.executor.ContainerStartContext;
import org.apache.hadoop.yarn.server.nodemanager.metrics.NodeManagerMetrics;
@@ -78,8 +70,6 @@ import java.util.concurrent.ConcurrentHashMap;
public class TestContainerSchedulerWithOverAllocation
extends BaseContainerManagerTest {
private static final int NM_OPPORTUNISTIC_QUEUE_LIMIT = 3;
- private static final int NM_CONTAINERS_VCORES = 4;
- private static final int NM_CONTAINERS_MEMORY_MB = 2048;
static {
LOG = LoggerFactory.getLogger(TestContainerSchedulerQueuing.class);
@@ -115,6 +105,11 @@ public class TestContainerSchedulerWithOverAllocation
conf.setFloat(
YarnConfiguration.NM_OVERALLOCATION_MEMORY_UTILIZATION_THRESHOLD,
0.75f);
+ conf.setFloat(YarnConfiguration.NM_OVERALLOCATION_CPU_PREEMPTION_THRESHOLD,
+ 0.8f);
+ conf.setFloat(
+ YarnConfiguration.NM_OVERALLOCATION_MEMORY_PREEMPTION_THRESHOLD, 0.8f);
+ conf.setInt(YarnConfiguration.NM_OVERALLOCATION_PREEMPTION_CPU_COUNT, 2);
// disable the monitor thread in ContainersMonitor to allow control over
// when opportunistic containers are launched with over-allocation
conf.setBoolean(YarnConfiguration.NM_CONTAINER_MONITOR_ENABLED, false);
@@ -134,9 +129,9 @@ public class TestContainerSchedulerWithOverAllocation
StartContainersRequest allRequests = StartContainersRequest.newInstance(
new ArrayList<StartContainerRequest>() { {
add(createStartContainerRequest(0,
- BuilderUtils.newResource(1024, 1), false));
+ BuilderUtils.newResource(1024, 1), ExecutionType.OPPORTUNISTIC));
add(createStartContainerRequest(1,
- BuilderUtils.newResource(1024, 1), true));
+ BuilderUtils.newResource(1024, 1), ExecutionType.GUARANTEED));
} }
);
containerManager.startContainers(allRequests);
@@ -171,9 +166,9 @@ public class TestContainerSchedulerWithOverAllocation
new ArrayList<StartContainerRequest>() {
{
add(createStartContainerRequest(0,
- BuilderUtils.newResource(1024, 1), true));
+ BuilderUtils.newResource(1024, 1), ExecutionType.GUARANTEED));
add(createStartContainerRequest(1,
- BuilderUtils.newResource(824, 1), true));
+ BuilderUtils.newResource(824, 1), ExecutionType.GUARANTEED));
}
}
));
@@ -191,11 +186,9 @@ public class TestContainerSchedulerWithOverAllocation
containerManager.startContainers(StartContainersRequest.newInstance(
Collections.singletonList(
createStartContainerRequest(2,
- BuilderUtils.newResource(512, 1), false))
+ BuilderUtils.newResource(512, 1), ExecutionType.OPPORTUNISTIC))
));
-
- ((LongRunningContainerSimulatingContainersManager) containerManager)
- .drainAsyncEvents();
+ ((ContainerManagerForTest) containerManager).drainAsyncEvents();
// this container is not expected to be started immediately because
// opportunistic containers cannot be started if the node would be
@@ -212,8 +205,8 @@ public class TestContainerSchedulerWithOverAllocation
});
// try to start opportunistic containers out of band.
- ((LongRunningContainerSimulatingContainersManager) containerManager)
- .startContainersOutOfBandUponLowUtilization();
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
// this container is expected to be started immediately because there
// are (memory: 1024, vcore: 0.625) available based on over-allocation
@@ -247,9 +240,9 @@ public class TestContainerSchedulerWithOverAllocation
new ArrayList<StartContainerRequest>() {
{
add(createStartContainerRequest(0,
- BuilderUtils.newResource(1024, 1), true));
+ BuilderUtils.newResource(1024, 1), ExecutionType.GUARANTEED));
add(createStartContainerRequest(1,
- BuilderUtils.newResource(824, 1), true));
+ BuilderUtils.newResource(824, 1), ExecutionType.GUARANTEED));
}
}
));
@@ -267,17 +260,14 @@ public class TestContainerSchedulerWithOverAllocation
containerManager.startContainers(StartContainersRequest.newInstance(
Collections.singletonList(
createStartContainerRequest(2,
- BuilderUtils.newResource(512, 1), false))
+ BuilderUtils.newResource(512, 1), ExecutionType.OPPORTUNISTIC))
));
// try to start opportunistic containers out of band because they can
// not be launched at container scheduler event if the node would be
// over-allocated.
- ((LongRunningContainerSimulatingContainersManager) containerManager)
- .startContainersOutOfBandUponLowUtilization();
-
- ((LongRunningContainerSimulatingContainersManager) containerManager)
- .drainAsyncEvents();
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
// this container will not start immediately because there is not
// enough resource available at the moment either in terms of
@@ -312,9 +302,9 @@ public class TestContainerSchedulerWithOverAllocation
new ArrayList<StartContainerRequest>() {
{
add(createStartContainerRequest(0,
- BuilderUtils.newResource(1024, 1), true));
+ BuilderUtils.newResource(1024, 1), ExecutionType.GUARANTEED));
add(createStartContainerRequest(1,
- BuilderUtils.newResource(1024, 1), true));
+ BuilderUtils.newResource(1024, 1), ExecutionType.GUARANTEED));
}
}
));
@@ -331,11 +321,9 @@ public class TestContainerSchedulerWithOverAllocation
containerManager.startContainers(StartContainersRequest.newInstance(
Collections.singletonList(
createStartContainerRequest(2,
- BuilderUtils.newResource(512, 1), false))
+ BuilderUtils.newResource(512, 1), ExecutionType.OPPORTUNISTIC))
));
-
- ((LongRunningContainerSimulatingContainersManager) containerManager)
- .drainAsyncEvents();
+ ((ContainerManagerForTest) containerManager).drainAsyncEvents();
// this container is not expected to be started immediately because
// opportunistic containers cannot be started if the node would be
@@ -352,8 +340,8 @@ public class TestContainerSchedulerWithOverAllocation
});
// try to start opportunistic containers out of band.
- ((LongRunningContainerSimulatingContainersManager) containerManager)
- .startContainersOutOfBandUponLowUtilization();
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
// this container is expected to be started because there is resources
// available because the actual utilization is very low
@@ -384,9 +372,9 @@ public class TestContainerSchedulerWithOverAllocation
new ArrayList<StartContainerRequest>() {
{
add(createStartContainerRequest(0,
- BuilderUtils.newResource(1024, 1), true));
+ BuilderUtils.newResource(1024, 1), ExecutionType.GUARANTEED));
add(createStartContainerRequest(1,
- BuilderUtils.newResource(1024, 1), true));
+ BuilderUtils.newResource(1024, 1), ExecutionType.GUARANTEED));
}
}
));
@@ -406,13 +394,11 @@ public class TestContainerSchedulerWithOverAllocation
for (int a = 0; a < NM_OPPORTUNISTIC_QUEUE_LIMIT + 1; a++) {
moreContainerRequests.add(
createStartContainerRequest(2 + a,
- BuilderUtils.newResource(512, 1), false));
+ BuilderUtils.newResource(512, 1), ExecutionType.OPPORTUNISTIC));
}
containerManager.startContainers(
StartContainersRequest.newInstance(moreContainerRequests));
-
- ((LongRunningContainerSimulatingContainersManager) containerManager)
- .drainAsyncEvents();
+ ((ContainerManagerForTest) containerManager).drainAsyncEvents();
// All OPPORTUNISTIC containers but the last one should be queued.
// The last OPPORTUNISTIC container to launch should be killed.
@@ -454,9 +440,9 @@ public class TestContainerSchedulerWithOverAllocation
new ArrayList<StartContainerRequest>() {
{
add(createStartContainerRequest(0,
- BuilderUtils.newResource(1200, 1), true));
+ BuilderUtils.newResource(1200, 1), ExecutionType.GUARANTEED));
add(createStartContainerRequest(1,
- BuilderUtils.newResource(400, 1), true));
+ BuilderUtils.newResource(400, 1), ExecutionType.GUARANTEED));
}
}
));
@@ -473,7 +459,7 @@ public class TestContainerSchedulerWithOverAllocation
containerManager.startContainers(StartContainersRequest.newInstance(
Collections.singletonList(
createStartContainerRequest(2,
- BuilderUtils.newResource(400, 1), false))
+ BuilderUtils.newResource(400, 1), ExecutionType.OPPORTUNISTIC))
));
// the OPPORTUNISTIC container can be safely launched even though
@@ -507,9 +493,11 @@ public class TestContainerSchedulerWithOverAllocation
new ArrayList<StartContainerRequest>() {
{
add(createStartContainerRequest(0,
- BuilderUtils.newResource(1024, 1), false));
+ BuilderUtils.newResource(1024, 1),
+ ExecutionType.OPPORTUNISTIC));
add(createStartContainerRequest(1,
- BuilderUtils.newResource(824, 1), false));
+ BuilderUtils.newResource(824, 1),
+ ExecutionType.OPPORTUNISTIC));
}
}
));
@@ -527,7 +515,7 @@ public class TestContainerSchedulerWithOverAllocation
containerManager.startContainers(StartContainersRequest.newInstance(
Collections.singletonList(
createStartContainerRequest(2,
- BuilderUtils.newResource(512, 1), true))
+ BuilderUtils.newResource(512, 1), ExecutionType.GUARANTEED))
));
// the GUARANTEED container is expected be launched immediately without
@@ -561,9 +549,11 @@ public class TestContainerSchedulerWithOverAllocation
new ArrayList<StartContainerRequest>() {
{
add(createStartContainerRequest(0,
- BuilderUtils.newResource(1024, 1), false));
+ BuilderUtils.newResource(1024, 1),
+ ExecutionType.OPPORTUNISTIC));
add(createStartContainerRequest(1,
- BuilderUtils.newResource(824, 1), false));
+ BuilderUtils.newResource(824, 1),
+ ExecutionType.OPPORTUNISTIC));
}
}
));
@@ -581,7 +571,7 @@ public class TestContainerSchedulerWithOverAllocation
containerManager.startContainers(StartContainersRequest.newInstance(
Collections.singletonList(
createStartContainerRequest(2,
- BuilderUtils.newResource(512, 1), true))
+ BuilderUtils.newResource(512, 1), ExecutionType.GUARANTEED))
));
BaseContainerManagerTest.waitForContainerSubState(containerManager,
@@ -631,16 +621,18 @@ public class TestContainerSchedulerWithOverAllocation
new ArrayList<StartContainerRequest>() {
{
add(createStartContainerRequest(0,
- BuilderUtils.newResource(1024, 1), false));
+ BuilderUtils.newResource(1024, 1),
+ ExecutionType.OPPORTUNISTIC));
add(createStartContainerRequest(1,
- BuilderUtils.newResource(1024, 1), false));
+ BuilderUtils.newResource(1024, 1),
+ ExecutionType.OPPORTUNISTIC));
add(createStartContainerRequest(2,
- BuilderUtils.newResource(1024, 1), false));
+ BuilderUtils.newResource(1024, 1),
+ ExecutionType.OPPORTUNISTIC));
}
}
));
- ((LongRunningContainerSimulatingContainersManager) containerManager)
- .drainAsyncEvents();
+ ((ContainerManagerForTest) containerManager).drainAsyncEvents();
// Two OPPORTUNISTIC containers are expected to start with the
// unallocated resources, but one will be queued because no
@@ -655,8 +647,8 @@ public class TestContainerSchedulerWithOverAllocation
// try to start the opportunistic container out of band because it can
// not be launched at container scheduler event if the node would be
// over-allocated.
- ((LongRunningContainerSimulatingContainersManager) containerManager)
- .startContainersOutOfBandUponLowUtilization();
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
// now the queued opportunistic container should also start
BaseContainerManagerTest.waitForContainerSubState(containerManager,
@@ -671,7 +663,7 @@ public class TestContainerSchedulerWithOverAllocation
containerManager.startContainers(StartContainersRequest.newInstance(
Collections.singletonList(
createStartContainerRequest(3,
- BuilderUtils.newResource(512, 1), true))
+ BuilderUtils.newResource(512, 1), ExecutionType.GUARANTEED))
));
// the GUARANTEED container is expected be launched immediately without
@@ -690,83 +682,6 @@ public class TestContainerSchedulerWithOverAllocation
}
/**
- * Start four OPPORTUNISTIC containers which in aggregates exceeds the
- * capacity of the node. The real resource utilization of the first two
- * OPPORTUNISTIC containers are high whereas that of the latter two are
- * almost zero. Then try to start a GUARANTEED container. The GUARANTEED
- * container will eventually start running after preempting the third
- * and fourth OPPORTUNISTIC container (which releases no resources) and
- * then the second OPPORTUNISTIC container.
- */
- public void
- testKillOppContainersConservativelyWithOverallocationHighUtilization()
- throws Exception {
- containerManager.start();
-
- containerManager.startContainers(StartContainersRequest.newInstance(
- new ArrayList<StartContainerRequest>() {
- {
- add(createStartContainerRequest(0,
- BuilderUtils.newResource(1024, 1), false));
- add(createStartContainerRequest(1,
- BuilderUtils.newResource(1024, 1), false));
- add(createStartContainerRequest(2,
- BuilderUtils.newResource(512, 1), false));
- add(createStartContainerRequest(3,
- BuilderUtils.newResource(1024, 1), false));
- }
- }
- ));
- // All four GUARANTEED containers are all expected to start
- // because the containers utilization is low (0 at the point)
- BaseContainerManagerTest.waitForContainerSubState(containerManager,
- createContainerId(0), ContainerSubState.RUNNING);
- BaseContainerManagerTest.waitForContainerSubState(containerManager,
- createContainerId(1), ContainerSubState.RUNNING);
- BaseContainerManagerTest.waitForContainerSubState(containerManager,
- createContainerId(2), ContainerSubState.RUNNING);
- BaseContainerManagerTest.waitForContainerSubState(containerManager,
- createContainerId(3), ContainerSubState.RUNNING);
-
- // the containers utilization is at the overallocation threshold
- setContainerResourceUtilization(
- ResourceUtilization.newInstance(1536, 0, 1.0f/2));
-
- // try to start a GUARANTEED container when there's nothing left unallocated
- containerManager.startContainers(StartContainersRequest.newInstance(
- Collections.singletonList(
- createStartContainerRequest(4,
- BuilderUtils.newResource(1024, 1), true))
- ));
-
- BaseContainerManagerTest.waitForContainerSubState(containerManager,
- createContainerId(4), ContainerSubState.RUNNING);
- GetContainerStatusesRequest statRequest = GetContainerStatusesRequest.
- newInstance(new ArrayList<ContainerId>() {
- {
- add(createContainerId(0));
- add(createContainerId(1));
- add(createContainerId(2));
- add(createContainerId(3));
- add(createContainerId(4));
- }
- });
- List<ContainerStatus> containerStatuses = containerManager
- .getContainerStatuses(statRequest).getContainerStatuses();
- for (ContainerStatus status : containerStatuses) {
- if (status.getContainerId().equals(createContainerId(0)) ||
- status.getContainerId().equals(createContainerId(4))) {
- Assert.assertEquals(
- ContainerSubState.RUNNING, status.getContainerSubState());
- } else {
- Assert.assertTrue(status.getDiagnostics().contains(
- "Container Killed to make room for Guaranteed Container"));
- }
- System.out.println("\nStatus : [" + status + "]\n");
- }
- }
-
- /**
* Start two OPPORTUNISTIC containers followed by one GUARANTEED container,
* which in aggregate exceeds the capacity of the node. The first two
* OPPORTUNISTIC containers use almost no resources whereas the GUARANTEED
@@ -784,11 +699,11 @@ public class TestContainerSchedulerWithOverAllocation
new ArrayList<StartContainerRequest>() {
{
add(createStartContainerRequest(0,
- BuilderUtils.newResource(512, 1), false));
+ BuilderUtils.newResource(512, 1), ExecutionType.OPPORTUNISTIC));
add(createStartContainerRequest(1,
- BuilderUtils.newResource(512, 1), false));
+ BuilderUtils.newResource(512, 1), ExecutionType.OPPORTUNISTIC));
add(createStartContainerRequest(2,
- BuilderUtils.newResource(1024, 1), true));
+ BuilderUtils.newResource(1024, 1), ExecutionType.GUARANTEED));
}
}
));
@@ -810,9 +725,9 @@ public class TestContainerSchedulerWithOverAllocation
new ArrayList<StartContainerRequest>() {
{
add(createStartContainerRequest(3,
- BuilderUtils.newResource(512, 1), false));
+ BuilderUtils.newResource(512, 1), ExecutionType.OPPORTUNISTIC));
add(createStartContainerRequest(4,
- BuilderUtils.newResource(800, 1), false));
+ BuilderUtils.newResource(800, 1), ExecutionType.OPPORTUNISTIC));
}
}
));
@@ -831,8 +746,7 @@ public class TestContainerSchedulerWithOverAllocation
BaseContainerManagerTest.waitForContainerSubState(containerManager,
createContainerId(2), ContainerSubState.DONE);
- ((LongRunningContainerSimulatingContainersManager) containerManager)
- .drainAsyncEvents();
+ ((ContainerManagerForTest) containerManager).drainAsyncEvents();
// only one OPPORTUNISTIC container is start because no over-allocation
// is allowed to start OPPORTUNISTIC containers at container finish event.
@@ -854,10 +768,8 @@ public class TestContainerSchedulerWithOverAllocation
// now try to start the OPPORTUNISTIC container that was queued because
// we don't start OPPORTUNISTIC containers at container finish event if
// the node would be over-allocated
- ((LongRunningContainerSimulatingContainersManager) containerManager)
- .startContainersOutOfBandUponLowUtilization();
- ((LongRunningContainerSimulatingContainersManager) containerManager)
- .drainAsyncEvents();
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
BaseContainerManagerTest.waitForContainerSubState(containerManager,
createContainerId(4), ContainerSubState.RUNNING);
verifyContainerStatuses(new HashMap<ContainerId, ContainerSubState>() {
@@ -884,7 +796,7 @@ public class TestContainerSchedulerWithOverAllocation
containerManager.startContainers(StartContainersRequest.newInstance(
Collections.singletonList(
createStartContainerRequest(0,
- BuilderUtils.newResource(2048, 4), true))));
+ BuilderUtils.newResource(2048, 4), ExecutionType.GUARANTEED))));
BaseContainerManagerTest.waitForContainerSubState(containerManager,
createContainerId(0), ContainerSubState.RUNNING);
@@ -897,9 +809,9 @@ public class TestContainerSchedulerWithOverAllocation
new ArrayList<StartContainerRequest>() {
{
add(createStartContainerRequest(1,
- BuilderUtils.newResource(512, 1), false));
+ BuilderUtils.newResource(512, 1), ExecutionType.OPPORTUNISTIC));
add(createStartContainerRequest(2,
- BuilderUtils.newResource(512, 1), false));
+ BuilderUtils.newResource(512, 1), ExecutionType.OPPORTUNISTIC));
}
}
));
@@ -913,8 +825,8 @@ public class TestContainerSchedulerWithOverAllocation
ResourceUtilization.newInstance(1536, 0, 1.0f/2));
// try to start opportunistic containers out of band.
- ((LongRunningContainerSimulatingContainersManager)containerManager)
- .startContainersOutOfBandUponLowUtilization();
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
// no containers in queue are expected to be launched because the
// containers utilization is not below the over-allocation threshold
@@ -934,8 +846,8 @@ public class TestContainerSchedulerWithOverAllocation
setContainerResourceUtilization(
ResourceUtilization.newInstance(512, 0, 1.0f/8));
- ((LongRunningContainerSimulatingContainersManager)containerManager)
- .startContainersOutOfBandUponLowUtilization();
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
// the two OPPORTUNISTIC containers are expected to be launched
BaseContainerManagerTest.waitForContainerSubState(containerManager,
@@ -952,11 +864,332 @@ public class TestContainerSchedulerWithOverAllocation
});
}
+ /**
+ * Start a GUARANTEED container, an OPPORTUNISTIC container, a GUARANTEED
+ * container and another OPPORTUNISTIC container in order. When the node
+ * memory utilization is over its preemption threshold, the two OPPORTUNISTIC
+ * containers should be killed.
+ */
+ @Test
+ public void testPreemptOpportunisticContainersUponHighMemoryUtilization()
+ throws Exception {
+ containerManager.start();
+
+ // try to start four containers at once. the first GUARANTEED container
+ // that requests (1024 MB, 1 vcore) can be launched because there is
+ // (2048 MB, 4 vcores) unallocated. The second container, which is
+ // OPPORTUNISTIC, can also be launched because it asks for 512 MB, 1 vcore
+ // which is less than what is left unallocated after launching the first
+ // one GUARANTEED container, (1024 MB, 3 vcores).
+ // The 3rd container, which is GUARANTEED, can also be launched because
+ // the node resource utilization utilization is zero such that
+ // over-allocation kicks in. The 4th one, an OPPORTUNISTIC container,
+ // will be queued because OPPORTUNISTIC containers can only be
+ // launched when node resource utilization is checked, if launching them
+ // would cause node over-allocation.
+ containerManager.startContainers(StartContainersRequest.newInstance(
+ new ArrayList<StartContainerRequest>() {
+ {
+ add(createStartContainerRequest(0,
+ BuilderUtils.newResource(1024, 1), ExecutionType.GUARANTEED));
+ add(createStartContainerRequest(1,
+ BuilderUtils.newResource(512, 1), ExecutionType.OPPORTUNISTIC));
+ add(createStartContainerRequest(2,
+ BuilderUtils.newResource(1024, 1), ExecutionType.GUARANTEED));
+ add(createStartContainerRequest(3,
+ BuilderUtils.newResource(300, 1), ExecutionType.OPPORTUNISTIC));
+ }
+ }
+ ));
+ ((ContainerManagerForTest) containerManager).drainAsyncEvents();
+
+ // the first three containers are all expected to start
+ BaseContainerManagerTest.waitForContainerSubState(containerManager,
+ createContainerId(0), ContainerSubState.RUNNING);
+ BaseContainerManagerTest.waitForContainerSubState(containerManager,
+ createContainerId(1), ContainerSubState.RUNNING);
+ BaseContainerManagerTest.waitForContainerSubState(containerManager,
+ createContainerId(2), ContainerSubState.RUNNING);
+ BaseContainerManagerTest.waitForContainerSubState(containerManager,
+ createContainerId(3), ContainerSubState.SCHEDULED);
+
+ // try to check node resource utilization and start the second
+ // opportunistic containers out of band. Because the node resource
+ // utilization is zero at the moment, over-allocation will kick in
+ // and the container will be launched.
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
+ BaseContainerManagerTest.waitForContainerSubState(containerManager,
+ createContainerId(3), ContainerSubState.RUNNING);
+
+ // the containers memory utilization is over the preemption threshold
+ // (2048 > 2048 * 0.8 = 1638.4)
+ setContainerResourceUtilization(
+ ResourceUtilization.newInstance(2048, 0, 0.5f));
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
+
+ // (2048 - 2048 * 0.8) = 409.6 MB of memory needs to be reclaimed,
+ // which shall result in both OPPORTUNISTIC containers to be preempted.
+ // (Preempting the most recently launched OPPORTUNISTIC container, that
+ // is the 4th container, would only release at most 300 MB of memory)
+ BaseContainerManagerTest.waitForContainerSubState(containerManager,
+ createContainerId(1), ContainerSubState.DONE);
+ BaseContainerManagerTest.waitForContainerSubState(containerManager,
+ createContainerId(3), ContainerSubState.DONE);
+
+ verifyContainerStatuses(new HashMap<ContainerId, ContainerSubState>() {
+ {
+ put(createContainerId(0), ContainerSubState.RUNNING);
+ put(createContainerId(1), ContainerSubState.DONE);
+ put(createContainerId(2), ContainerSubState.RUNNING);
+ put(createContainerId(3), ContainerSubState.DONE);
+ }
+ });
+
+ }
+
+ /**
+ * Start a GUARANTEED container followed by an OPPORTUNISTIC container, which
+ * in aggregates does not take more than the capacity of the node.
+ * When the node memory utilization is above the preemption threshold, the
+ * OPPORTUNISTIC container should not be killed because the node is not being
+ * over-allocated.
+ */
+ @Test
+ public void testNoPreemptionUponHighMemoryUtilizationButNoOverallocation()
+ throws Exception {
+ containerManager.start();
+
+ // start two containers, one GUARANTEED and one OPPORTUNISTIC, that together
+ // take up all the allocations (2048 MB of memory and 4 vcores available on
+ // the node). They can be both launched immediately because there are enough
+ // allocations to do so. When the two containers fully utilize their
+ // resource requests, that is, the node is being 100% utilized, the
+ // OPPORTUNISTIC container shall continue to run because the node is
+ // not be over-allocated.
+ containerManager.startContainers(StartContainersRequest.newInstance(
+ new ArrayList<StartContainerRequest>() {
+ {
+ add(createStartContainerRequest(0,
+ BuilderUtils.newResource(1024, 2),
+ ExecutionType.GUARANTEED));
+ add(createStartContainerRequest(1,
+ BuilderUtils.newResource(1024, 2),
+ ExecutionType.OPPORTUNISTIC));
+ }
+ }
+ ));
+ // both containers shall be launched immediately because there are
+ // enough allocations to do so
+ BaseContainerManagerTest.waitForContainerSubState(containerManager,
+ createContainerId(0), ContainerSubState.RUNNING);
+ BaseContainerManagerTest.waitForContainerSubState(containerManager,
+ createContainerId(1), ContainerSubState.RUNNING);
+
+ // the node is being fully utilized, which is above the preemption
+ // threshold (2048 * 0.75 = 1536 MB, 1.0f)
+ setContainerResourceUtilization(
+ ResourceUtilization.newInstance(2048, 0, 1.0f));
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
+
+ // no containers shall be preempted because the node is not being
+ // over-allocated so it is safe to allow the node to be fully utilized
+ verifyContainerStatuses(new HashMap<ContainerId, ContainerSubState>() {
+ {
+ put(createContainerId(0), ContainerSubState.RUNNING);
+ put(createContainerId(1), ContainerSubState.RUNNING);
+ }
+ });
+ }
+
+ /**
+ * Start a GUARANTEED container, an OPPORTUNISTIC container, a GUARANTEED
+ * container and another OPPORTUNISTIC container in order. When the node
+ * cpu utilization is over its preemption threshold a few times in a row,
+ * the two OPPORTUNISTIC containers should be killed one by one.
+ */
+ @Test
+ public void testPreemptionUponHighCPUUtilization() throws Exception {
+ containerManager.start();
+
+ // try to start 4 containers at once. The first container, can be
+ // safely launched immediately (2048 MB, 4 vcores left unallocated).
+ // The second container, can also be launched immediately, because
+ // there is enough resources unallocated after launching the first
+ // container (2048 - 512 = 1536 MB, 4 - 2 = 2 vcores). After launching
+ // the first two containers, there are 1024 MBs of memory and 1 vcore
+ // left unallocated, so there is not enough allocation to launch the
+ // third container. But because the third container is GUARANTEED and
+ // the node resource utilization is zero, we can launch it based on
+ // over-allocation (the projected resource utilization will be 512 MB
+ // of memory and 2 vcores, below the over-allocation threshold)
+ // The fourth container, which is OPPORTUNISTIC, will be queued because
+ // OPPORTUNISTIC containers can not be launched based on over-allocation
+ // upon container start requests (they can only be launched when node
+ // resource utilization is checked in ContainersMonitor)
+ containerManager.startContainers(StartContainersRequest.newInstance(
+ new ArrayList<StartContainerRequest>() {
+ {
+ add(createStartContainerRequest(0,
+ BuilderUtils.newResource(512, 2), ExecutionType.GUARANTEED));
+ add(createStartContainerRequest(1,
+ BuilderUtils.newResource(512, 1), ExecutionType.OPPORTUNISTIC));
+ add(createStartContainerRequest(2,
+ BuilderUtils.newResource(512, 2), ExecutionType.GUARANTEED));
+ add(createStartContainerRequest(3,
+ BuilderUtils.newResource(512, 1), ExecutionType.OPPORTUNISTIC));
+ }
+ }
+ ));
+ ((ContainerManagerForTest) containerManager).drainAsyncEvents();
+ // the first three containers are expected to start. The first two
+ // can be launched based on free allocation, the third can be
+ // launched based on over-allocation
+ BaseContainerManagerTest.waitForContainerSubState(containerManager,
+ createContainerId(0), ContainerSubState.RUNNING);
+ BaseContainerManagerTest.waitForContainerSubState(containerManager,
+ createContainerId(1), ContainerSubState.RUNNING);
+ BaseContainerManagerTest.waitForContainerSubState(containerManager,
+ createContainerId(2), ContainerSubState.RUNNING);
+
+ // try to start second opportunistic containers out of band.
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
+
+ // the second opportunistic container is expected to start because
+ // the node resource utilization is at zero, the projected utilization
+ // is 512 MBs of memory and 1 vcore
+ BaseContainerManagerTest.waitForContainerSubState(containerManager,
+ createContainerId(3), ContainerSubState.RUNNING);
+
+ final float fullCpuUtilization = 1.0f;
+
+ // the containers CPU utilization is over its preemption threshold (0.8f)
+ // for the first time
+ setContainerResourceUtilization(
+ ResourceUtilization.newInstance(2048, 0, fullCpuUtilization));
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
+
+ // all containers should continue to be running because we don't
+ // preempt OPPORTUNISTIC containers right away
+ verifyContainerStatuses(new HashMap<ContainerId, ContainerSubState>() {
+ {
+ put(createContainerId(0), ContainerSubState.RUNNING);
+ put(createContainerId(1), ContainerSubState.RUNNING);
+ put(createContainerId(2), ContainerSubState.RUNNING);
+ put(createContainerId(3), ContainerSubState.RUNNING);
+ }
+ });
+
+ // the containers CPU utilization is over its preemption threshold (0.8f)
+ // for the second time
+ setContainerResourceUtilization(
+ ResourceUtilization.newInstance(2048, 0, fullCpuUtilization));
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
+
+ // all containers should continue to be running because we don't preempt
+ // OPPORTUNISTIC containers when the cpu is over the preemption threshold
+ // (0.8f) the second time
+ verifyContainerStatuses(new HashMap<ContainerId, ContainerSubState>() {
+ {
+ put(createContainerId(0), ContainerSubState.RUNNING);
+ put(createContainerId(1), ContainerSubState.RUNNING);
+ put(createContainerId(2), ContainerSubState.RUNNING);
+ put(createContainerId(3), ContainerSubState.RUNNING);
+ }
+ });
+
+ // the containers CPU utilization is over the preemption threshold (0.8f)
+ // for the third time
+ setContainerResourceUtilization(
+ ResourceUtilization.newInstance(2048, 0, fullCpuUtilization));
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
+
+ // because CPU utilization is over its preemption threshold three times
+ // consecutively, the amount of cpu utilization over the preemption
+ // threshold, that is, 1.0 - 0.8 = 0.2f CPU needs to be reclaimed and
+ // as a result, the most recently launched OPPORTUNISTIC container should
+ // be killed
+ BaseContainerManagerTest.waitForContainerSubState(containerManager,
+ createContainerId(3), ContainerSubState.DONE);
+ verifyContainerStatuses(new HashMap<ContainerId, ContainerSubState>() {
+ {
+ put(createContainerId(0), ContainerSubState.RUNNING);
+ put(createContainerId(1), ContainerSubState.RUNNING);
+ put(createContainerId(2), ContainerSubState.RUNNING);
+ put(createContainerId(3), ContainerSubState.DONE);
+ }
+ });
+
+ // again, the containers CPU utilization is over the preemption threshold
+ // (0.8f) for the first time (the cpu over-limit count is reset every time
+ // a preemption is triggered)
+ setContainerResourceUtilization(
+ ResourceUtilization.newInstance(2048, 0, fullCpuUtilization));
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
+
+ // no CPU resource is expected to be reclaimed when the CPU utilization
+ // goes over the preemption threshold the first time
+ verifyContainerStatuses(new HashMap<ContainerId, ContainerSubState>() {
+ {
+ put(createContainerId(0), ContainerSubState.RUNNING);
+ put(createContainerId(1), ContainerSubState.RUNNING);
+ put(createContainerId(2), ContainerSubState.RUNNING);
+ put(createContainerId(3), ContainerSubState.DONE);
+ }
+ });
+
+ // the containers CPU utilization is over the preemption threshold (0.9f)
+ // for the second time
+ setContainerResourceUtilization(
+ ResourceUtilization.newInstance(2048, 0, fullCpuUtilization));
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
+
+ // still no CPU resource is expected to be reclaimed when the CPU
+ // utilization goes over the preemption threshold the second time
+ verifyContainerStatuses(new HashMap<ContainerId, ContainerSubState>() {
+ {
+ put(createContainerId(0), ContainerSubState.RUNNING);
+ put(createContainerId(1), ContainerSubState.RUNNING);
+ put(createContainerId(2), ContainerSubState.RUNNING);
+ put(createContainerId(3), ContainerSubState.DONE);
+ }
+ });
+
+ // the containers CPU utilization is over the preemption threshold
+ // for the third time
+ setContainerResourceUtilization(
+ ResourceUtilization.newInstance(2048, 0, fullCpuUtilization));
+ ((ContainerManagerForTest) containerManager)
+ .checkNodeResourceUtilization();
+
+ // because CPU utilization is over its preemption threshold three times
+ // consecutively, the amount of cpu utilization over the preemption
+ // threshold, that is, 1.0 - 0.8 = 0.2f CPU needs to be reclaimed and
+ // as a result, the other OPPORTUNISTIC container should be killed
+ BaseContainerManagerTest.waitForContainerSubState(containerManager,
+ createContainerId(1), ContainerSubState.DONE);
+ verifyContainerStatuses(new HashMap<ContainerId, ContainerSubState>() {
+ {
+ put(createContainerId(0), ContainerSubState.RUNNING);
+ put(createContainerId(1), ContainerSubState.DONE);
+ put(createContainerId(2), ContainerSubState.RUNNING);
+ put(createContainerId(3), ContainerSubState.DONE);
+ }
+ });
+ }
+
private void setContainerResourceUtilization(ResourceUtilization usage) {
- ((ContainerMonitorForOverallocationTest)
- containerManager.getContainersMonitor())
- .setContainerResourceUsage(usage);
+ ((ContainerMonitorForTest) containerManager.getContainersMonitor())
+ .setContainerResourceUsage(usage);
}
private void allowContainerToSucceed(int containerId) {
@@ -965,12 +1198,11 @@ public class TestContainerSchedulerWithOverAllocation
}
- protected StartContainerRequest createStartContainerRequest(int containerId,
- Resource resource, boolean isGuaranteed) throws IOException {
+ protected StartContainerRequest createStartContainerRequest(
+ int containerId, Resource resource, ExecutionType executionType)
+ throws IOException {
ContainerLaunchContext containerLaunchContext =
recordFactory.newRecordInstance(ContainerLaunchContext.class);
- ExecutionType executionType = isGuaranteed ? ExecutionType.GUARANTEED :
- ExecutionType.OPPORTUNISTIC;
Token containerToken = createContainerToken(
createContainerId(containerId),
DUMMY_RM_IDENTIFIER, context.getNodeId(), user, resource,
@@ -1004,9 +1236,7 @@ public class TestContainerSchedulerWithOverAllocation
* container processes for testing purposes.
*/
private static class LongRunningContainerSimulatingContainersManager
- extends ContainerManagerImpl {
-
- private final String user;
+ extends ContainerManagerForTest {
LongRunningContainerSimulatingContainersManager(
Context context, ContainerExecutor exec,
@@ -1014,27 +1244,8 @@ public class TestContainerSchedulerWithOverAllocation
NodeStatusUpdater nodeStatusUpdater,
NodeManagerMetrics metrics,
LocalDirsHandlerService dirsHandler, String user) {
- super(context, exec, deletionContext,
- nodeStatusUpdater, metrics, dirsHandler);
- this.user = user;
- }
-
- @Override
- protected UserGroupInformation getRemoteUgi() throws YarnException {
- ApplicationId appId = ApplicationId.newInstance(0, 0);
- ApplicationAttemptId appAttemptId =
- ApplicationAttemptId.newInstance(appId, 1);
- UserGroupInformation ugi =
- UserGroupInformation.createRemoteUser(appAttemptId.toString());
- ugi.addTokenIdentifier(new NMTokenIdentifier(appAttemptId, context
- .getNodeId(), user, context.getNMTokenSecretManager().getCurrentKey()
- .getKeyId()));
- return ugi;
- }
-
- @Override
- protected AsyncDispatcher createDispatcher() {
- return new DrainDispatcher();
+ super(context, exec, deletionContext,
+ nodeStatusUpdater, metrics, dirsHandler, user);
}
/**
@@ -1060,27 +1271,10 @@ public class TestContainerSchedulerWithOverAllocation
throws Exception {
return "123";
}
-
};
}
};
}
-
- @Override
- protected ContainersMonitor createContainersMonitor(
- ContainerExecutor exec) {
- return new ContainerMonitorForOverallocationTest(exec,
- dispatcher, context);
- }
-
- public void startContainersOutOfBandUponLowUtilization() {
- ((ContainerMonitorForOverallocationTest) getContainersMonitor())
- .attemptToStartContainersUponLowUtilization();
- }
-
- public void drainAsyncEvents() {
- ((DrainDispatcher) dispatcher).await();
- }
}
/**
@@ -1176,56 +1370,4 @@ public class TestContainerSchedulerWithOverAllocation
}
}
}
-
- /**
- * A test implementation of container monitor that allows control of
- * current resource utilization.
- */
- private static class ContainerMonitorForOverallocationTest
- extends ContainersMonitorImpl {
-
- private ResourceUtilization containerResourceUsage =
- ResourceUtilization.newInstance(0, 0, 0.0f);
-
- ContainerMonitorForOverallocationTest(ContainerExecutor exec,
- AsyncDispatcher dispatcher, Context context) {
- super(exec, dispatcher, context);
- }
-
- @Override
- public long getPmemAllocatedForContainers() {
- return NM_CONTAINERS_MEMORY_MB * 1024 * 1024L;
- }
-
- @Override
- public long getVmemAllocatedForContainers() {
- float pmemRatio = getConfig().getFloat(
- YarnConfiguration.NM_VMEM_PMEM_RATIO,
- YarnConfiguration.DEFAULT_NM_VMEM_PMEM_RATIO);
- return (long) (pmemRatio * getPmemAllocatedForContainers());
- }
-
- @Override
- public long getVCoresAllocatedForContainers() {
- return NM_CONTAINERS_VCORES;
- }
-
- @Override
- public ContainersResourceUtilization getContainersUtilization(
- boolean latest) {
- return new ContainersMonitor.ContainersResourceUtilization(
- containerResourceUsage, System.currentTimeMillis());
- }
-
- @Override
- protected void checkOverAllocationPrerequisites() {
- // do not check
- }
-
-
- public void setContainerResourceUsage(
- ResourceUtilization containerResourceUsage) {
- this.containerResourceUsage = containerResourceUsage;
- }
- }
}
http://git-wip-us.apache.org/repos/asf/hadoop/blob/124b378f/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/scheduler/TestSnapshotBasedOverAllocationPreemptionPolicy.java
----------------------------------------------------------------------
diff --git a/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/scheduler/TestSnapshotBasedOverAllocationPreemptionPolicy.java b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/scheduler/TestSnapshotBasedOverAllocationPreemptionPolicy.java
new file mode 100644
index 0000000..bbc7c49
--- /dev/null
+++ b/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/scheduler/TestSnapshotBasedOverAllocationPreemptionPolicy.java
@@ -0,0 +1,259 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.yarn.server.nodemanager.containermanager.scheduler;
+
+import org.apache.hadoop.util.Time;
+import org.apache.hadoop.yarn.api.records.ResourceUtilization;
+import org.apache.hadoop.yarn.server.api.records.ResourceThresholds;
+import org.apache.hadoop.yarn.server.nodemanager.containermanager.monitor.ContainersMonitor;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+
+import static org.mockito.Matchers.anyBoolean;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+/**
+ * Unit tests for {@link SnapshotBasedOverAllocationPreemptionPolicy}.
+ */
+public class TestSnapshotBasedOverAllocationPreemptionPolicy {
+ // Both the CPU preemption threshold and the memory preemption threshold
+ // are 75%
+ private final static ResourceThresholds PREEMPTION_THRESHOLDS =
+ ResourceThresholds.newInstance(0.75f, 0.75f);
+
+ // The CPU utilization is allowed to go over the cpu preemption threshold
+ // 2 times in a row before any container is preempted to reclaim cpu resources
+ private final static int MAX_CPU_OVER_PREEMPTION_THRESHOLDS = 2;
+
+ private final ContainersMonitor containersMonitor =
+ mock(ContainersMonitor.class);
+
+ @Before
+ public void setUp() {
+ // the node has an allocation of 2048 MB of memory
+ when(containersMonitor.getPmemAllocatedForContainers()).
+ thenReturn(2048 * 1024 * 1024L);
+ }
+
+ /**
+ * The memory utilization goes above its preemption threshold,
+ * 2048 * 0.75f = 1536 MB (the node has an allocation of 2048 MB memory).
+ */
+ @Test
+ public void testMemoryOverPreemptionThreshold() {
+ SnapshotBasedOverAllocationPreemptionPolicy preemptionPolicy =
+ new SnapshotBasedOverAllocationPreemptionPolicy(PREEMPTION_THRESHOLDS,
+ MAX_CPU_OVER_PREEMPTION_THRESHOLDS, containersMonitor);
+
+ // the current memory utilization, 2000 MB is over the preemption
+ // threshold, 2048 * 0.75, which is 1536 MB. The CPU utilization,
+ // 0.5f is below the preemption threshold, 0.75f.
+ when(containersMonitor.getContainersUtilization(anyBoolean())).thenReturn(
+ new ContainersMonitor.ContainersResourceUtilization(
+ ResourceUtilization.newInstance(2000, 0, 0.5f),
+ Time.now()));
+
+ // the amount of memory utilization over the preemption threshold, that is,
+ // 2000 - (2048 * 0.75) = 464 MB of memory, shall be reclaimed.
+ Assert.assertEquals(
+ ResourceUtilization.newInstance(464, 0, 0f),
+ preemptionPolicy.getResourcesToReclaim());
+ }
+
+ /**
+ * The CPU utilization goes above its preemption threshold, 0.75f.
+ */
+ @Test
+ public void testCpuOverPreemptionThreshold() {
+ SnapshotBasedOverAllocationPreemptionPolicy preemptionPolicy =
+ new SnapshotBasedOverAllocationPreemptionPolicy(PREEMPTION_THRESHOLDS,
+ MAX_CPU_OVER_PREEMPTION_THRESHOLDS, containersMonitor);
+
+ // the current CPU utilization, 1.0f, is over the preemption threshold,
+ // 0.75f, for the first time. The memory utilization, 1000 MB is below
+ // the memory preemption threshold, 2048 * 0.75 = 1536 MB.
+ when(containersMonitor.getContainersUtilization(anyBoolean())).thenReturn(
+ new ContainersMonitor.ContainersResourceUtilization(
+ ResourceUtilization.newInstance(1000, 0, 1.0f),
+ Time.now()));
+ // no resources shall be reclaimed
+ Assert.assertEquals(
+ ResourceUtilization.newInstance(0, 0, 0.0f),
+ preemptionPolicy.getResourcesToReclaim());
+
+ // the current CPU utilization, 0.5f, is below the preemption threshold,
+ // 0.75f. In the meantime the memory utilization, 1000 MB is also below
+ // the memory preemption threshold, 2048 * 0.75 = 1536 MB.
+ when(containersMonitor.getContainersUtilization(anyBoolean())).thenReturn(
+ new ContainersMonitor.ContainersResourceUtilization(
+ ResourceUtilization.newInstance(1000, 0, 0.5f),
+ Time.now()));
+ // no resources shall be reclaimed
+ Assert.assertEquals(
+ ResourceUtilization.newInstance(0, 0, 0.0f),
+ preemptionPolicy.getResourcesToReclaim());
+
+ // the current CPU utilization, 1.0f, is over the preemption threshold,
+ // 0.75f. In the meantime the memory utilization, 1000 MB is below
+ // the memory preemption threshold, 2048 * 0.75 = 1536 MB.
+ when(containersMonitor.getContainersUtilization(anyBoolean())).thenReturn(
+ new ContainersMonitor.ContainersResourceUtilization(
+ ResourceUtilization.newInstance(1000, 0, 1.0f),
+ Time.now()));
+ // no resources shall be reclaimed because the cpu utilization is allowed
+ // to go over the preemption threshold at most two times in a row. It is
+ // just over the preemption threshold for the first time
+ Assert.assertEquals(
+ ResourceUtilization.newInstance(0, 0, 0.0f),
+ preemptionPolicy.getResourcesToReclaim());
+
+ // the current CPU utilization, 1.0f, is again over the preemption
+ // threshold, 0.75f. In the meantime the memory utilization, 1000 MB
+ // is below the memory preemption threshold, 2048 * 0.75 = 1536 MB.
+ when(containersMonitor.getContainersUtilization(anyBoolean())).thenReturn(
+ new ContainersMonitor.ContainersResourceUtilization(
+ ResourceUtilization.newInstance(1000, 0, 1.0f),
+ Time.now()));
+ // no resources shall be reclaimed because the cpu utilization is allowed
+ // to go over the preemption threshold at most two times in a row. It is
+ // just over the preemption threshold for the second time in a row
+ Assert.assertEquals(
+ ResourceUtilization.newInstance(0, 0, 0.0f),
+ preemptionPolicy.getResourcesToReclaim());
+
+ // the current CPU utilization, 1.0f, is over the preemption threshold,
+ // the third time in a row. In the meantime the memory utilization, 1000 MB
+ // is below the memory preemption threshold, 2048 * 0.75 = 1536 MB.
+ when(containersMonitor.getContainersUtilization(anyBoolean())).thenReturn(
+ new ContainersMonitor.ContainersResourceUtilization(
+ ResourceUtilization.newInstance(1000, 0, 1.0f),
+ Time.now()));
+ // the amount of cpu utilization over the preemption threshold, that is,
+ // 1.0 - 0.75f = 0.25, shall be reclaimed.
+ Assert.assertEquals(
+ ResourceUtilization.newInstance(0, 0, 0.25f),
+ preemptionPolicy.getResourcesToReclaim());
+ }
+
+ /**
+ * Both memory and CPU utilization go over their preemption thresholds
+ * respectively.
+ */
+ @Test
+ public void testMemoryCpuOverPreemptionThreshold() {
+ SnapshotBasedOverAllocationPreemptionPolicy preemptionPolicy =
+ new SnapshotBasedOverAllocationPreemptionPolicy(PREEMPTION_THRESHOLDS,
+ MAX_CPU_OVER_PREEMPTION_THRESHOLDS, containersMonitor);
+
+ // the current CPU utilization, 1.0f, is over the preemption threshold,
+ // 0.75f, for the first time. The memory utilization, 1000 MB is below
+ // the memory preemption threshold, 2048 * 0.75 = 1536 MB.
+ when(containersMonitor.getContainersUtilization(anyBoolean())).thenReturn(
+ new ContainersMonitor.ContainersResourceUtilization(
+ ResourceUtilization.newInstance(1000, 0, 1.0f),
+ Time.now()));
+ // no resources shall be reclaimed because the cpu utilization is allowed
+ // to go over the preemption threshold at most two times in a row. It is
+ // just over the preemption threshold for the first time.
+ Assert.assertEquals(
+ ResourceUtilization.newInstance(0, 0, 0.0f),
+ preemptionPolicy.getResourcesToReclaim());
+
+ // the current CPU utilization, 0.5f, is below the preemption threshold,
+ // 0.75f. The memory utilization, 2000 MB, however, is above the memory
+ // preemption threshold, 2048 * 0.75 = 1536 MB.
+ when(containersMonitor.getContainersUtilization(anyBoolean())).thenReturn(
+ new ContainersMonitor.ContainersResourceUtilization(
+ ResourceUtilization.newInstance(2000, 0, 0.5f),
+ Time.now()));
+ // the amount of memory utilization over the preemption threshold, that is,
+ // 2000 - (2048 * 0.75) = 464 MB of memory, shall be reclaimed.
+ Assert.assertEquals(
+ ResourceUtilization.newInstance(464, 0, 0.0f),
+ preemptionPolicy.getResourcesToReclaim());
+
+ // the current CPU utilization, 1.0f, is over the preemption threshold,
+ // 0.75f, for the first time. The memory utilization, 1000 MB is below
+ // the memory preemption threshold, 2048 * 0.75 = 1536 MB.
+ when(containersMonitor.getContainersUtilization(anyBoolean())).thenReturn(
+ new ContainersMonitor.ContainersResourceUtilization(
+ ResourceUtilization.newInstance(1000, 0, 1.0f),
+ Time.now()));
+ // no resources shall be reclaimed because the cpu utilization is allowed
+ // to go over the preemption threshold at most two times in a row. It is
+ // just over the preemption threshold for the first time.
+ Assert.assertEquals(
+ ResourceUtilization.newInstance(0, 0, 0.0f),
+ preemptionPolicy.getResourcesToReclaim());
+
+ // the current CPU utilization, 1.0f, is again over the preemption
+ // threshold, 0.75f. In the meantime the memory utilization, 1000 MB
+ // is still below the memory preemption threshold, 2048 * 0.75 = 1536 MB.
+ when(containersMonitor.getContainersUtilization(anyBoolean())).thenReturn(
+ new ContainersMonitor.ContainersResourceUtilization(
+ ResourceUtilization.newInstance(1000, 0, 1.0f),
+ Time.now()));
+ // no resources shall be reclaimed because the cpu utilization is allowed
+ // to go over the preemption threshold at most two times in a row. It is
+ // just over the preemption threshold for the second time in a row.
+ Assert.assertEquals(
+ ResourceUtilization.newInstance(0, 0, 0.0f),
+ preemptionPolicy.getResourcesToReclaim());
+
+ // the current CPU utilization, 1.0f, is over the CPU preemption threshold,
+ // 0.75f, the third time in a row. In the meantime, the memory utilization,
+ // 2000 MB, is also over the memory preemption threshold,
+ // 2048 * 0.75 = 1536 MB.
+ when(containersMonitor.getContainersUtilization(anyBoolean())).thenReturn(
+ new ContainersMonitor.ContainersResourceUtilization(
+ ResourceUtilization.newInstance(2000, 0, 1.0f),
+ Time.now()));
+ // the amount of memory utilization over the preemption threshold, that is,
+ // 2000 - (2048 * 0.75) = 464 MB of memory, and the amount of cpu
+ // utilization over the preemption threshold, that is, 1.0f - 0.75f = 0.25f,
+ // shall be reclaimed.
+ Assert.assertEquals(
+ ResourceUtilization.newInstance(464, 0, 0.25f),
+ preemptionPolicy.getResourcesToReclaim());
+ }
+
+ /**
+ * Both memory and CPU utilization are under their preemption thresholds.
+ */
+ @Test
+ public void testBothMemoryAndCpuUnderPreemptionThreshold() {
+ SnapshotBasedOverAllocationPreemptionPolicy preemptionPolicy =
+ new SnapshotBasedOverAllocationPreemptionPolicy(PREEMPTION_THRESHOLDS,
+ MAX_CPU_OVER_PREEMPTION_THRESHOLDS, containersMonitor);
+
+ // the current CPU utilization, 0.5f, is below the preemption threshold,
+ // 0.75f. In the meantime the memory utilization, 1000 MB is also below
+ // the memory preemption threshold, 2048 * 0.75 = 1536 MB.
+ when(containersMonitor.getContainersUtilization(anyBoolean())).thenReturn(
+ new ContainersMonitor.ContainersResourceUtilization(
+ ResourceUtilization.newInstance(1000, 0, 0.5f),
+ Time.now()));
+ // no resources shall be reclaimed because both CPU and memory utilization
+ // are under the preemption threshold
+ Assert.assertEquals(
+ ResourceUtilization.newInstance(0, 0, 0f),
+ preemptionPolicy.getResourcesToReclaim());
+ }
+}
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