/
SavepointCoordinatorTest.java
1123 lines (905 loc) · 35.5 KB
/
SavepointCoordinatorTest.java
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/*
* 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.flink.runtime.checkpoint;
import org.apache.commons.io.FileUtils;
import org.apache.flink.api.common.ApplicationID;
import org.apache.flink.api.common.JobID;
import org.apache.flink.runtime.checkpoint.stats.DisabledCheckpointStatsTracker;
import org.apache.flink.runtime.execution.ExecutionState;
import org.apache.flink.runtime.executiongraph.Execution;
import org.apache.flink.runtime.executiongraph.ExecutionAttemptID;
import org.apache.flink.runtime.executiongraph.ExecutionJobVertex;
import org.apache.flink.runtime.executiongraph.ExecutionVertex;
import org.apache.flink.runtime.jobgraph.JobVertexID;
import org.apache.flink.runtime.messages.checkpoint.AcknowledgeCheckpoint;
import org.apache.flink.runtime.messages.checkpoint.NotifyCheckpointComplete;
import org.apache.flink.runtime.messages.checkpoint.TriggerCheckpoint;
import org.apache.flink.runtime.state.LocalStateHandle;
import org.apache.flink.runtime.state.StateHandle;
import org.apache.flink.runtime.testutils.CommonTestUtils;
import org.apache.flink.util.SerializedValue;
import org.junit.Test;
import scala.concurrent.Await;
import scala.concurrent.Future;
import scala.concurrent.Promise;
import scala.concurrent.duration.Deadline;
import scala.concurrent.duration.FiniteDuration;
import java.io.File;
import java.io.IOException;
import java.io.Serializable;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.mockito.Matchers.any;
import static org.mockito.Matchers.anyLong;
import static org.mockito.Matchers.anyString;
import static org.mockito.Matchers.eq;
import static org.mockito.Mockito.doThrow;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
/**
* Tests for the savepoint coordinator.
*/
public class SavepointCoordinatorTest {
// ------------------------------------------------------------------------
// Trigger and acknowledge
// ------------------------------------------------------------------------
/**
* Simple trigger-acknowledge test for a single savepoint.
*/
@Test
public void testSimpleTriggerSavepoint() throws Exception {
ApplicationID appId = new ApplicationID();
JobID jobId = new JobID();
long checkpointTimeout = 60 * 1000;
long timestamp = 1272635;
ExecutionVertex[] vertices = new ExecutionVertex[] {
mockExecutionVertex(jobId),
mockExecutionVertex(jobId) };
MockCheckpointIdCounter checkpointIdCounter = new MockCheckpointIdCounter();
HeapStateStore<Savepoint> savepointStore = new HeapStateStore<>();
SavepointCoordinator coordinator = createSavepointCoordinator(
appId,
jobId,
checkpointTimeout,
vertices,
vertices,
vertices,
checkpointIdCounter,
savepointStore);
// Trigger the savepoint
Future<String> savepointPathFuture = coordinator.triggerSavepoint(timestamp);
assertFalse(savepointPathFuture.isCompleted());
long checkpointId = checkpointIdCounter.getLastReturnedCount();
assertEquals(0, checkpointId);
// Verify send trigger messages
for (ExecutionVertex vertex : vertices) {
verifyTriggerCheckpoint(vertex, checkpointId, timestamp);
}
PendingCheckpoint pendingCheckpoint = coordinator.getPendingCheckpoints()
.get(checkpointId);
verifyPendingCheckpoint(pendingCheckpoint, jobId, checkpointId,
timestamp, 0, 2, 0, false, false);
// Acknowledge tasks
for (ExecutionVertex vertex : vertices) {
coordinator.receiveAcknowledgeMessage(new AcknowledgeCheckpoint(
jobId, vertex.getCurrentExecutionAttempt().getAttemptId(),
checkpointId, createSerializedStateHandle(vertex), 0));
}
// The pending checkpoint is completed
assertTrue(pendingCheckpoint.isDiscarded());
assertEquals(0, coordinator.getSuccessfulCheckpoints().size());
// Verify send notify complete messages
for (ExecutionVertex vertex : vertices) {
verifyNotifyCheckpointComplete(vertex, checkpointId, timestamp);
}
// Verify that the future has been completed
assertTrue(savepointPathFuture.isCompleted());
String savepointPath = Await.result(savepointPathFuture, FiniteDuration.Zero());
// Verify the savepoint
Savepoint savepoint = savepointStore.getState(savepointPath);
verifySavepoint(savepoint, appId, jobId, checkpointId, timestamp,
vertices);
// Verify all promises removed
assertEquals(0, getSavepointPromises(coordinator).size());
coordinator.shutdown();
}
// ------------------------------------------------------------------------
// Rollback
// ------------------------------------------------------------------------
@Test
@SuppressWarnings("unchecked")
public void testSimpleRollbackSavepoint() throws Exception {
ApplicationID appId = new ApplicationID();
JobID jobId = new JobID();
ExecutionJobVertex[] jobVertices = new ExecutionJobVertex[] {
mockExecutionJobVertex(jobId, new JobVertexID(), 4),
mockExecutionJobVertex(jobId, new JobVertexID(), 4) };
ExecutionVertex[] triggerVertices = jobVertices[0].getTaskVertices();
ExecutionVertex[] ackVertices = new ExecutionVertex[8];
int i = 0;
for (ExecutionJobVertex jobVertex : jobVertices) {
for (ExecutionVertex vertex : jobVertex.getTaskVertices()) {
ackVertices[i++] = vertex;
}
}
MockCheckpointIdCounter idCounter = new MockCheckpointIdCounter();
StateStore<Savepoint> savepointStore = new HeapStateStore<>();
SavepointCoordinator coordinator = createSavepointCoordinator(
appId,
jobId,
60 * 1000,
triggerVertices,
ackVertices,
new ExecutionVertex[] {},
idCounter,
savepointStore);
Future<String> savepointPathFuture = coordinator.triggerSavepoint(1231273123);
// Acknowledge all tasks
for (ExecutionVertex vertex : ackVertices) {
ExecutionAttemptID attemptId = vertex.getCurrentExecutionAttempt().getAttemptId();
coordinator.receiveAcknowledgeMessage(new AcknowledgeCheckpoint(
jobId, attemptId, 0, createSerializedStateHandle(vertex), 0));
}
String savepointPath = Await.result(savepointPathFuture, FiniteDuration.Zero());
assertNotNull(savepointPath);
// Rollback
assertEquals(appId, coordinator.restoreSavepoint(
createExecutionJobVertexMap(jobVertices),
savepointPath));
// Verify all executions have been reset
for (ExecutionVertex vertex : ackVertices) {
verify(vertex.getCurrentExecutionAttempt(), times(1)).setInitialState(
any(SerializedValue.class), anyLong());
}
// Verify all promises removed
assertEquals(0, getSavepointPromises(coordinator).size());
// Verify checkpoint ID counter started
assertTrue(idCounter.isStarted());
coordinator.shutdown();
}
@Test
public void testRollbackParallelismMismatch() throws Exception {
ApplicationID appId = new ApplicationID();
JobID jobId = new JobID();
ExecutionJobVertex[] jobVertices = new ExecutionJobVertex[] {
mockExecutionJobVertex(jobId, new JobVertexID(), 4),
mockExecutionJobVertex(jobId, new JobVertexID(), 4) };
ExecutionVertex[] triggerVertices = jobVertices[0].getTaskVertices();
ExecutionVertex[] ackVertices = new ExecutionVertex[8];
int index = 0;
for (ExecutionJobVertex jobVertex : jobVertices) {
for (ExecutionVertex vertex : jobVertex.getTaskVertices()) {
ackVertices[index++] = vertex;
}
}
StateStore<Savepoint> savepointStore = new HeapStateStore<>();
SavepointCoordinator coordinator = createSavepointCoordinator(
appId,
jobId,
60 * 1000,
triggerVertices,
ackVertices,
new ExecutionVertex[] {},
new MockCheckpointIdCounter(),
savepointStore);
Future<String> savepointPathFuture = coordinator.triggerSavepoint(1231273123);
// Acknowledge all tasks
for (ExecutionVertex vertex : ackVertices) {
ExecutionAttemptID attemptId = vertex.getCurrentExecutionAttempt().getAttemptId();
coordinator.receiveAcknowledgeMessage(new AcknowledgeCheckpoint(
jobId, attemptId, 0, createSerializedStateHandle(vertex), 0));
}
String savepointPath = Await.result(savepointPathFuture, FiniteDuration.Zero());
assertNotNull(savepointPath);
// Change parallelism lower than original (state without matching subtask). The
// other way around (subtask without matching state) is OK.
for (int i = 0; i < jobVertices.length; i++) {
jobVertices[i] = mockExecutionJobVertex(jobId, jobVertices[i].getJobVertexId(), 2);
}
try {
// Rollback
coordinator.restoreSavepoint(
createExecutionJobVertexMap(jobVertices),
savepointPath);
fail("Did not throw expected Exception after rollback with parallelism mismatch.");
}
catch (Exception ignored) {
}
// Verify all promises removed
assertEquals(0, getSavepointPromises(coordinator).size());
coordinator.shutdown();
}
@Test
public void testRollbackStateStoreFailure() throws Exception {
ApplicationID appId = new ApplicationID();
JobID jobId = new JobID();
ExecutionJobVertex jobVertex = mockExecutionJobVertex(jobId, new JobVertexID(), 4);
HeapStateStore<Savepoint> savepointStore = spy(
new HeapStateStore<Savepoint>());
SavepointCoordinator coordinator = createSavepointCoordinator(
appId,
jobId,
60 * 1000,
jobVertex.getTaskVertices(),
jobVertex.getTaskVertices(),
new ExecutionVertex[] {},
new MockCheckpointIdCounter(),
savepointStore);
Future<String> savepointPathFuture = coordinator.triggerSavepoint(1231273123);
// Acknowledge all tasks
for (ExecutionVertex vertex : jobVertex.getTaskVertices()) {
ExecutionAttemptID attemptId = vertex.getCurrentExecutionAttempt().getAttemptId();
coordinator.receiveAcknowledgeMessage(new AcknowledgeCheckpoint(
jobId, attemptId, 0, createSerializedStateHandle(vertex), 0));
}
String savepointPath = Await.result(savepointPathFuture, FiniteDuration.Zero());
assertNotNull(savepointPath);
// Failure on getState
doThrow(new Exception("TestException")).when(savepointStore).getState(anyString());
try {
// Rollback
coordinator.restoreSavepoint(
createExecutionJobVertexMap(jobVertex),
savepointPath);
fail("Did not throw expected Exception after rollback with savepoint store failure.");
}
catch (Exception ignored) {
}
// Verify all promises removed
assertEquals(0, getSavepointPromises(coordinator).size());
coordinator.shutdown();
}
@Test
public void testRollbackUpdatesApplicationID() throws Exception {
ApplicationID appId = new ApplicationID();
CompletedCheckpoint checkpoint = mock(CompletedCheckpoint.class);
when(checkpoint.getStates()).thenReturn(Collections.<StateForTask>emptyList());
when(checkpoint.getCheckpointID()).thenReturn(12312312L);
Savepoint savepoint = new Savepoint(appId, checkpoint);
StateStore<Savepoint> savepointStore = mock(StateStore.class);
when(savepointStore.getState(anyString())).thenReturn(savepoint);
SavepointCoordinator coordinator = createSavepointCoordinator(
new ApplicationID(),
new JobID(),
60 * 1000,
new ExecutionVertex[] {},
new ExecutionVertex[] {},
new ExecutionVertex[] {},
new MockCheckpointIdCounter(),
savepointStore);
assertEquals(appId, coordinator.restoreSavepoint(createExecutionJobVertexMap(), "any"));
coordinator.shutdown();
}
@Test
public void testRollbackSetsCheckpointID() throws Exception {
ApplicationID appId = new ApplicationID();
CompletedCheckpoint checkpoint = mock(CompletedCheckpoint.class);
when(checkpoint.getStates()).thenReturn(Collections.<StateForTask>emptyList());
when(checkpoint.getCheckpointID()).thenReturn(12312312L);
Savepoint savepoint = new Savepoint(appId, checkpoint);
CheckpointIDCounter checkpointIdCounter = mock(CheckpointIDCounter.class);
StateStore<Savepoint> savepointStore = mock(StateStore.class);
when(savepointStore.getState(anyString())).thenReturn(savepoint);
SavepointCoordinator coordinator = createSavepointCoordinator(
new ApplicationID(),
new JobID(),
60 * 1000,
new ExecutionVertex[] {},
new ExecutionVertex[] {},
new ExecutionVertex[] {},
checkpointIdCounter,
savepointStore);
assertEquals(appId, coordinator.restoreSavepoint(createExecutionJobVertexMap(), "any"));
verify(checkpointIdCounter).setCount(eq(12312312L + 1));
coordinator.shutdown();
}
// ------------------------------------------------------------------------
// Savepoint aborts and future notifications
// ------------------------------------------------------------------------
@Test
public void testAbortSavepointIfTriggerTasksNotExecuted() throws Exception {
ApplicationID appId = new ApplicationID();
JobID jobId = new JobID();
ExecutionVertex[] triggerVertices = new ExecutionVertex[] {
mock(ExecutionVertex.class),
mock(ExecutionVertex.class) };
ExecutionVertex[] ackVertices = new ExecutionVertex[] {
mockExecutionVertex(jobId),
mockExecutionVertex(jobId) };
SavepointCoordinator coordinator = createSavepointCoordinator(
appId,
jobId,
60 * 1000,
triggerVertices,
ackVertices,
new ExecutionVertex[] {},
new MockCheckpointIdCounter(),
new HeapStateStore<Savepoint>());
// Trigger savepoint
Future<String> savepointPathFuture = coordinator.triggerSavepoint(1238123);
// Abort the savepoint, because the vertices are not running
assertTrue(savepointPathFuture.isCompleted());
try {
Await.result(savepointPathFuture, FiniteDuration.Zero());
fail("Did not throw expected Exception after shutdown");
}
catch (Exception ignored) {
}
// Verify all promises removed
assertEquals(0, getSavepointPromises(coordinator).size());
coordinator.shutdown();
}
@Test
public void testAbortSavepointIfTriggerTasksAreFinished() throws Exception {
ApplicationID appId = new ApplicationID();
JobID jobId = new JobID();
ExecutionVertex[] triggerVertices = new ExecutionVertex[] {
mockExecutionVertex(jobId),
mockExecutionVertex(jobId, ExecutionState.FINISHED) };
ExecutionVertex[] ackVertices = new ExecutionVertex[] {
mockExecutionVertex(jobId),
mockExecutionVertex(jobId) };
SavepointCoordinator coordinator = createSavepointCoordinator(
appId,
jobId,
60 * 1000,
triggerVertices,
ackVertices,
new ExecutionVertex[] {},
new MockCheckpointIdCounter(),
new HeapStateStore<Savepoint>());
// Trigger savepoint
Future<String> savepointPathFuture = coordinator.triggerSavepoint(1238123);
// Abort the savepoint, because the vertices are not running
assertTrue(savepointPathFuture.isCompleted());
try {
Await.result(savepointPathFuture, FiniteDuration.Zero());
fail("Did not throw expected Exception after shutdown");
}
catch (Exception ignored) {
}
// Verify all promises removed
assertEquals(0, getSavepointPromises(coordinator).size());
coordinator.shutdown();
}
@Test
public void testAbortSavepointIfAckTasksAreNotExecuted() throws Exception {
ApplicationID appId = new ApplicationID();
JobID jobId = new JobID();
ExecutionVertex[] triggerVertices = new ExecutionVertex[] {
mockExecutionVertex(jobId),
mockExecutionVertex(jobId) };
ExecutionVertex[] ackVertices = new ExecutionVertex[] {
mock(ExecutionVertex.class),
mock(ExecutionVertex.class) };
SavepointCoordinator coordinator = createSavepointCoordinator(
appId,
jobId,
60 * 1000,
triggerVertices,
ackVertices,
new ExecutionVertex[] {},
new MockCheckpointIdCounter(),
new HeapStateStore<Savepoint>());
// Trigger savepoint
Future<String> savepointPathFuture = coordinator.triggerSavepoint(1238123);
// Abort the savepoint, because the vertices are not running
assertTrue(savepointPathFuture.isCompleted());
try {
Await.result(savepointPathFuture, FiniteDuration.Zero());
fail("Did not throw expected Exception after shutdown");
}
catch (Exception ignored) {
}
// Verify all promises removed
assertEquals(0, getSavepointPromises(coordinator).size());
coordinator.shutdown();
}
@Test
public void testAbortOnCheckpointTimeout() throws Exception {
ApplicationID appId = new ApplicationID();
JobID jobId = new JobID();
ExecutionVertex[] vertices = new ExecutionVertex[] {
mockExecutionVertex(jobId),
mockExecutionVertex(jobId) };
ExecutionVertex commitVertex = mockExecutionVertex(jobId);
MockCheckpointIdCounter checkpointIdCounter = new MockCheckpointIdCounter();
SavepointCoordinator coordinator = createSavepointCoordinator(
appId,
jobId,
20,
vertices,
vertices,
new ExecutionVertex[] { commitVertex },
checkpointIdCounter,
new HeapStateStore<Savepoint>());
// Trigger the savepoint
Future<String> savepointPathFuture = coordinator.triggerSavepoint(12731273);
assertFalse(savepointPathFuture.isCompleted());
long checkpointId = checkpointIdCounter.getLastReturnedCount();
// Acknowledge single task
coordinator.receiveAcknowledgeMessage(new AcknowledgeCheckpoint(
jobId, vertices[0].getCurrentExecutionAttempt().getAttemptId(),
checkpointId, createSerializedStateHandle(vertices[0]), 0));
PendingCheckpoint pendingCheckpoint = coordinator.getPendingCheckpoints()
.get(checkpointId);
assertFalse(pendingCheckpoint.isDiscarded());
// Wait for savepoint to timeout
Deadline deadline = FiniteDuration.apply(5, "s").fromNow();
while (deadline.hasTimeLeft()
&& !pendingCheckpoint.isDiscarded()
&& coordinator.getNumberOfPendingCheckpoints() > 0) {
Thread.sleep(250);
}
// Verify discarded
assertTrue(pendingCheckpoint.isDiscarded());
assertEquals(0, coordinator.getNumberOfPendingCheckpoints());
assertEquals(0, coordinator.getNumberOfRetainedSuccessfulCheckpoints());
// No commit for timeout
verify(commitVertex, times(0)).sendMessageToCurrentExecution(
any(NotifyCheckpointComplete.class), any(ExecutionAttemptID.class));
assertTrue(savepointPathFuture.isCompleted());
try {
Await.result(savepointPathFuture, FiniteDuration.Zero());
fail("Did not throw expected Exception after timeout");
}
catch (Exception ignored) {
}
// Verify all promises removed
assertEquals(0, getSavepointPromises(coordinator).size());
coordinator.shutdown();
}
@Test
public void testAbortSavepointsOnShutdown() throws Exception {
ApplicationID appId = new ApplicationID();
JobID jobId = new JobID();
ExecutionVertex[] vertices = new ExecutionVertex[] {
mockExecutionVertex(jobId),
mockExecutionVertex(jobId) };
SavepointCoordinator coordinator = createSavepointCoordinator(
appId,
jobId,
60 * 1000,
vertices,
vertices,
vertices,
new MockCheckpointIdCounter(),
new HeapStateStore<Savepoint>());
// Trigger savepoints
List<Future<String>> savepointPathFutures = new ArrayList<>();
savepointPathFutures.add(coordinator.triggerSavepoint(12731273));
savepointPathFutures.add(coordinator.triggerSavepoint(12731273 + 123));
for (Future<String> future : savepointPathFutures) {
assertFalse(future.isCompleted());
}
coordinator.shutdown();
// Verify futures failed
for (Future<String> future : savepointPathFutures) {
assertTrue(future.isCompleted());
try {
Await.result(future, FiniteDuration.Zero());
fail("Did not throw expected Exception after shutdown");
}
catch (Exception ignored) {
}
}
// Verify all promises removed
assertEquals(0, getSavepointPromises(coordinator).size());
}
@Test
public void testAbortSavepointOnStateStoreFailure() throws Exception {
ApplicationID appId = new ApplicationID();
JobID jobId = new JobID();
ExecutionJobVertex jobVertex = mockExecutionJobVertex(jobId, new JobVertexID(), 4);
HeapStateStore<Savepoint> savepointStore = spy(
new HeapStateStore<Savepoint>());
SavepointCoordinator coordinator = createSavepointCoordinator(
appId,
jobId,
60 * 1000,
jobVertex.getTaskVertices(),
jobVertex.getTaskVertices(),
new ExecutionVertex[] {},
new MockCheckpointIdCounter(),
savepointStore);
// Failure on putState
doThrow(new Exception("TestException"))
.when(savepointStore).putState(any(Savepoint.class));
Future<String> savepointPathFuture = coordinator.triggerSavepoint(1231273123);
// Acknowledge all tasks
for (ExecutionVertex vertex : jobVertex.getTaskVertices()) {
ExecutionAttemptID attemptId = vertex.getCurrentExecutionAttempt().getAttemptId();
coordinator.receiveAcknowledgeMessage(new AcknowledgeCheckpoint(
jobId, attemptId, 0, createSerializedStateHandle(vertex), 0));
}
try {
Await.result(savepointPathFuture, FiniteDuration.Zero());
fail("Did not throw expected Exception after rollback with savepoint store failure.");
}
catch (Exception ignored) {
}
// Verify all promises removed
assertEquals(0, getSavepointPromises(coordinator).size());
coordinator.shutdown();
}
@Test
public void testAbortSavepointIfSubsumed() throws Exception {
ApplicationID appId = new ApplicationID();
JobID jobId = new JobID();
long checkpointTimeout = 60 * 1000;
long[] timestamps = new long[] { 1272635, 1272635 + 10 };
long[] checkpointIds = new long[2];
ExecutionVertex[] vertices = new ExecutionVertex[] {
mockExecutionVertex(jobId),
mockExecutionVertex(jobId) };
MockCheckpointIdCounter checkpointIdCounter = new MockCheckpointIdCounter();
HeapStateStore<Savepoint> savepointStore = new HeapStateStore<>();
SavepointCoordinator coordinator = createSavepointCoordinator(
appId,
jobId,
checkpointTimeout,
vertices,
vertices,
vertices,
checkpointIdCounter,
savepointStore);
// Trigger the savepoints
List<Future<String>> savepointPathFutures = new ArrayList<>();
savepointPathFutures.add(coordinator.triggerSavepoint(timestamps[0]));
checkpointIds[0] = checkpointIdCounter.getLastReturnedCount();
savepointPathFutures.add(coordinator.triggerSavepoint(timestamps[1]));
checkpointIds[1] = checkpointIdCounter.getLastReturnedCount();
for (Future<String> future : savepointPathFutures) {
assertFalse(future.isCompleted());
}
// Verify send trigger messages
for (ExecutionVertex vertex : vertices) {
verifyTriggerCheckpoint(vertex, checkpointIds[0], timestamps[0]);
verifyTriggerCheckpoint(vertex, checkpointIds[1], timestamps[1]);
}
PendingCheckpoint[] pendingCheckpoints = new PendingCheckpoint[] {
coordinator.getPendingCheckpoints().get(checkpointIds[0]),
coordinator.getPendingCheckpoints().get(checkpointIds[1]) };
verifyPendingCheckpoint(pendingCheckpoints[0], jobId, checkpointIds[0],
timestamps[0], 0, 2, 0, false, false);
verifyPendingCheckpoint(pendingCheckpoints[1], jobId, checkpointIds[1],
timestamps[1], 0, 2, 0, false, false);
// Acknowledge second checkpoint...
for (ExecutionVertex vertex : vertices) {
coordinator.receiveAcknowledgeMessage(new AcknowledgeCheckpoint(
jobId, vertex.getCurrentExecutionAttempt().getAttemptId(),
checkpointIds[1], createSerializedStateHandle(vertex), 0));
}
// ...and one task of first checkpoint
coordinator.receiveAcknowledgeMessage(new AcknowledgeCheckpoint(
jobId, vertices[0].getCurrentExecutionAttempt().getAttemptId(),
checkpointIds[0], createSerializedStateHandle(vertices[0]), 0));
// The second pending checkpoint is completed and subsumes the first one
assertTrue(pendingCheckpoints[0].isDiscarded());
assertTrue(pendingCheckpoints[1].isDiscarded());
assertEquals(0, coordinator.getSuccessfulCheckpoints().size());
// Verify send notify complete messages for second checkpoint
for (ExecutionVertex vertex : vertices) {
verifyNotifyCheckpointComplete(vertex, checkpointIds[1], timestamps[1]);
}
Savepoint[] savepoints = new Savepoint[2];
String[] savepointPaths = new String[2];
// Verify that the futures have both been completed
assertTrue(savepointPathFutures.get(0).isCompleted());
try {
savepointPaths[0] = Await.result(savepointPathFutures.get(0), FiniteDuration.Zero());
fail("Did not throw expected exception");
}
catch (Exception ignored) {
}
// Verify the second savepoint
assertTrue(savepointPathFutures.get(1).isCompleted());
savepointPaths[1] = Await.result(savepointPathFutures.get(1), FiniteDuration.Zero());
savepoints[1] = savepointStore.getState(savepointPaths[1]);
verifySavepoint(savepoints[1], appId, jobId, checkpointIds[1], timestamps[1],
vertices);
// Verify all promises removed
assertEquals(0, getSavepointPromises(coordinator).size());
coordinator.shutdown();
}
@Test
public void testShutdownDoesNotCleanUpCompletedCheckpointsWithFileSystemStore() throws Exception {
ApplicationID appId = new ApplicationID();
JobID jobId = new JobID();
long checkpointTimeout = 60 * 1000;
long timestamp = 1272635;
ExecutionVertex[] vertices = new ExecutionVertex[] {
mockExecutionVertex(jobId),
mockExecutionVertex(jobId) };
MockCheckpointIdCounter checkpointIdCounter = new MockCheckpointIdCounter();
// Temporary directory for file state backend
final File tmpDir = CommonTestUtils.createTempDirectory();
try {
FileSystemStateStore<Savepoint> savepointStore = new FileSystemStateStore<>(
tmpDir.toURI().toString(), "sp-");
SavepointCoordinator coordinator = createSavepointCoordinator(
appId,
jobId,
checkpointTimeout,
vertices,
vertices,
vertices,
checkpointIdCounter,
savepointStore);
// Trigger the savepoint
Future<String> savepointPathFuture = coordinator.triggerSavepoint(timestamp);
assertFalse(savepointPathFuture.isCompleted());
long checkpointId = checkpointIdCounter.getLastReturnedCount();
assertEquals(0, checkpointId);
// Verify send trigger messages
for (ExecutionVertex vertex : vertices) {
verifyTriggerCheckpoint(vertex, checkpointId, timestamp);
}
PendingCheckpoint pendingCheckpoint = coordinator.getPendingCheckpoints()
.get(checkpointId);
verifyPendingCheckpoint(pendingCheckpoint, jobId, checkpointId,
timestamp, 0, 2, 0, false, false);
// Acknowledge tasks
for (ExecutionVertex vertex : vertices) {
coordinator.receiveAcknowledgeMessage(new AcknowledgeCheckpoint(
jobId, vertex.getCurrentExecutionAttempt().getAttemptId(),
checkpointId, createSerializedStateHandle(vertex), 0));
}
// The pending checkpoint is completed
assertTrue(pendingCheckpoint.isDiscarded());
assertEquals(0, coordinator.getSuccessfulCheckpoints().size());
// Verify send notify complete messages
for (ExecutionVertex vertex : vertices) {
verifyNotifyCheckpointComplete(vertex, checkpointId, timestamp);
}
// Verify that the future has been completed
assertTrue(savepointPathFuture.isCompleted());
String savepointPath = Await.result(savepointPathFuture, FiniteDuration.Zero());
// Verify all promises removed
assertEquals(0, getSavepointPromises(coordinator).size());
coordinator.shutdown();
// Verify the savepoint is still available
Savepoint savepoint = savepointStore.getState(savepointPath);
verifySavepoint(savepoint, appId, jobId, checkpointId, timestamp,
vertices);
}
finally {
FileUtils.deleteDirectory(tmpDir);
}
}
// ------------------------------------------------------------------------
// Test helpers
// ------------------------------------------------------------------------
private static SavepointCoordinator createSavepointCoordinator(
ApplicationID appId,
JobID jobId,
long checkpointTimeout,
ExecutionVertex[] triggerVertices,
ExecutionVertex[] ackVertices,
ExecutionVertex[] commitVertices,
CheckpointIDCounter checkpointIdCounter,
StateStore<Savepoint> savepointStore) throws Exception {
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
return new SavepointCoordinator(
appId,
jobId,
checkpointTimeout,
checkpointTimeout,
triggerVertices,
ackVertices,
commitVertices,
classLoader,
checkpointIdCounter,
savepointStore,
new DisabledCheckpointStatsTracker());
}
private static Map<JobVertexID, ExecutionJobVertex> createExecutionJobVertexMap(
ExecutionJobVertex... jobVertices) {
Map<JobVertexID, ExecutionJobVertex> jobVertexMap = new HashMap<>();
for (ExecutionJobVertex jobVertex : jobVertices) {
jobVertexMap.put(jobVertex.getJobVertexId(), jobVertex);
}
return jobVertexMap;
}
private static SerializedValue<StateHandle<?>> createSerializedStateHandle(
ExecutionVertex vertex) throws IOException {
return new SerializedValue<StateHandle<?>>(new LocalStateHandle<Serializable>(
vertex.getCurrentExecutionAttempt().getAttemptId()));
}
@SuppressWarnings("unchecked")
private Map<Long, Promise<String>> getSavepointPromises(
SavepointCoordinator coordinator)
throws NoSuchFieldException, IllegalAccessException {
Field field = SavepointCoordinator.class.getDeclaredField("savepointPromises");
field.setAccessible(true);
return (Map<Long, Promise<String>>) field.get(coordinator);
}
// ---- Verification ------------------------------------------------------
private static void verifyTriggerCheckpoint(
ExecutionVertex mockExecutionVertex,
long expectedCheckpointId,
long expectedTimestamp) {
ExecutionAttemptID attemptId = mockExecutionVertex
.getCurrentExecutionAttempt().getAttemptId();
TriggerCheckpoint expectedMsg = new TriggerCheckpoint(
mockExecutionVertex.getJobId(),
attemptId,
expectedCheckpointId,
expectedTimestamp);
verify(mockExecutionVertex).sendMessageToCurrentExecution(
eq(expectedMsg), eq(attemptId));
}
private static void verifyNotifyCheckpointComplete(
ExecutionVertex mockExecutionVertex,
long expectedCheckpointId,
long expectedTimestamp) {
ExecutionAttemptID attemptId = mockExecutionVertex
.getCurrentExecutionAttempt().getAttemptId();
NotifyCheckpointComplete expectedMsg = new NotifyCheckpointComplete(
mockExecutionVertex.getJobId(),
attemptId,
expectedCheckpointId,
expectedTimestamp);
verify(mockExecutionVertex).sendMessageToCurrentExecution(
eq(expectedMsg), eq(attemptId));
}
private static void verifyPendingCheckpoint(
PendingCheckpoint checkpoint,
JobID expectedJobId,
long expectedCheckpointId,
long expectedTimestamp,
int expectedNumberOfAcknowledgedTasks,
int expectedNumberOfNonAcknowledgedTasks,
int expectedNumberOfCollectedStates,
boolean expectedIsDiscarded,
boolean expectedIsFullyAcknowledged) {
assertNotNull(checkpoint);
assertEquals(expectedJobId, checkpoint.getJobId());
assertEquals(expectedCheckpointId, checkpoint.getCheckpointId());
assertEquals(expectedTimestamp, checkpoint.getCheckpointTimestamp());
assertEquals(expectedNumberOfAcknowledgedTasks, checkpoint.getNumberOfAcknowledgedTasks());
assertEquals(expectedNumberOfNonAcknowledgedTasks, checkpoint.getNumberOfNonAcknowledgedTasks());
assertEquals(expectedNumberOfCollectedStates, checkpoint.getCollectedStates().size());
assertEquals(expectedIsDiscarded, checkpoint.isDiscarded());
assertEquals(expectedIsFullyAcknowledged, checkpoint.isFullyAcknowledged());
}
private static void verifySavepoint(
Savepoint savepoint,
ApplicationID expectedAppId,
JobID expectedJobId,
long expectedCheckpointId,
long expectedTimestamp,
ExecutionVertex[] expectedVertices) throws Exception {
assertEquals(expectedAppId, savepoint.getApplicationId());
verifyCompletedCheckpoint(
savepoint.getCompletedCheckpoint(),
expectedJobId,
expectedCheckpointId,
expectedTimestamp,
expectedVertices
);
}
private static void verifyCompletedCheckpoint(
CompletedCheckpoint checkpoint,