[
https://issues.apache.org/jira/browse/FLINK-9912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16617553#comment-16617553
]
ASF GitHub Bot commented on FLINK-9912:
---------------------------------------
asfgit closed pull request #6394: [FLINK-9912][JM] Release TaskExecutors if
they have no slots registered at SlotPool
URL: https://github.com/apache/flink/pull/6394
This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:
As this is a foreign pull request (from a fork), the diff is supplied
below (as it won't show otherwise due to GitHub magic):
diff --git
a/flink-core/src/main/java/org/apache/flink/types/SerializableOptional.java
b/flink-core/src/main/java/org/apache/flink/types/SerializableOptional.java
new file mode 100644
index 00000000000..4ec75c51a84
--- /dev/null
+++ b/flink-core/src/main/java/org/apache/flink/types/SerializableOptional.java
@@ -0,0 +1,69 @@
+/*
+ * 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.types;
+
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
+import java.io.Serializable;
+import java.util.NoSuchElementException;
+import java.util.Optional;
+import java.util.function.Consumer;
+
+/**
+ * Serializable {@link Optional}.
+ */
+public final class SerializableOptional<T extends Serializable> implements
Serializable {
+ private static final long serialVersionUID = -3312769593551775940L;
+
+ private static final SerializableOptional<?> EMPTY = new
SerializableOptional<>(null);
+
+ @Nullable
+ private final T value;
+
+ private SerializableOptional(@Nullable T value) {
+ this.value = value;
+ }
+
+ public T get() {
+ if (value == null) {
+ throw new NoSuchElementException("No value present");
+ }
+ return value;
+ }
+
+ public boolean isPresent() {
+ return value != null;
+ }
+
+ public void ifPresent(Consumer<? super T> consumer) {
+ if (value != null) {
+ consumer.accept(value);
+ }
+ }
+
+ public static <T extends Serializable> SerializableOptional<T>
of(@Nonnull T value) {
+ return new SerializableOptional<>(value);
+ }
+
+ @SuppressWarnings("unchecked")
+ public static <T extends Serializable> SerializableOptional<T> empty() {
+ return (SerializableOptional<T>) EMPTY;
+ }
+}
diff --git
a/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/JobMaster.java
b/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/JobMaster.java
index 736984e88e7..21e06af30d6 100644
---
a/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/JobMaster.java
+++
b/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/JobMaster.java
@@ -103,6 +103,7 @@
import org.apache.flink.runtime.taskmanager.TaskExecutionState;
import org.apache.flink.runtime.taskmanager.TaskManagerLocation;
import org.apache.flink.runtime.webmonitor.WebMonitorUtils;
+import org.apache.flink.types.SerializableOptional;
import org.apache.flink.util.ExceptionUtils;
import org.apache.flink.util.FlinkException;
import org.apache.flink.util.InstantiationUtil;
@@ -833,13 +834,25 @@ public void failSlot(
final Exception cause) {
if (registeredTaskManagers.containsKey(taskManagerId)) {
- slotPoolGateway.failAllocation(allocationId, cause);
+ internalFailAllocation(allocationId, cause);
} else {
log.warn("Cannot fail slot " + allocationId + " because
the TaskManager " +
taskManagerId + " is unknown.");
}
}
+ private void internalFailAllocation(AllocationID allocationId,
Exception cause) {
+ final CompletableFuture<SerializableOptional<ResourceID>>
emptyTaskExecutorFuture = slotPoolGateway.failAllocation(allocationId, cause);
+
+ emptyTaskExecutorFuture.thenAcceptAsync(
+ resourceIdOptional ->
resourceIdOptional.ifPresent(this::releaseEmptyTaskManager),
+ getMainThreadExecutor());
+ }
+
+ private CompletableFuture<Acknowledge>
releaseEmptyTaskManager(ResourceID resourceId) {
+ return disconnectTaskManager(resourceId, new
FlinkException(String.format("No more slots registered at JobMaster %s.",
resourceId)));
+ }
+
@Override
public CompletableFuture<RegistrationResponse> registerTaskManager(
final String taskManagerRpcAddress,
@@ -982,7 +995,7 @@ private void startCheckpointScheduler(final
CheckpointCoordinator checkpointCoor
@Override
public void notifyAllocationFailure(AllocationID allocationID,
Exception cause) {
- slotPoolGateway.failAllocation(allocationID, cause);
+ internalFailAllocation(allocationID, cause);
}
//----------------------------------------------------------------------------------------------
diff --git
a/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/SlotPool.java
b/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/SlotPool.java
index 13f0462455c..b53ee93e643 100644
---
a/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/SlotPool.java
+++
b/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/SlotPool.java
@@ -50,6 +50,7 @@
import org.apache.flink.runtime.taskmanager.TaskManagerLocation;
import org.apache.flink.runtime.util.clock.Clock;
import org.apache.flink.runtime.util.clock.SystemClock;
+import org.apache.flink.types.SerializableOptional;
import org.apache.flink.util.AbstractID;
import org.apache.flink.util.FlinkException;
import org.apache.flink.util.Preconditions;
@@ -1001,32 +1002,50 @@ private PendingRequest pollMatchingPendingRequest(final
AllocatedSlot slot) {
* and decided to take it back.
*
* @param allocationID Represents the allocation which should be failed
- * @param cause The cause of the failure
+ * @param cause The cause of the failure
+ * @return Optional task executor if it has no more slots registered
*/
@Override
- public void failAllocation(final AllocationID allocationID, final
Exception cause) {
+ public CompletableFuture<SerializableOptional<ResourceID>>
failAllocation(final AllocationID allocationID, final Exception cause) {
final PendingRequest pendingRequest =
pendingRequests.removeKeyB(allocationID);
if (pendingRequest != null) {
// request was still pending
failPendingRequest(pendingRequest, cause);
- }
- else if (availableSlots.tryRemove(allocationID)) {
- log.debug("Failed available slot [{}].", allocationID,
cause);
+ return
CompletableFuture.completedFuture(SerializableOptional.empty());
}
else {
- AllocatedSlot allocatedSlot =
allocatedSlots.remove(allocationID);
- if (allocatedSlot != null) {
- // release the slot.
- // since it is not in 'allocatedSlots' any
more, it will be dropped o return'
- allocatedSlot.releasePayload(cause);
- }
- else {
- log.trace("Outdated request to fail slot
[{}].", allocationID, cause);
- }
+ return tryFailingAllocatedSlot(allocationID, cause);
}
+
// TODO: add some unit tests when the previous two are ready,
the allocation may failed at any phase
}
+ private CompletableFuture<SerializableOptional<ResourceID>>
tryFailingAllocatedSlot(AllocationID allocationID, Exception cause) {
+ AllocatedSlot allocatedSlot =
availableSlots.tryRemove(allocationID);
+
+ if (allocatedSlot == null) {
+ allocatedSlot = allocatedSlots.remove(allocationID);
+ }
+
+ if (allocatedSlot != null) {
+ log.debug("Failed allocated slot [{}]: {}",
allocationID, cause.getMessage());
+
+ // notify TaskExecutor about the failure
+
allocatedSlot.getTaskManagerGateway().freeSlot(allocationID, cause, rpcTimeout);
+ // release the slot.
+ // since it is not in 'allocatedSlots' any more, it
will be dropped o return'
+ allocatedSlot.releasePayload(cause);
+
+ final ResourceID taskManagerId =
allocatedSlot.getTaskManagerId();
+
+ if (!availableSlots.containsTaskManager(taskManagerId)
&& !allocatedSlots.containResource(taskManagerId)) {
+ return
CompletableFuture.completedFuture(SerializableOptional.of(taskManagerId));
+ }
+ }
+
+ return
CompletableFuture.completedFuture(SerializableOptional.empty());
+ }
+
//
------------------------------------------------------------------------
// Resource
//
------------------------------------------------------------------------
@@ -1107,7 +1126,7 @@ private void checkIdleSlot() {
for (AllocatedSlot expiredSlot : expiredSlots) {
final AllocationID allocationID =
expiredSlot.getAllocationId();
- if (availableSlots.tryRemove(allocationID)) {
+ if (availableSlots.tryRemove(allocationID) != null) {
log.info("Releasing idle slot [{}].",
allocationID);
final CompletableFuture<Acknowledge>
freeSlotFuture = expiredSlot.getTaskManagerGateway().freeSlot(
@@ -1502,7 +1521,7 @@ SlotAndLocality poll(SchedulingStrategy
schedulingStrategy, SlotProfile slotProf
}
}
- boolean tryRemove(AllocationID slotId) {
+ AllocatedSlot tryRemove(AllocationID slotId) {
final SlotAndTimestamp sat =
availableSlots.remove(slotId);
if (sat != null) {
final AllocatedSlot slot = sat.slot();
@@ -1522,15 +1541,15 @@ boolean tryRemove(AllocationID slotId) {
availableSlotsByHost.remove(host);
}
- return true;
+ return slot;
}
else {
- return false;
+ return null;
}
}
private void remove(AllocationID slotId) throws
IllegalStateException {
- if (!tryRemove(slotId)) {
+ if (tryRemove(slotId) == null) {
throw new IllegalStateException("slot not
contained");
}
}
diff --git
a/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/SlotPoolGateway.java
b/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/SlotPoolGateway.java
index 34d9c7ff601..3e546ff3674 100644
---
a/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/SlotPoolGateway.java
+++
b/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/SlotPoolGateway.java
@@ -34,6 +34,7 @@
import org.apache.flink.runtime.rpc.RpcTimeout;
import org.apache.flink.runtime.taskexecutor.slot.SlotOffer;
import org.apache.flink.runtime.taskmanager.TaskManagerLocation;
+import org.apache.flink.types.SerializableOptional;
import java.util.Collection;
import java.util.concurrent.CompletableFuture;
@@ -126,8 +127,9 @@
*
* @param allocationID identifying the slot which is being failed
* @param cause of the failure
+ * @return An optional task executor id if this task executor has no
more slots registered
*/
- void failAllocation(AllocationID allocationID, Exception cause);
+ CompletableFuture<SerializableOptional<ResourceID>>
failAllocation(AllocationID allocationID, Exception cause);
//
------------------------------------------------------------------------
// allocating and disposing slots
diff --git
a/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/SlotSharingManager.java
b/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/SlotSharingManager.java
index afcd24f1064..ef288a26469 100644
---
a/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/SlotSharingManager.java
+++
b/flink-runtime/src/main/java/org/apache/flink/runtime/jobmaster/slotpool/SlotSharingManager.java
@@ -36,7 +36,6 @@
import org.slf4j.LoggerFactory;
import javax.annotation.Nullable;
-import javax.annotation.concurrent.GuardedBy;
import java.util.AbstractCollection;
import java.util.Collection;
@@ -82,9 +81,6 @@
private static final Logger LOG =
LoggerFactory.getLogger(SlotSharingManager.class);
- /** Lock for the internal data structures. */
- private final Object lock = new Object();
-
private final SlotSharingGroupId slotSharingGroupId;
/** Actions to release allocated slots after a complete multi task slot
hierarchy has been released. */
@@ -96,11 +92,9 @@
private final Map<SlotRequestId, TaskSlot> allTaskSlots;
/** Root nodes which have not been completed because the allocated slot
is still pending. */
- @GuardedBy("lock")
private final Map<SlotRequestId, MultiTaskSlot> unresolvedRootSlots;
/** Root nodes which have been completed (the underlying allocated slot
has been assigned). */
- @GuardedBy("lock")
private final Map<TaskManagerLocation, Set<MultiTaskSlot>>
resolvedRootSlots;
SlotSharingManager(
@@ -152,27 +146,23 @@ MultiTaskSlot createRootSlot(
allTaskSlots.put(slotRequestId, rootMultiTaskSlot);
- synchronized (lock) {
- unresolvedRootSlots.put(slotRequestId,
rootMultiTaskSlot);
- }
+ unresolvedRootSlots.put(slotRequestId, rootMultiTaskSlot);
// add the root node to the set of resolved root nodes once the
SlotContext future has
// been completed and we know the slot's TaskManagerLocation
slotContextFuture.whenComplete(
(SlotContext slotContext, Throwable throwable) -> {
if (slotContext != null) {
- synchronized (lock) {
- final MultiTaskSlot
resolvedRootNode = unresolvedRootSlots.remove(slotRequestId);
+ final MultiTaskSlot resolvedRootNode =
unresolvedRootSlots.remove(slotRequestId);
- if (resolvedRootNode != null) {
- LOG.trace("Fulfill
multi task slot [{}] with slot [{}].", slotRequestId,
slotContext.getAllocationId());
+ if (resolvedRootNode != null) {
+ LOG.trace("Fulfill multi task
slot [{}] with slot [{}].", slotRequestId, slotContext.getAllocationId());
- final
Set<MultiTaskSlot> innerCollection = resolvedRootSlots.computeIfAbsent(
-
slotContext.getTaskManagerLocation(),
-
taskManagerLocation -> new HashSet<>(4));
+ final Set<MultiTaskSlot>
innerCollection = resolvedRootSlots.computeIfAbsent(
+
slotContext.getTaskManagerLocation(),
+ taskManagerLocation ->
new HashSet<>(4));
-
innerCollection.add(resolvedRootNode);
- }
+
innerCollection.add(resolvedRootNode);
}
} else {
rootMultiTaskSlot.release(throwable);
@@ -193,15 +183,13 @@ MultiTaskSlot createRootSlot(
*/
@Nullable
MultiTaskSlotLocality getResolvedRootSlot(AbstractID groupId,
SchedulingStrategy matcher, SlotProfile slotProfile) {
- synchronized (lock) {
- Collection<Set<MultiTaskSlot>> resolvedRootSlotsValues
= this.resolvedRootSlots.values();
- return matcher.findMatchWithLocality(
- slotProfile,
-
resolvedRootSlotsValues.stream().flatMap(Collection::stream),
- (MultiTaskSlot multiTaskSlot) ->
multiTaskSlot.getSlotContextFuture().join(),
- (MultiTaskSlot multiTaskSlot) ->
!multiTaskSlot.contains(groupId),
- MultiTaskSlotLocality::of);
- }
+ Collection<Set<MultiTaskSlot>> resolvedRootSlotsValues =
this.resolvedRootSlots.values();
+ return matcher.findMatchWithLocality(
+ slotProfile,
+
resolvedRootSlotsValues.stream().flatMap(Collection::stream),
+ (MultiTaskSlot multiTaskSlot) ->
multiTaskSlot.getSlotContextFuture().join(),
+ (MultiTaskSlot multiTaskSlot) ->
!multiTaskSlot.contains(groupId),
+ MultiTaskSlotLocality::of);
}
/**
@@ -213,11 +201,9 @@ MultiTaskSlotLocality getResolvedRootSlot(AbstractID
groupId, SchedulingStrategy
*/
@Nullable
MultiTaskSlot getUnresolvedRootSlot(AbstractID groupId) {
- synchronized (lock) {
- for (MultiTaskSlot multiTaskSlot :
unresolvedRootSlots.values()) {
- if (!multiTaskSlot.contains(groupId)) {
- return multiTaskSlot;
- }
+ for (MultiTaskSlot multiTaskSlot :
unresolvedRootSlots.values()) {
+ if (!multiTaskSlot.contains(groupId)) {
+ return multiTaskSlot;
}
}
@@ -228,11 +214,9 @@ MultiTaskSlot getUnresolvedRootSlot(AbstractID groupId) {
public String toString() {
final StringBuilder builder = new
StringBuilder("{\n\tgroupId=").append(slotSharingGroupId).append('\n');
- synchronized (lock) {
-
builder.append("\tunresolved=").append(unresolvedRootSlots).append('\n');
-
builder.append("\tresolved=").append(resolvedRootSlots).append('\n');
-
builder.append("\tall=").append(allTaskSlots).append('\n');
- }
+
builder.append("\tunresolved=").append(unresolvedRootSlots).append('\n');
+
builder.append("\tresolved=").append(resolvedRootSlots).append('\n');
+ builder.append("\tall=").append(allTaskSlots).append('\n');
return builder.append('}').toString();
}
@@ -479,26 +463,20 @@ public void release(Throwable cause) {
parent.releaseChild(getGroupId());
} else if (allTaskSlots.remove(getSlotRequestId()) !=
null) {
// we are the root node --> remove the root
node from the list of task slots
+ final MultiTaskSlot unresolvedRootSlot =
unresolvedRootSlots.remove(getSlotRequestId());
- if (!slotContextFuture.isDone() ||
slotContextFuture.isCompletedExceptionally()) {
- synchronized (lock) {
- // the root node should still
be unresolved
-
unresolvedRootSlots.remove(getSlotRequestId());
- }
- } else {
+ if (unresolvedRootSlot == null) {
// the root node should be resolved -->
we can access the slot context
final SlotContext slotContext =
slotContextFuture.getNow(null);
if (slotContext != null) {
- synchronized (lock) {
- final
Set<MultiTaskSlot> multiTaskSlots =
resolvedRootSlots.get(slotContext.getTaskManagerLocation());
+ final Set<MultiTaskSlot>
multiTaskSlots = resolvedRootSlots.get(slotContext.getTaskManagerLocation());
- if (multiTaskSlots !=
null) {
-
multiTaskSlots.remove(this);
+ if (multiTaskSlots != null) {
+
multiTaskSlots.remove(this);
- if
(multiTaskSlots.isEmpty()) {
-
resolvedRootSlots.remove(slotContext.getTaskManagerLocation());
- }
+ if
(multiTaskSlots.isEmpty()) {
+
resolvedRootSlots.remove(slotContext.getTaskManagerLocation());
}
}
}
@@ -637,9 +615,7 @@ public String toString() {
@VisibleForTesting
Collection<MultiTaskSlot> getUnresolvedRootSlots() {
- synchronized (lock) {
- return unresolvedRootSlots.values();
- }
+ return unresolvedRootSlots.values();
}
/**
@@ -649,19 +625,15 @@ public String toString() {
@Override
public Iterator<MultiTaskSlot> iterator() {
- synchronized (lock) {
- return new
ResolvedRootSlotIterator(resolvedRootSlots.values().iterator());
- }
+ return new
ResolvedRootSlotIterator(resolvedRootSlots.values().iterator());
}
@Override
public int size() {
int numberResolvedMultiTaskSlots = 0;
- synchronized (lock) {
- for (Set<MultiTaskSlot> multiTaskSlots :
resolvedRootSlots.values()) {
- numberResolvedMultiTaskSlots +=
multiTaskSlots.size();
- }
+ for (Set<MultiTaskSlot> multiTaskSlots :
resolvedRootSlots.values()) {
+ numberResolvedMultiTaskSlots +=
multiTaskSlots.size();
}
return numberResolvedMultiTaskSlots;
diff --git
a/flink-runtime/src/test/java/org/apache/flink/runtime/executiongraph/utils/SimpleAckingTaskManagerGateway.java
b/flink-runtime/src/test/java/org/apache/flink/runtime/executiongraph/utils/SimpleAckingTaskManagerGateway.java
index 5c62a737096..e53b48021ee 100644
---
a/flink-runtime/src/test/java/org/apache/flink/runtime/executiongraph/utils/SimpleAckingTaskManagerGateway.java
+++
b/flink-runtime/src/test/java/org/apache/flink/runtime/executiongraph/utils/SimpleAckingTaskManagerGateway.java
@@ -34,9 +34,12 @@
import org.apache.flink.runtime.messages.StackTrace;
import org.apache.flink.runtime.messages.StackTraceSampleResponse;
+import javax.annotation.Nonnull;
+
import java.util.Optional;
import java.util.UUID;
import java.util.concurrent.CompletableFuture;
+import java.util.function.BiConsumer;
import java.util.function.BiFunction;
import java.util.function.Consumer;
@@ -54,6 +57,9 @@
private volatile BiFunction<AllocationID, Throwable,
CompletableFuture<Acknowledge>> freeSlotFunction;
+ @Nonnull
+ private volatile BiConsumer<InstanceID, Exception>
disconnectFromJobManagerConsumer = (ignoredA, ignoredB) -> {};
+
public SimpleAckingTaskManagerGateway() {
optSubmitConsumer = Optional.empty();
optCancelConsumer = Optional.empty();
@@ -71,13 +77,19 @@ public void setFreeSlotFunction(BiFunction<AllocationID,
Throwable, CompletableF
this.freeSlotFunction = freeSlotFunction;
}
+ public void setDisconnectFromJobManagerConsumer(@Nonnull
BiConsumer<InstanceID, Exception> disconnectFromJobManagerConsumer) {
+ this.disconnectFromJobManagerConsumer =
disconnectFromJobManagerConsumer;
+ }
+
@Override
public String getAddress() {
return address;
}
@Override
- public void disconnectFromJobManager(InstanceID instanceId, Exception
cause) {}
+ public void disconnectFromJobManager(InstanceID instanceId, Exception
cause) {
+ disconnectFromJobManagerConsumer.accept(instanceId, cause);
+ }
@Override
public void stopCluster(ApplicationStatus applicationStatus, String
message) {}
diff --git
a/flink-runtime/src/test/java/org/apache/flink/runtime/jobmaster/JobMasterTest.java
b/flink-runtime/src/test/java/org/apache/flink/runtime/jobmaster/JobMasterTest.java
index 9a2bc97b62b..462b1d16da9 100644
---
a/flink-runtime/src/test/java/org/apache/flink/runtime/jobmaster/JobMasterTest.java
+++
b/flink-runtime/src/test/java/org/apache/flink/runtime/jobmaster/JobMasterTest.java
@@ -550,20 +550,6 @@ public void testSlotRequestTimeoutWhenNoSlotOffering()
throws Exception {
}
}
- private JobGraph createSingleVertexJobWithRestartStrategy() throws
IOException {
- final JobVertex jobVertex = new JobVertex("Test vertex");
- jobVertex.setInvokableClass(NoOpInvokable.class);
-
- final ExecutionConfig executionConfig = new ExecutionConfig();
-
executionConfig.setRestartStrategy(RestartStrategies.fixedDelayRestart(Integer.MAX_VALUE,
0L));
-
- final JobGraph jobGraph = new JobGraph(jobVertex);
- jobGraph.setAllowQueuedScheduling(true);
- jobGraph.setExecutionConfig(executionConfig);
-
- return jobGraph;
- }
-
/**
* Tests that we can close an unestablished ResourceManager connection.
*/
@@ -975,6 +961,72 @@ public void testTriggerSavepointTimeout() throws Exception
{
}
}
+ /**
+ * Tests that the TaskExecutor is released if all of its slots have
been freed.
+ */
+ @Test
+ public void testReleasingTaskExecutorIfNoMoreSlotsRegistered() throws
Exception {
+ final JobManagerSharedServices jobManagerSharedServices = new
TestingJobManagerSharedServicesBuilder().build();
+
+ final JobGraph jobGraph =
createSingleVertexJobWithRestartStrategy();
+
+ final JobMaster jobMaster = createJobMaster(
+ configuration,
+ jobGraph,
+ haServices,
+ jobManagerSharedServices,
+ heartbeatServices);
+
+ final TestingResourceManagerGateway
testingResourceManagerGateway = new TestingResourceManagerGateway();
+
rpcService.registerGateway(testingResourceManagerGateway.getAddress(),
testingResourceManagerGateway);
+
rmLeaderRetrievalService.notifyListener(testingResourceManagerGateway.getAddress(),
testingResourceManagerGateway.getFencingToken().toUUID());
+
+ final CompletableFuture<AllocationID> allocationIdFuture = new
CompletableFuture<>();
+
+ testingResourceManagerGateway.setRequestSlotConsumer(
+ slotRequest ->
allocationIdFuture.complete(slotRequest.getAllocationId()));
+
+ final CompletableFuture<JobID> disconnectTaskExecutorFuture =
new CompletableFuture<>();
+ final CompletableFuture<AllocationID> freedSlotFuture = new
CompletableFuture<>();
+ final TestingTaskExecutorGateway testingTaskExecutorGateway =
new TestingTaskExecutorGatewayBuilder()
+ .setFreeSlotFunction(
+ (allocationID, throwable) -> {
+ freedSlotFuture.complete(allocationID);
+ return
CompletableFuture.completedFuture(Acknowledge.get());
+ })
+ .setDisconnectJobManagerConsumer((jobID, throwable) ->
disconnectTaskExecutorFuture.complete(jobID))
+ .createTestingTaskExecutorGateway();
+ final TaskManagerLocation taskManagerLocation = new
LocalTaskManagerLocation();
+
rpcService.registerGateway(testingTaskExecutorGateway.getAddress(),
testingTaskExecutorGateway);
+
+ try {
+ jobMaster.start(jobMasterId, testingTimeout).get();
+
+ final JobMasterGateway jobMasterGateway =
jobMaster.getSelfGateway(JobMasterGateway.class);
+
+ final AllocationID allocationId =
allocationIdFuture.get();
+
+
jobMasterGateway.registerTaskManager(testingTaskExecutorGateway.getAddress(),
taskManagerLocation, testingTimeout).get();
+
+ final SlotOffer slotOffer = new SlotOffer(allocationId,
0, ResourceProfile.UNKNOWN);
+ final CompletableFuture<Collection<SlotOffer>>
acceptedSlotOffers =
jobMasterGateway.offerSlots(taskManagerLocation.getResourceID(),
Collections.singleton(slotOffer), testingTimeout);
+
+ final Collection<SlotOffer> slotOffers =
acceptedSlotOffers.get();
+
+ // check that we accepted the offered slot
+ assertThat(slotOffers, hasSize(1));
+
+ // now fail the allocation and check that we close the
connection to the TaskExecutor
+ jobMasterGateway.notifyAllocationFailure(allocationId,
new FlinkException("Fail alloction test exception"));
+
+ // we should free the slot and then disconnect from the
TaskExecutor because we use no longer slots from it
+ assertThat(freedSlotFuture.get(),
equalTo(allocationId));
+ assertThat(disconnectTaskExecutorFuture.get(),
equalTo(jobGraph.getJobID()));
+ } finally {
+ RpcUtils.terminateRpcEndpoint(jobMaster,
testingTimeout);
+ }
+ }
+
private JobGraph producerConsumerJobGraph() {
final JobVertex producer = new JobVertex("Producer");
producer.setInvokableClass(NoOpInvokable.class);
@@ -1064,6 +1116,20 @@ private JobMaster createJobMaster(
JobMasterTest.class.getClassLoader());
}
+ private JobGraph createSingleVertexJobWithRestartStrategy() throws
IOException {
+ final JobVertex jobVertex = new JobVertex("Test vertex");
+ jobVertex.setInvokableClass(NoOpInvokable.class);
+
+ final ExecutionConfig executionConfig = new ExecutionConfig();
+
executionConfig.setRestartStrategy(RestartStrategies.fixedDelayRestart(Integer.MAX_VALUE,
0L));
+
+ final JobGraph jobGraph = new JobGraph(jobVertex);
+ jobGraph.setAllowQueuedScheduling(true);
+ jobGraph.setExecutionConfig(executionConfig);
+
+ return jobGraph;
+ }
+
/**
* No op implementation of {@link OnCompletionActions}.
*/
diff --git
a/flink-runtime/src/test/java/org/apache/flink/runtime/jobmaster/slotpool/SlotPoolTest.java
b/flink-runtime/src/test/java/org/apache/flink/runtime/jobmaster/slotpool/SlotPoolTest.java
index 9815cb289da..3a9925c4f20 100644
---
a/flink-runtime/src/test/java/org/apache/flink/runtime/jobmaster/slotpool/SlotPoolTest.java
+++
b/flink-runtime/src/test/java/org/apache/flink/runtime/jobmaster/slotpool/SlotPoolTest.java
@@ -21,6 +21,7 @@
import org.apache.flink.api.common.JobID;
import org.apache.flink.api.common.time.Time;
import org.apache.flink.runtime.clusterframework.types.AllocationID;
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
import org.apache.flink.runtime.clusterframework.types.ResourceProfile;
import org.apache.flink.runtime.clusterframework.types.SlotProfile;
import org.apache.flink.runtime.concurrent.FutureUtils;
@@ -44,6 +45,7 @@
import org.apache.flink.runtime.taskmanager.TaskManagerLocation;
import org.apache.flink.runtime.testingUtils.TestingUtils;
import org.apache.flink.runtime.util.clock.ManualClock;
+import org.apache.flink.types.SerializableOptional;
import org.apache.flink.util.ExceptionUtils;
import org.apache.flink.util.FlinkException;
import org.apache.flink.util.TestLogger;
@@ -59,7 +61,9 @@
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
+import java.util.HashMap;
import java.util.List;
+import java.util.Map;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.CompletableFuture;
@@ -69,6 +73,8 @@
import static
org.apache.flink.runtime.jobmaster.slotpool.AvailableSlotsTest.DEFAULT_TESTING_PROFILE;
import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotEquals;
@@ -692,12 +698,7 @@ public void testReleasingIdleSlotFailed() throws Exception
{
slotPool.triggerCheckIdleSlot();
- CompletableFuture<LogicalSlot> allocatedSlotFuture =
slotPoolGateway.allocateSlot(
- new SlotRequestId(),
- new DummyScheduledUnit(),
- SlotProfile.noRequirements(),
- true,
- timeout);
+ CompletableFuture<LogicalSlot> allocatedSlotFuture =
allocateSlot(slotPoolGateway, new SlotRequestId());
// wait until the slot has been fulfilled with the
previously idling slot
final LogicalSlot logicalSlot =
allocatedSlotFuture.get();
@@ -712,12 +713,7 @@ public void testReleasingIdleSlotFailed() throws Exception
{
slotPool.triggerCheckIdleSlot();
// request a new slot after the idling slot has been
released
- allocatedSlotFuture = slotPoolGateway.allocateSlot(
- new SlotRequestId(),
- new DummyScheduledUnit(),
- SlotProfile.noRequirements(),
- true,
- timeout);
+ allocatedSlotFuture = allocateSlot(slotPoolGateway, new
SlotRequestId());
// release the TaskExecutor before we get a response
from the slot releasing
slotPoolGateway.releaseTaskManager(taskManagerLocation.getResourceID(),
null).get();
@@ -739,6 +735,114 @@ public void testReleasingIdleSlotFailed() throws
Exception {
}
}
+ /**
+ * Tests that failed slots are freed on the {@link TaskExecutor}.
+ */
+ @Test
+ public void testFreeFailedSlots() throws Exception {
+ final SlotPool slotPool = new SlotPool(rpcService, jobId,
LocationPreferenceSchedulingStrategy.getInstance());
+
+ try {
+ final int parallelism = 5;
+ final ArrayBlockingQueue<AllocationID> allocationIds =
new ArrayBlockingQueue<>(parallelism);
+ resourceManagerGateway.setRequestSlotConsumer(
+ slotRequest ->
allocationIds.offer(slotRequest.getAllocationId()));
+
+ final SlotPoolGateway slotPoolGateway =
setupSlotPool(slotPool, resourceManagerGateway);
+
+ final Map<SlotRequestId,
CompletableFuture<LogicalSlot>> slotRequestFutures = new HashMap<>(parallelism);
+
+ for (int i = 0; i < parallelism; i++) {
+ final SlotRequestId slotRequestId = new
SlotRequestId();
+ slotRequestFutures.put(slotRequestId,
allocateSlot(slotPoolGateway, slotRequestId));
+ }
+
+ final List<SlotOffer> slotOffers = new
ArrayList<>(parallelism);
+
+ for (int i = 0; i < parallelism; i++) {
+ slotOffers.add(new
SlotOffer(allocationIds.take(), i, ResourceProfile.UNKNOWN));
+ }
+
+
slotPoolGateway.registerTaskManager(taskManagerLocation.getResourceID());
+ slotPoolGateway.offerSlots(taskManagerLocation,
taskManagerGateway, slotOffers);
+
+ // wait for the completion of both slot futures
+
FutureUtils.waitForAll(slotRequestFutures.values()).get();
+
+ final ArrayBlockingQueue<AllocationID> freedSlots = new
ArrayBlockingQueue<>(1);
+ taskManagerGateway.setFreeSlotFunction(
+ (allocationID, throwable) -> {
+ freedSlots.offer(allocationID);
+ return
CompletableFuture.completedFuture(Acknowledge.get());
+ });
+
+ final FlinkException failException = new
FlinkException("Test fail exception");
+ // fail allocations one by one
+ for (int i = 0; i < parallelism - 1; i++) {
+ final SlotOffer slotOffer = slotOffers.get(i);
+ final
CompletableFuture<SerializableOptional<ResourceID>> emptyTaskExecutorFuture =
slotPoolGateway.failAllocation(
+ slotOffer.getAllocationId(),
+ failException);
+
+
assertThat(emptyTaskExecutorFuture.get().isPresent(), is(false));
+ assertThat(freedSlots.take(),
is(equalTo(slotOffer.getAllocationId())));
+ }
+
+ final SlotOffer slotOffer = slotOffers.get(parallelism
- 1);
+ final
CompletableFuture<SerializableOptional<ResourceID>> emptyTaskExecutorFuture =
slotPoolGateway.failAllocation(
+ slotOffer.getAllocationId(),
+ failException);
+ assertThat(emptyTaskExecutorFuture.get().get(),
is(equalTo(taskManagerLocation.getResourceID())));
+ assertThat(freedSlots.take(),
is(equalTo(slotOffer.getAllocationId())));
+
+ } finally {
+ RpcUtils.terminateRpcEndpoint(slotPool, timeout);
+ }
+ }
+
+ /**
+ * Tests that failing an allocation fails the pending slot request
+ */
+ @Test
+ public void testFailingAllocationFailsPendingSlotRequests() throws
Exception {
+ final SlotPool slotPool = new SlotPool(rpcService, jobId,
LocationPreferenceSchedulingStrategy.getInstance());
+
+ try {
+ final CompletableFuture<AllocationID>
allocationIdFuture = new CompletableFuture<>();
+
resourceManagerGateway.setRequestSlotConsumer(slotRequest ->
allocationIdFuture.complete(slotRequest.getAllocationId()));
+ final SlotPoolGateway slotPoolGateway =
setupSlotPool(slotPool, resourceManagerGateway);
+
+ final CompletableFuture<LogicalSlot> slotFuture =
allocateSlot(slotPoolGateway, new SlotRequestId());
+
+ final AllocationID allocationId =
allocationIdFuture.get();
+
+ assertThat(slotFuture.isDone(), is(false));
+
+ final FlinkException cause = new FlinkException("Fail
pending slot request failure.");
+ final
CompletableFuture<SerializableOptional<ResourceID>> responseFuture =
slotPoolGateway.failAllocation(allocationId, cause);
+
+ assertThat(responseFuture.get().isPresent(), is(false));
+
+ try {
+ slotFuture.get();
+ fail("Expected a slot allocation failure.");
+ } catch (ExecutionException ee) {
+
assertThat(ExceptionUtils.stripExecutionException(ee), equalTo(cause));
+ }
+ } finally {
+ RpcUtils.terminateRpcEndpoint(slotPool, timeout);
+ }
+ }
+
+ private CompletableFuture<LogicalSlot> allocateSlot(SlotPoolGateway
slotPoolGateway, SlotRequestId slotRequestId) {
+ return slotPoolGateway.allocateSlot(
+ slotRequestId,
+ new DummyScheduledUnit(),
+ SlotProfile.noRequirements(),
+ true,
+ timeout);
+ }
+
private static SlotPoolGateway setupSlotPool(
SlotPool slotPool,
ResourceManagerGateway resourceManagerGateway) throws
Exception {
@@ -750,13 +854,4 @@ private static SlotPoolGateway setupSlotPool(
return slotPool.getSelfGateway(SlotPoolGateway.class);
}
-
- private AllocatedSlot createSlot(final AllocationID allocationId) {
- return new AllocatedSlot(
- allocationId,
- taskManagerLocation,
- 0,
- ResourceProfile.UNKNOWN,
- taskManagerGateway);
- }
}
diff --git
a/flink-runtime/src/test/java/org/apache/flink/runtime/taskexecutor/TestingTaskExecutorGateway.java
b/flink-runtime/src/test/java/org/apache/flink/runtime/taskexecutor/TestingTaskExecutorGateway.java
index a9e99495e34..912de36c881 100644
---
a/flink-runtime/src/test/java/org/apache/flink/runtime/taskexecutor/TestingTaskExecutorGateway.java
+++
b/flink-runtime/src/test/java/org/apache/flink/runtime/taskexecutor/TestingTaskExecutorGateway.java
@@ -59,13 +59,16 @@
private final Function<Tuple5<SlotID, JobID, AllocationID, String,
ResourceManagerId>, CompletableFuture<Acknowledge>> requestSlotFunction;
- TestingTaskExecutorGateway(String address, String hostname,
Consumer<ResourceID> heartbeatJobManagerConsumer, BiConsumer<JobID, Throwable>
disconnectJobManagerConsumer, BiFunction<TaskDeploymentDescriptor, JobMasterId,
CompletableFuture<Acknowledge>> submitTaskConsumer, Function<Tuple5<SlotID,
JobID, AllocationID, String, ResourceManagerId>,
CompletableFuture<Acknowledge>> requestSlotFunction) {
+ private final BiFunction<AllocationID, Throwable,
CompletableFuture<Acknowledge>> freeSlotFunction;
+
+ TestingTaskExecutorGateway(String address, String hostname,
Consumer<ResourceID> heartbeatJobManagerConsumer, BiConsumer<JobID, Throwable>
disconnectJobManagerConsumer, BiFunction<TaskDeploymentDescriptor, JobMasterId,
CompletableFuture<Acknowledge>> submitTaskConsumer, Function<Tuple5<SlotID,
JobID, AllocationID, String, ResourceManagerId>,
CompletableFuture<Acknowledge>> requestSlotFunction, BiFunction<AllocationID,
Throwable, CompletableFuture<Acknowledge>> freeSlotFunction) {
this.address = Preconditions.checkNotNull(address);
this.hostname = Preconditions.checkNotNull(hostname);
this.heartbeatJobManagerConsumer =
Preconditions.checkNotNull(heartbeatJobManagerConsumer);
this.disconnectJobManagerConsumer =
Preconditions.checkNotNull(disconnectJobManagerConsumer);
this.submitTaskConsumer =
Preconditions.checkNotNull(submitTaskConsumer);
this.requestSlotFunction =
Preconditions.checkNotNull(requestSlotFunction);
+ this.freeSlotFunction =
Preconditions.checkNotNull(freeSlotFunction);
}
@Override
@@ -141,7 +144,7 @@ public void disconnectResourceManager(Exception cause) {
@Override
public CompletableFuture<Acknowledge> freeSlot(AllocationID
allocationId, Throwable cause, Time timeout) {
- return CompletableFuture.completedFuture(Acknowledge.get());
+ return freeSlotFunction.apply(allocationId, cause);
}
@Override
diff --git
a/flink-runtime/src/test/java/org/apache/flink/runtime/taskexecutor/TestingTaskExecutorGatewayBuilder.java
b/flink-runtime/src/test/java/org/apache/flink/runtime/taskexecutor/TestingTaskExecutorGatewayBuilder.java
index 1c2f1328a5a..e59eefd0c8d 100644
---
a/flink-runtime/src/test/java/org/apache/flink/runtime/taskexecutor/TestingTaskExecutorGatewayBuilder.java
+++
b/flink-runtime/src/test/java/org/apache/flink/runtime/taskexecutor/TestingTaskExecutorGatewayBuilder.java
@@ -43,6 +43,7 @@
private static final BiConsumer<JobID, Throwable>
NOOP_DISCONNECT_JOBMANAGER_CONSUMER = (ignoredA, ignoredB) -> {};
private static final BiFunction<TaskDeploymentDescriptor, JobMasterId,
CompletableFuture<Acknowledge>> NOOP_SUBMIT_TASK_CONSUMER = (ignoredA,
ignoredB) -> CompletableFuture.completedFuture(Acknowledge.get());
private static final Function<Tuple5<SlotID, JobID, AllocationID,
String, ResourceManagerId>, CompletableFuture<Acknowledge>>
NOOP_REQUEST_SLOT_FUNCTION = ignored ->
CompletableFuture.completedFuture(Acknowledge.get());
+ private static final BiFunction<AllocationID, Throwable,
CompletableFuture<Acknowledge>> NOOP_FREE_SLOT_FUNCTION = (ignoredA, ignoredB)
-> CompletableFuture.completedFuture(Acknowledge.get());
private String address = "foobar:1234";
private String hostname = "foobar";
@@ -50,6 +51,7 @@
private BiConsumer<JobID, Throwable> disconnectJobManagerConsumer =
NOOP_DISCONNECT_JOBMANAGER_CONSUMER;
private BiFunction<TaskDeploymentDescriptor, JobMasterId,
CompletableFuture<Acknowledge>> submitTaskConsumer = NOOP_SUBMIT_TASK_CONSUMER;
private Function<Tuple5<SlotID, JobID, AllocationID, String,
ResourceManagerId>, CompletableFuture<Acknowledge>> requestSlotFunction =
NOOP_REQUEST_SLOT_FUNCTION;
+ private BiFunction<AllocationID, Throwable,
CompletableFuture<Acknowledge>> freeSlotFunction = NOOP_FREE_SLOT_FUNCTION;
public TestingTaskExecutorGatewayBuilder setAddress(String address) {
this.address = address;
@@ -81,7 +83,12 @@ public TestingTaskExecutorGatewayBuilder
setRequestSlotFunction(Function<Tuple5<
return this;
}
+ public TestingTaskExecutorGatewayBuilder
setFreeSlotFunction(BiFunction<AllocationID, Throwable,
CompletableFuture<Acknowledge>> freeSlotFunction) {
+ this.freeSlotFunction = freeSlotFunction;
+ return this;
+ }
+
public TestingTaskExecutorGateway createTestingTaskExecutorGateway() {
- return new TestingTaskExecutorGateway(address, hostname,
heartbeatJobManagerConsumer, disconnectJobManagerConsumer, submitTaskConsumer,
requestSlotFunction);
+ return new TestingTaskExecutorGateway(address, hostname,
heartbeatJobManagerConsumer, disconnectJobManagerConsumer, submitTaskConsumer,
requestSlotFunction, freeSlotFunction);
}
}
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> Release TaskExecutors from SlotPool if all slots have been removed
> ------------------------------------------------------------------
>
> Key: FLINK-9912
> URL: https://issues.apache.org/jira/browse/FLINK-9912
> Project: Flink
> Issue Type: Improvement
> Components: Distributed Coordination
> Affects Versions: 1.5.1, 1.6.0
> Reporter: Till Rohrmann
> Assignee: Till Rohrmann
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.7.0
>
>
> Currently, it is possible to fail slot allocations in the {{SlotPool}}.
> Failing an allocation means that the slot is removed from the {{SlotPool}}.
> If we have removed all slots from a {{TaskExecutor}}, then we should also
> release/close the connection to this {{TaskExecutor}}. At the moment, this
> only happens via the heartbeats if the {{TaskExecutor}} has become
> unreachable.
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