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Posted to issues@flink.apache.org by GitBox <gi...@apache.org> on 2022/06/27 07:47:02 UTC
[GitHub] [flink] wanglijie95 opened a new pull request, #20079: [FLINK-28143][runtime] Introduce BlocklistHandler
wanglijie95 opened a new pull request, #20079:
URL: https://github.com/apache/flink/pull/20079
## What is the purpose of the change
Introduce BlocklistHandler
## Verifying this change
Unit tests.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (**no**)
- The public API, i.e., is any changed class annotated with `@Public(Evolving)`: (**no**)
- The serializers: (**no**)
- The runtime per-record code paths (performance sensitive): (**no**)
- Anything that affects deployment or recovery: JobManager (and its components), Checkpointing, Kubernetes/Yarn, ZooKeeper: (**no**)
- The S3 file system connector: (**no**)
## Documentation
- Does this pull request introduce a new feature? (**no**)
- If yes, how is the feature documented? (**not applicable**)
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[GitHub] [flink] zhuzhurk closed pull request #20079: [FLINK-28143][runtime] Introduce BlocklistHandler
Posted by GitBox <gi...@apache.org>.
zhuzhurk closed pull request #20079: [FLINK-28143][runtime] Introduce BlocklistHandler
URL: https://github.com/apache/flink/pull/20079
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[GitHub] [flink] wanglijie95 commented on a diff in pull request #20079: [FLINK-28143][runtime] Introduce BlocklistHandler
Posted by GitBox <gi...@apache.org>.
wanglijie95 commented on code in PR #20079:
URL: https://github.com/apache/flink/pull/20079#discussion_r911836101
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/DefaultBlocklistHandler.java:
##########
@@ -0,0 +1,181 @@
+/*
+ * 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.blocklist;
+
+import org.apache.flink.api.common.time.Time;
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
+import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutor;
+
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ScheduledFuture;
+import java.util.concurrent.TimeUnit;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+
+/** Default implementation of {@link BlocklistHandler}. */
+public class DefaultBlocklistHandler implements BlocklistHandler, AutoCloseable {
+
+ private final Logger log;
+
+ private final Map<ResourceID, String> taskManagerToNode;
+
+ private final BlocklistTracker blocklistTracker;
+
+ private final BlocklistContext blocklistContext;
+
+ private final Set<BlocklistListener> blocklistListeners = new HashSet<>();
+
+ private final Time timeoutCheckInterval;
+
+ private volatile ScheduledFuture<?> timeoutCheckFuture;
+
+ private final ComponentMainThreadExecutor mainThreadExecutor;
+
+ public DefaultBlocklistHandler(
+ BlocklistTracker blocklistTracker,
+ BlocklistContext blocklistContext,
+ Map<ResourceID, String> taskManagerToNode,
+ Time timeoutCheckInterval,
+ ComponentMainThreadExecutor mainThreadExecutor,
+ Logger log) {
+ this.blocklistTracker = checkNotNull(blocklistTracker);
+ this.blocklistContext = checkNotNull(blocklistContext);
+ this.taskManagerToNode = checkNotNull(taskManagerToNode);
+ this.timeoutCheckInterval = checkNotNull(timeoutCheckInterval);
+ this.mainThreadExecutor = checkNotNull(mainThreadExecutor);
+ this.log = checkNotNull(log);
+
+ scheduleTimeoutCheck();
+ }
+
+ private void scheduleTimeoutCheck() {
+ this.timeoutCheckFuture =
+ mainThreadExecutor.schedule(
+ () -> {
+ removeTimeoutNodes();
+ scheduleTimeoutCheck();
+ },
+ timeoutCheckInterval.toMilliseconds(),
+ TimeUnit.MILLISECONDS);
+ }
+
+ private void removeTimeoutNodes() {
+ Collection<BlockedNode> removedNodes =
+ blocklistTracker.removeTimeoutNodes(System.currentTimeMillis());
+ if (!removedNodes.isEmpty()) {
+ if (log.isDebugEnabled()) {
+ log.debug(
+ "Timeout removed blocked nodes: {}, details {}. "
+ + "Total blocked nodes currently: {}, details: {}.",
+ removedNodes.size(),
+ removedNodes,
+ blocklistTracker.getAllBlockedNodes().size(),
+ blocklistTracker.getAllBlockedNodes());
+ } else {
+ log.info(
+ "Timeout removed blocked nodes: {}."
+ + " Total blocked nodes currently: {}.",
+ removedNodes.size(),
+ blocklistTracker.getAllBlockedNodes().size());
+ }
+ blocklistContext.unBlockResources(removedNodes);
+ }
+ }
+
+ private void assertRunningInMainThread() {
+ mainThreadExecutor.assertRunningInMainThread();
+ }
+
+ @Override
+ public void addNewBlockedNodes(Collection<BlockedNode> newNodes) {
+ assertRunningInMainThread();
+
+ Collection<BlockedNode> newlyAddedOrMerged = blocklistTracker.addNewBlockedNodes(newNodes);
+ if (!newlyAddedOrMerged.isEmpty()) {
+ if (log.isDebugEnabled()) {
+ log.debug(
+ "Newly added/merged blocked nodes: {}, details: {}."
+ + " Total blocked nodes currently: {}, details: {}.",
+ newlyAddedOrMerged.size(),
+ newlyAddedOrMerged,
+ blocklistTracker.getAllBlockedNodes().size(),
+ blocklistTracker.getAllBlockedNodes());
+ } else {
+ log.info(
+ "Newly added/merged blocked nodes: {}."
+ + " Total blocked nodes currently: {}.",
+ newlyAddedOrMerged.size(),
+ blocklistTracker.getAllBlockedNodes().size());
+ }
+
+ blocklistListeners.forEach(
+ listener -> listener.notifyNewBlockedNodes(newlyAddedOrMerged));
+ blocklistContext.blockResources(newlyAddedOrMerged);
+ }
+ }
+
+ @Override
+ public boolean isBlockedTaskManager(ResourceID taskManagerId) {
+ assertRunningInMainThread();
+
+ return taskManagerToNode.containsKey(taskManagerId)
Review Comment:
You are right, we never expect it fails to retrieve the node id of a task manager.
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[GitHub] [flink] zhuzhurk commented on a diff in pull request #20079: [FLINK-28143][runtime] Introduce BlocklistHandler
Posted by GitBox <gi...@apache.org>.
zhuzhurk commented on code in PR #20079:
URL: https://github.com/apache/flink/pull/20079#discussion_r911668395
##########
flink-runtime/src/test/java/org/apache/flink/runtime/blocklist/DefaultBlocklistHandlerTest.java:
##########
@@ -0,0 +1,209 @@
+/*
+ * 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.blocklist;
+
+import org.apache.flink.api.common.time.Time;
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
+import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutorServiceAdapter;
+import org.apache.flink.runtime.executiongraph.TestingComponentMainThreadExecutor;
+import org.apache.flink.runtime.testutils.CommonTestUtils;
+import org.apache.flink.util.TestLoggerExtension;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/** Test for {@link DefaultBlocklistHandler}. */
+@ExtendWith(TestLoggerExtension.class)
+class DefaultBlocklistHandlerTest {
+
+ private static final Logger LOG = LoggerFactory.getLogger(DefaultBlocklistHandlerTest.class);
+
+ private ScheduledExecutorService scheduledExecutorService;
+ private TestingComponentMainThreadExecutor mainThreadExecutor;
+
+ @BeforeEach
+ public void before() {
+ scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();
Review Comment:
you can use
```
@RegisterExtension
private static final TestExecutorExtension<ScheduledExecutorService> EXECUTOR_RESOURCE =
TestingUtils.defaultExecutorExtension();
```
and the executor can be `EXECUTOR_RESOURCE.getExecutor()`.
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/DefaultBlocklistHandler.java:
##########
@@ -0,0 +1,181 @@
+/*
+ * 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.blocklist;
+
+import org.apache.flink.api.common.time.Time;
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
+import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutor;
+
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ScheduledFuture;
+import java.util.concurrent.TimeUnit;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+
+/** Default implementation of {@link BlocklistHandler}. */
+public class DefaultBlocklistHandler implements BlocklistHandler, AutoCloseable {
+
+ private final Logger log;
+
+ private final Map<ResourceID, String> taskManagerToNode;
+
+ private final BlocklistTracker blocklistTracker;
+
+ private final BlocklistContext blocklistContext;
+
+ private final Set<BlocklistListener> blocklistListeners = new HashSet<>();
+
+ private final Time timeoutCheckInterval;
+
+ private volatile ScheduledFuture<?> timeoutCheckFuture;
+
+ private final ComponentMainThreadExecutor mainThreadExecutor;
+
+ public DefaultBlocklistHandler(
+ BlocklistTracker blocklistTracker,
+ BlocklistContext blocklistContext,
+ Map<ResourceID, String> taskManagerToNode,
+ Time timeoutCheckInterval,
+ ComponentMainThreadExecutor mainThreadExecutor,
+ Logger log) {
+ this.blocklistTracker = checkNotNull(blocklistTracker);
+ this.blocklistContext = checkNotNull(blocklistContext);
+ this.taskManagerToNode = checkNotNull(taskManagerToNode);
+ this.timeoutCheckInterval = checkNotNull(timeoutCheckInterval);
+ this.mainThreadExecutor = checkNotNull(mainThreadExecutor);
+ this.log = checkNotNull(log);
+
+ scheduleTimeoutCheck();
+ }
+
+ private void scheduleTimeoutCheck() {
+ this.timeoutCheckFuture =
+ mainThreadExecutor.schedule(
+ () -> {
+ removeTimeoutNodes();
+ scheduleTimeoutCheck();
+ },
+ timeoutCheckInterval.toMilliseconds(),
+ TimeUnit.MILLISECONDS);
+ }
+
+ private void removeTimeoutNodes() {
+ Collection<BlockedNode> removedNodes =
+ blocklistTracker.removeTimeoutNodes(System.currentTimeMillis());
+ if (!removedNodes.isEmpty()) {
+ if (log.isDebugEnabled()) {
+ log.debug(
+ "Timeout removed blocked nodes: {}, details {}. "
+ + "Total blocked nodes currently: {}, details: {}.",
+ removedNodes.size(),
+ removedNodes,
+ blocklistTracker.getAllBlockedNodes().size(),
+ blocklistTracker.getAllBlockedNodes());
+ } else {
+ log.info(
+ "Timeout removed blocked nodes: {}."
+ + " Total blocked nodes currently: {}.",
+ removedNodes.size(),
+ blocklistTracker.getAllBlockedNodes().size());
+ }
+ blocklistContext.unBlockResources(removedNodes);
+ }
+ }
+
+ private void assertRunningInMainThread() {
+ mainThreadExecutor.assertRunningInMainThread();
+ }
+
+ @Override
+ public void addNewBlockedNodes(Collection<BlockedNode> newNodes) {
+ assertRunningInMainThread();
+
+ Collection<BlockedNode> newlyAddedOrMerged = blocklistTracker.addNewBlockedNodes(newNodes);
+ if (!newlyAddedOrMerged.isEmpty()) {
+ if (log.isDebugEnabled()) {
+ log.debug(
+ "Newly added/merged blocked nodes: {}, details: {}."
Review Comment:
Newly added/merged blocked nodes: {} -> Newly added/merged {} blocked nodes
I feel the it was a bit misleading that the number is the id of the node or the count of the node.
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/BlocklistContext.java:
##########
@@ -0,0 +1,39 @@
+/*
+ * 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.blocklist;
+
+import java.util.Collection;
+
+/** This class is responsible for blocking and unblocking resources. */
+public interface BlocklistContext {
+
+ /**
+ * Block resources on the nodes.
+ *
+ * @param blockedNodes the blocked nodes
Review Comment:
the blocked nodes -> the nodes to block resources
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/BlocklistContext.java:
##########
@@ -0,0 +1,39 @@
+/*
+ * 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.blocklist;
+
+import java.util.Collection;
+
+/** This class is responsible for blocking and unblocking resources. */
+public interface BlocklistContext {
+
+ /**
+ * Block resources on the nodes.
+ *
+ * @param blockedNodes the blocked nodes
+ */
+ void blockResources(Collection<BlockedNode> blockedNodes);
+
+ /**
+ * Unblock resources on the nodes.
+ *
+ * @param unBlockedNodes the unBlocked nodes
Review Comment:
the unBlocked nodes -> the nodes to unblock resources
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/BlocklistHandler.java:
##########
@@ -0,0 +1,78 @@
+/*
+ * 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.blocklist;
+
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
+
+import java.util.Collection;
+import java.util.Collections;
+
+/**
+ * This class is responsible for managing all {@link BlockedNode}s and performing them on resources.
+ */
+public interface BlocklistHandler {
+
+ /**
+ * Block a node.
+ *
+ * @param nodeId ID of the node
+ * @param cause the cause for blocking the node
+ * @param endTimestamp the timestamp at which the node should be unblocked
+ */
+ default void blockNode(String nodeId, String cause, long endTimestamp) {
Review Comment:
Maybe remove this method because it will not be used in near future? The speculative scheduler may need to block nodes in a bulk way and therefore will use `addNewBlockedNodes`.
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/DefaultBlocklistHandler.java:
##########
@@ -0,0 +1,181 @@
+/*
+ * 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.blocklist;
+
+import org.apache.flink.api.common.time.Time;
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
+import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutor;
+
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ScheduledFuture;
+import java.util.concurrent.TimeUnit;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+
+/** Default implementation of {@link BlocklistHandler}. */
+public class DefaultBlocklistHandler implements BlocklistHandler, AutoCloseable {
+
+ private final Logger log;
+
+ private final Map<ResourceID, String> taskManagerToNode;
+
+ private final BlocklistTracker blocklistTracker;
+
+ private final BlocklistContext blocklistContext;
+
+ private final Set<BlocklistListener> blocklistListeners = new HashSet<>();
+
+ private final Time timeoutCheckInterval;
+
+ private volatile ScheduledFuture<?> timeoutCheckFuture;
+
+ private final ComponentMainThreadExecutor mainThreadExecutor;
+
+ public DefaultBlocklistHandler(
+ BlocklistTracker blocklistTracker,
+ BlocklistContext blocklistContext,
+ Map<ResourceID, String> taskManagerToNode,
+ Time timeoutCheckInterval,
+ ComponentMainThreadExecutor mainThreadExecutor,
+ Logger log) {
+ this.blocklistTracker = checkNotNull(blocklistTracker);
+ this.blocklistContext = checkNotNull(blocklistContext);
+ this.taskManagerToNode = checkNotNull(taskManagerToNode);
+ this.timeoutCheckInterval = checkNotNull(timeoutCheckInterval);
+ this.mainThreadExecutor = checkNotNull(mainThreadExecutor);
+ this.log = checkNotNull(log);
+
+ scheduleTimeoutCheck();
+ }
+
+ private void scheduleTimeoutCheck() {
+ this.timeoutCheckFuture =
+ mainThreadExecutor.schedule(
+ () -> {
+ removeTimeoutNodes();
+ scheduleTimeoutCheck();
+ },
+ timeoutCheckInterval.toMilliseconds(),
+ TimeUnit.MILLISECONDS);
+ }
+
+ private void removeTimeoutNodes() {
+ Collection<BlockedNode> removedNodes =
+ blocklistTracker.removeTimeoutNodes(System.currentTimeMillis());
+ if (!removedNodes.isEmpty()) {
+ if (log.isDebugEnabled()) {
+ log.debug(
+ "Timeout removed blocked nodes: {}, details {}. "
+ + "Total blocked nodes currently: {}, details: {}.",
+ removedNodes.size(),
+ removedNodes,
+ blocklistTracker.getAllBlockedNodes().size(),
+ blocklistTracker.getAllBlockedNodes());
+ } else {
+ log.info(
+ "Timeout removed blocked nodes: {}."
Review Comment:
Timeout removed blocked nodes: {}. -> Remove {} timeout blocked nodes.
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/DefaultBlocklistTracker.java:
##########
@@ -0,0 +1,100 @@
+/*
+ * 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.blocklist;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Optional;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+
+/** Default implementation of {@link BlocklistTracker}. */
+public class DefaultBlocklistTracker implements BlocklistTracker {
+ private final Map<String, BlockedNode> blockedNodes = new HashMap<>();
+
+ /**
+ * Try to add a new blocked node record. If the node (identified by node id) already exists, the
+ * newly added one will be merged with the existing one.
+ *
+ * @param newNode the new blocked node record
+ * @return the changed record, or {@link Optional#empty()} if no change
+ */
+ private Optional<BlockedNode> tryAddOrMerge(BlockedNode newNode) {
+ checkNotNull(newNode);
+ final String nodeId = newNode.getNodeId();
+ final BlockedNode existingNode = blockedNodes.get(nodeId);
+
+ if (existingNode == null) {
+ blockedNodes.put(nodeId, newNode);
+ return Optional.of(newNode);
+ } else if (!existingNode.equals(newNode)) {
+ BlockedNode merged = BlockedNode.merge(existingNode, newNode);
Review Comment:
If the merged node equals to the existing node, it should not be recognize it as changed.
##########
flink-runtime/src/test/java/org/apache/flink/runtime/blocklist/DefaultBlocklistHandlerTest.java:
##########
@@ -0,0 +1,209 @@
+/*
+ * 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.blocklist;
+
+import org.apache.flink.api.common.time.Time;
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
+import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutorServiceAdapter;
+import org.apache.flink.runtime.executiongraph.TestingComponentMainThreadExecutor;
+import org.apache.flink.runtime.testutils.CommonTestUtils;
+import org.apache.flink.util.TestLoggerExtension;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/** Test for {@link DefaultBlocklistHandler}. */
+@ExtendWith(TestLoggerExtension.class)
+class DefaultBlocklistHandlerTest {
+
+ private static final Logger LOG = LoggerFactory.getLogger(DefaultBlocklistHandlerTest.class);
+
+ private ScheduledExecutorService scheduledExecutorService;
+ private TestingComponentMainThreadExecutor mainThreadExecutor;
+
+ @BeforeEach
+ public void before() {
Review Comment:
can be package private
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/BlocklistContext.java:
##########
@@ -0,0 +1,39 @@
+/*
+ * 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.blocklist;
+
+import java.util.Collection;
+
+/** This class is responsible for blocking and unblocking resources. */
+public interface BlocklistContext {
+
+ /**
+ * Block resources on the nodes.
+ *
+ * @param blockedNodes the blocked nodes
+ */
+ void blockResources(Collection<BlockedNode> blockedNodes);
+
+ /**
+ * Unblock resources on the nodes.
+ *
+ * @param unBlockedNodes the unBlocked nodes
+ */
+ void unBlockResources(Collection<BlockedNode> unBlockedNodes);
Review Comment:
unBlockResources -> unblockResources
##########
flink-runtime/src/test/java/org/apache/flink/runtime/blocklist/DefaultBlocklistHandlerTest.java:
##########
@@ -0,0 +1,209 @@
+/*
+ * 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.blocklist;
+
+import org.apache.flink.api.common.time.Time;
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
+import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutorServiceAdapter;
+import org.apache.flink.runtime.executiongraph.TestingComponentMainThreadExecutor;
+import org.apache.flink.runtime.testutils.CommonTestUtils;
+import org.apache.flink.util.TestLoggerExtension;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/** Test for {@link DefaultBlocklistHandler}. */
+@ExtendWith(TestLoggerExtension.class)
Review Comment:
not needed
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/DefaultBlocklistHandler.java:
##########
@@ -0,0 +1,181 @@
+/*
+ * 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.blocklist;
+
+import org.apache.flink.api.common.time.Time;
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
+import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutor;
+
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ScheduledFuture;
+import java.util.concurrent.TimeUnit;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+
+/** Default implementation of {@link BlocklistHandler}. */
+public class DefaultBlocklistHandler implements BlocklistHandler, AutoCloseable {
+
+ private final Logger log;
+
+ private final Map<ResourceID, String> taskManagerToNode;
+
+ private final BlocklistTracker blocklistTracker;
+
+ private final BlocklistContext blocklistContext;
+
+ private final Set<BlocklistListener> blocklistListeners = new HashSet<>();
+
+ private final Time timeoutCheckInterval;
+
+ private volatile ScheduledFuture<?> timeoutCheckFuture;
+
+ private final ComponentMainThreadExecutor mainThreadExecutor;
+
+ public DefaultBlocklistHandler(
+ BlocklistTracker blocklistTracker,
+ BlocklistContext blocklistContext,
+ Map<ResourceID, String> taskManagerToNode,
+ Time timeoutCheckInterval,
+ ComponentMainThreadExecutor mainThreadExecutor,
+ Logger log) {
+ this.blocklistTracker = checkNotNull(blocklistTracker);
+ this.blocklistContext = checkNotNull(blocklistContext);
+ this.taskManagerToNode = checkNotNull(taskManagerToNode);
+ this.timeoutCheckInterval = checkNotNull(timeoutCheckInterval);
+ this.mainThreadExecutor = checkNotNull(mainThreadExecutor);
+ this.log = checkNotNull(log);
+
+ scheduleTimeoutCheck();
+ }
+
+ private void scheduleTimeoutCheck() {
+ this.timeoutCheckFuture =
+ mainThreadExecutor.schedule(
+ () -> {
+ removeTimeoutNodes();
+ scheduleTimeoutCheck();
+ },
+ timeoutCheckInterval.toMilliseconds(),
+ TimeUnit.MILLISECONDS);
+ }
+
+ private void removeTimeoutNodes() {
+ Collection<BlockedNode> removedNodes =
+ blocklistTracker.removeTimeoutNodes(System.currentTimeMillis());
+ if (!removedNodes.isEmpty()) {
+ if (log.isDebugEnabled()) {
+ log.debug(
+ "Timeout removed blocked nodes: {}, details {}. "
Review Comment:
Timeout removed blocked nodes: {}, details {}. -> Remove {} timeout blocked nodes, details: {}.
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/DefaultBlocklistHandler.java:
##########
@@ -0,0 +1,181 @@
+/*
+ * 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.blocklist;
+
+import org.apache.flink.api.common.time.Time;
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
+import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutor;
+
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ScheduledFuture;
+import java.util.concurrent.TimeUnit;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+
+/** Default implementation of {@link BlocklistHandler}. */
+public class DefaultBlocklistHandler implements BlocklistHandler, AutoCloseable {
+
+ private final Logger log;
+
+ private final Map<ResourceID, String> taskManagerToNode;
+
+ private final BlocklistTracker blocklistTracker;
+
+ private final BlocklistContext blocklistContext;
+
+ private final Set<BlocklistListener> blocklistListeners = new HashSet<>();
+
+ private final Time timeoutCheckInterval;
+
+ private volatile ScheduledFuture<?> timeoutCheckFuture;
+
+ private final ComponentMainThreadExecutor mainThreadExecutor;
+
+ public DefaultBlocklistHandler(
+ BlocklistTracker blocklistTracker,
+ BlocklistContext blocklistContext,
+ Map<ResourceID, String> taskManagerToNode,
+ Time timeoutCheckInterval,
+ ComponentMainThreadExecutor mainThreadExecutor,
+ Logger log) {
+ this.blocklistTracker = checkNotNull(blocklistTracker);
+ this.blocklistContext = checkNotNull(blocklistContext);
+ this.taskManagerToNode = checkNotNull(taskManagerToNode);
+ this.timeoutCheckInterval = checkNotNull(timeoutCheckInterval);
+ this.mainThreadExecutor = checkNotNull(mainThreadExecutor);
+ this.log = checkNotNull(log);
+
+ scheduleTimeoutCheck();
+ }
+
+ private void scheduleTimeoutCheck() {
+ this.timeoutCheckFuture =
+ mainThreadExecutor.schedule(
+ () -> {
+ removeTimeoutNodes();
+ scheduleTimeoutCheck();
+ },
+ timeoutCheckInterval.toMilliseconds(),
+ TimeUnit.MILLISECONDS);
+ }
+
+ private void removeTimeoutNodes() {
+ Collection<BlockedNode> removedNodes =
+ blocklistTracker.removeTimeoutNodes(System.currentTimeMillis());
+ if (!removedNodes.isEmpty()) {
+ if (log.isDebugEnabled()) {
+ log.debug(
+ "Timeout removed blocked nodes: {}, details {}. "
+ + "Total blocked nodes currently: {}, details: {}.",
+ removedNodes.size(),
+ removedNodes,
+ blocklistTracker.getAllBlockedNodes().size(),
+ blocklistTracker.getAllBlockedNodes());
+ } else {
+ log.info(
+ "Timeout removed blocked nodes: {}."
+ + " Total blocked nodes currently: {}.",
+ removedNodes.size(),
+ blocklistTracker.getAllBlockedNodes().size());
+ }
+ blocklistContext.unBlockResources(removedNodes);
+ }
+ }
+
+ private void assertRunningInMainThread() {
+ mainThreadExecutor.assertRunningInMainThread();
+ }
+
+ @Override
+ public void addNewBlockedNodes(Collection<BlockedNode> newNodes) {
+ assertRunningInMainThread();
+
+ Collection<BlockedNode> newlyAddedOrMerged = blocklistTracker.addNewBlockedNodes(newNodes);
+ if (!newlyAddedOrMerged.isEmpty()) {
+ if (log.isDebugEnabled()) {
+ log.debug(
+ "Newly added/merged blocked nodes: {}, details: {}."
+ + " Total blocked nodes currently: {}, details: {}.",
+ newlyAddedOrMerged.size(),
+ newlyAddedOrMerged,
+ blocklistTracker.getAllBlockedNodes().size(),
+ blocklistTracker.getAllBlockedNodes());
+ } else {
+ log.info(
+ "Newly added/merged blocked nodes: {}."
+ + " Total blocked nodes currently: {}.",
+ newlyAddedOrMerged.size(),
+ blocklistTracker.getAllBlockedNodes().size());
+ }
+
+ blocklistListeners.forEach(
+ listener -> listener.notifyNewBlockedNodes(newlyAddedOrMerged));
+ blocklistContext.blockResources(newlyAddedOrMerged);
+ }
+ }
+
+ @Override
+ public boolean isBlockedTaskManager(ResourceID taskManagerId) {
+ assertRunningInMainThread();
+
+ return taskManagerToNode.containsKey(taskManagerId)
Review Comment:
I would suggest `checkState(taskManagerToNode.containsKey(taskManagerId))` because we never expect it fails to retrieve the node id of a task manager.
Or is there any racing case that the `taskManagerToNode` is cleaned but the `isBlockedTaskManager()` is invoked after that?
##########
flink-runtime/src/test/java/org/apache/flink/runtime/blocklist/DefaultBlocklistHandlerTest.java:
##########
@@ -0,0 +1,209 @@
+/*
+ * 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.blocklist;
+
+import org.apache.flink.api.common.time.Time;
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
+import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutorServiceAdapter;
+import org.apache.flink.runtime.executiongraph.TestingComponentMainThreadExecutor;
+import org.apache.flink.runtime.testutils.CommonTestUtils;
+import org.apache.flink.util.TestLoggerExtension;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/** Test for {@link DefaultBlocklistHandler}. */
+@ExtendWith(TestLoggerExtension.class)
+class DefaultBlocklistHandlerTest {
+
+ private static final Logger LOG = LoggerFactory.getLogger(DefaultBlocklistHandlerTest.class);
+
+ private ScheduledExecutorService scheduledExecutorService;
+ private TestingComponentMainThreadExecutor mainThreadExecutor;
+
+ @BeforeEach
+ public void before() {
+ scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();
+ mainThreadExecutor =
+ new TestingComponentMainThreadExecutor(
+ ComponentMainThreadExecutorServiceAdapter.forSingleThreadExecutor(
+ scheduledExecutorService));
+ }
+
+ @AfterEach
+ public void after() {
Review Comment:
can be package private
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/DefaultBlocklistHandler.java:
##########
@@ -0,0 +1,181 @@
+/*
+ * 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.blocklist;
+
+import org.apache.flink.api.common.time.Time;
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
+import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutor;
+
+import org.slf4j.Logger;
+
+import java.util.Collection;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ScheduledFuture;
+import java.util.concurrent.TimeUnit;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+
+/** Default implementation of {@link BlocklistHandler}. */
+public class DefaultBlocklistHandler implements BlocklistHandler, AutoCloseable {
+
+ private final Logger log;
+
+ private final Map<ResourceID, String> taskManagerToNode;
Review Comment:
I prefer it to be `Function<ResourceID, String> taskManagerNodeIdRetriever; `
Because the map is actually changing outside. And it is misleading if we pass in a changing map.
##########
flink-runtime/src/test/java/org/apache/flink/runtime/blocklist/DefaultBlocklistHandlerTest.java:
##########
@@ -0,0 +1,209 @@
+/*
+ * 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.blocklist;
+
+import org.apache.flink.api.common.time.Time;
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
+import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutorServiceAdapter;
+import org.apache.flink.runtime.executiongraph.TestingComponentMainThreadExecutor;
+import org.apache.flink.runtime.testutils.CommonTestUtils;
+import org.apache.flink.util.TestLoggerExtension;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/** Test for {@link DefaultBlocklistHandler}. */
+@ExtendWith(TestLoggerExtension.class)
+class DefaultBlocklistHandlerTest {
+
+ private static final Logger LOG = LoggerFactory.getLogger(DefaultBlocklistHandlerTest.class);
+
+ private ScheduledExecutorService scheduledExecutorService;
+ private TestingComponentMainThreadExecutor mainThreadExecutor;
+
+ @BeforeEach
+ public void before() {
+ scheduledExecutorService = Executors.newSingleThreadScheduledExecutor();
+ mainThreadExecutor =
Review Comment:
By using `ComponentMainThreadExecutorServiceAdapter.forMainThread()` being the `mainThreadExecutor`, the test main thread will be treated as the main thread. Then it is not need to `mainThreadExecutor.execute(...`
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/BlocklistTracker.java:
##########
@@ -0,0 +1,64 @@
+/*
+ * 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.blocklist;
+
+import java.util.Collection;
+
+/** A tracker for blocklist. */
+public interface BlocklistTracker {
+
+ /**
+ * Add new blocked node records. If a node (identified by node id) already exists, the newly
+ * added one will be merged with the existing one.
+ *
+ * @param newNodes the new blocked node records
+ * @return the changes of blocklist after execution, which will be synchronized to other JMs/RM
+ */
+ Collection<BlockedNode> addNewBlockedNodes(Collection<BlockedNode> newNodes);
+
+ /**
+ * Returns whether the given node is blocked.
+ *
+ * @param nodeId ID of the node to query
+ * @return true if the given node is blocked, otherwise false
+ */
+ boolean isBlockedNode(String nodeId);
+
+ /**
+ * Get all blocked node ids.
+ *
+ * @return a collection containing all blocked node ids
+ */
+ Collection<String> getAllBlockedNodeIds();
Review Comment:
Collection<String> -> Set<String>
From the latter PoC, I see that the result will be treated as a `Set`. (e.g. used to check if it equals to another set)
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/BlockedNode.java:
##########
@@ -0,0 +1,100 @@
+/*
+ * 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.blocklist;
+
+import java.io.Serializable;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+import static org.apache.flink.util.Preconditions.checkState;
+
+/** This class represents a blocked node record. */
+public class BlockedNode implements Serializable {
Review Comment:
A `serialVersionUID` should be added. See https://flink.apache.org/contributing/code-style-and-quality-java.html#java-serialization.
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/BlockedNode.java:
##########
@@ -0,0 +1,100 @@
+/*
+ * 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.blocklist;
+
+import java.io.Serializable;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+import static org.apache.flink.util.Preconditions.checkState;
+
+/** This class represents a blocked node record. */
+public class BlockedNode implements Serializable {
+
+ private final String nodeId;
+
+ private final Set<String> causes = new HashSet<>();
+
+ private final long endTimestamp;
+
+ BlockedNode(String nodeId, String cause, long endTimestamp) {
+ this(nodeId, Collections.singleton(cause), endTimestamp);
+ }
+
+ BlockedNode(String nodeId, Collection<String> causes, long endTimestamp) {
+ this.nodeId = checkNotNull(nodeId);
+ this.causes.addAll(checkNotNull(causes));
+ this.endTimestamp = endTimestamp;
+ }
+
+ public String getNodeId() {
+ return nodeId;
+ }
+
+ public Collection<String> getCauses() {
+ return causes;
+ }
+
+ public long getEndTimestamp() {
+ return endTimestamp;
+ }
+
+ public static BlockedNode merge(BlockedNode node, BlockedNode other) {
+ checkNotNull(node);
+ checkNotNull(other);
+ checkState(node.nodeId.equals(other.nodeId));
+
+ Set<String> mergedCauses = new HashSet<>();
+ mergedCauses.addAll(node.causes);
+ mergedCauses.addAll(other.causes);
+
+ long mergedEndTimestamp = Math.max(node.endTimestamp, other.endTimestamp);
Review Comment:
How about just to keep the latest cause (the cause with the largest endTimestamp)?
Keeping a lot of historical causes is not good and can also be misleading in some cases.
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[GitHub] [flink] wanglijie95 commented on a diff in pull request #20079: [FLINK-28143][runtime] Introduce BlocklistHandler
Posted by GitBox <gi...@apache.org>.
wanglijie95 commented on code in PR #20079:
URL: https://github.com/apache/flink/pull/20079#discussion_r911835345
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/BlocklistContext.java:
##########
@@ -0,0 +1,39 @@
+/*
+ * 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.blocklist;
+
+import java.util.Collection;
+
+/** This class is responsible for blocking and unblocking resources. */
+public interface BlocklistContext {
+
+ /**
+ * Block resources on the nodes.
+ *
+ * @param blockedNodes the blocked nodes
+ */
+ void blockResources(Collection<BlockedNode> blockedNodes);
+
+ /**
+ * Unblock resources on the nodes.
+ *
+ * @param unBlockedNodes the unBlocked nodes
+ */
+ void unBlockResources(Collection<BlockedNode> unBlockedNodes);
Review Comment:
OK
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/BlocklistContext.java:
##########
@@ -0,0 +1,39 @@
+/*
+ * 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.blocklist;
+
+import java.util.Collection;
+
+/** This class is responsible for blocking and unblocking resources. */
+public interface BlocklistContext {
+
+ /**
+ * Block resources on the nodes.
+ *
+ * @param blockedNodes the blocked nodes
Review Comment:
OK
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/BlocklistContext.java:
##########
@@ -0,0 +1,39 @@
+/*
+ * 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.blocklist;
+
+import java.util.Collection;
+
+/** This class is responsible for blocking and unblocking resources. */
+public interface BlocklistContext {
+
+ /**
+ * Block resources on the nodes.
+ *
+ * @param blockedNodes the blocked nodes
+ */
+ void blockResources(Collection<BlockedNode> blockedNodes);
+
+ /**
+ * Unblock resources on the nodes.
+ *
+ * @param unBlockedNodes the unBlocked nodes
Review Comment:
OK
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[GitHub] [flink] wanglijie95 commented on a diff in pull request #20079: [FLINK-28143][runtime] Introduce BlocklistHandler
Posted by GitBox <gi...@apache.org>.
wanglijie95 commented on code in PR #20079:
URL: https://github.com/apache/flink/pull/20079#discussion_r911834985
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/BlockedNode.java:
##########
@@ -0,0 +1,100 @@
+/*
+ * 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.blocklist;
+
+import java.io.Serializable;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+import static org.apache.flink.util.Preconditions.checkState;
+
+/** This class represents a blocked node record. */
+public class BlockedNode implements Serializable {
+
+ private final String nodeId;
+
+ private final Set<String> causes = new HashSet<>();
+
+ private final long endTimestamp;
+
+ BlockedNode(String nodeId, String cause, long endTimestamp) {
+ this(nodeId, Collections.singleton(cause), endTimestamp);
+ }
+
+ BlockedNode(String nodeId, Collection<String> causes, long endTimestamp) {
+ this.nodeId = checkNotNull(nodeId);
+ this.causes.addAll(checkNotNull(causes));
+ this.endTimestamp = endTimestamp;
+ }
+
+ public String getNodeId() {
+ return nodeId;
+ }
+
+ public Collection<String> getCauses() {
+ return causes;
+ }
+
+ public long getEndTimestamp() {
+ return endTimestamp;
+ }
+
+ public static BlockedNode merge(BlockedNode node, BlockedNode other) {
+ checkNotNull(node);
+ checkNotNull(other);
+ checkState(node.nodeId.equals(other.nodeId));
+
+ Set<String> mergedCauses = new HashSet<>();
+ mergedCauses.addAll(node.causes);
+ mergedCauses.addAll(other.causes);
+
+ long mergedEndTimestamp = Math.max(node.endTimestamp, other.endTimestamp);
Review Comment:
Make sense. Assume the existing one is A, new one is B, A.endTimestamp == B.endTimestamp and A.cause != B.cause. Then I think the merged one should be [B.endTimestamp, B.cause] . WDYT?
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[GitHub] [flink] wanglijie95 commented on a diff in pull request #20079: [FLINK-28143][runtime] Introduce BlocklistHandler
Posted by GitBox <gi...@apache.org>.
wanglijie95 commented on code in PR #20079:
URL: https://github.com/apache/flink/pull/20079#discussion_r911835511
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/BlocklistHandler.java:
##########
@@ -0,0 +1,78 @@
+/*
+ * 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.blocklist;
+
+import org.apache.flink.runtime.clusterframework.types.ResourceID;
+
+import java.util.Collection;
+import java.util.Collections;
+
+/**
+ * This class is responsible for managing all {@link BlockedNode}s and performing them on resources.
+ */
+public interface BlocklistHandler {
+
+ /**
+ * Block a node.
+ *
+ * @param nodeId ID of the node
+ * @param cause the cause for blocking the node
+ * @param endTimestamp the timestamp at which the node should be unblocked
+ */
+ default void blockNode(String nodeId, String cause, long endTimestamp) {
Review Comment:
OK
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[GitHub] [flink] wanglijie95 commented on pull request #20079: [FLINK-28143][runtime] Introduce BlocklistHandler
Posted by GitBox <gi...@apache.org>.
wanglijie95 commented on PR #20079:
URL: https://github.com/apache/flink/pull/20079#issuecomment-1172195743
Thanks for review @zhuzhurk. I 've addressed all comments, please take a look.
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[GitHub] [flink] flinkbot commented on pull request #20079: [FLINK-28143][runtime] Introduce BlocklistHandler
Posted by GitBox <gi...@apache.org>.
flinkbot commented on PR #20079:
URL: https://github.com/apache/flink/pull/20079#issuecomment-1167007602
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## CI report:
* 4e14674d225f6ec980382041d6b4ddde5df3121a UNKNOWN
<details>
<summary>Bot commands</summary>
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[GitHub] [flink] zhuzhurk commented on a diff in pull request #20079: [FLINK-28143][runtime] Introduce BlocklistHandler
Posted by GitBox <gi...@apache.org>.
zhuzhurk commented on code in PR #20079:
URL: https://github.com/apache/flink/pull/20079#discussion_r911968694
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/BlockedNode.java:
##########
@@ -0,0 +1,100 @@
+/*
+ * 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.blocklist;
+
+import java.io.Serializable;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+import static org.apache.flink.util.Preconditions.checkState;
+
+/** This class represents a blocked node record. */
+public class BlockedNode implements Serializable {
+
+ private final String nodeId;
+
+ private final Set<String> causes = new HashSet<>();
+
+ private final long endTimestamp;
+
+ BlockedNode(String nodeId, String cause, long endTimestamp) {
+ this(nodeId, Collections.singleton(cause), endTimestamp);
+ }
+
+ BlockedNode(String nodeId, Collection<String> causes, long endTimestamp) {
+ this.nodeId = checkNotNull(nodeId);
+ this.causes.addAll(checkNotNull(causes));
+ this.endTimestamp = endTimestamp;
+ }
+
+ public String getNodeId() {
+ return nodeId;
+ }
+
+ public Collection<String> getCauses() {
+ return causes;
+ }
+
+ public long getEndTimestamp() {
+ return endTimestamp;
+ }
+
+ public static BlockedNode merge(BlockedNode node, BlockedNode other) {
+ checkNotNull(node);
+ checkNotNull(other);
+ checkState(node.nodeId.equals(other.nodeId));
+
+ Set<String> mergedCauses = new HashSet<>();
+ mergedCauses.addAll(node.causes);
+ mergedCauses.addAll(other.causes);
+
+ long mergedEndTimestamp = Math.max(node.endTimestamp, other.endTimestamp);
Review Comment:
Looks good.
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[GitHub] [flink] wanglijie95 commented on a diff in pull request #20079: [FLINK-28143][runtime] Introduce BlocklistHandler
Posted by GitBox <gi...@apache.org>.
wanglijie95 commented on code in PR #20079:
URL: https://github.com/apache/flink/pull/20079#discussion_r911835119
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/BlockedNode.java:
##########
@@ -0,0 +1,100 @@
+/*
+ * 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.blocklist;
+
+import java.io.Serializable;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashSet;
+import java.util.Set;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+import static org.apache.flink.util.Preconditions.checkState;
+
+/** This class represents a blocked node record. */
+public class BlockedNode implements Serializable {
Review Comment:
OK
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/DefaultBlocklistTracker.java:
##########
@@ -0,0 +1,100 @@
+/*
+ * 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.blocklist;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+import java.util.Optional;
+
+import static org.apache.flink.util.Preconditions.checkNotNull;
+
+/** Default implementation of {@link BlocklistTracker}. */
+public class DefaultBlocklistTracker implements BlocklistTracker {
+ private final Map<String, BlockedNode> blockedNodes = new HashMap<>();
+
+ /**
+ * Try to add a new blocked node record. If the node (identified by node id) already exists, the
+ * newly added one will be merged with the existing one.
+ *
+ * @param newNode the new blocked node record
+ * @return the changed record, or {@link Optional#empty()} if no change
+ */
+ private Optional<BlockedNode> tryAddOrMerge(BlockedNode newNode) {
+ checkNotNull(newNode);
+ final String nodeId = newNode.getNodeId();
+ final BlockedNode existingNode = blockedNodes.get(nodeId);
+
+ if (existingNode == null) {
+ blockedNodes.put(nodeId, newNode);
+ return Optional.of(newNode);
+ } else if (!existingNode.equals(newNode)) {
+ BlockedNode merged = BlockedNode.merge(existingNode, newNode);
Review Comment:
OK
##########
flink-runtime/src/main/java/org/apache/flink/runtime/blocklist/BlocklistTracker.java:
##########
@@ -0,0 +1,64 @@
+/*
+ * 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.blocklist;
+
+import java.util.Collection;
+
+/** A tracker for blocklist. */
+public interface BlocklistTracker {
+
+ /**
+ * Add new blocked node records. If a node (identified by node id) already exists, the newly
+ * added one will be merged with the existing one.
+ *
+ * @param newNodes the new blocked node records
+ * @return the changes of blocklist after execution, which will be synchronized to other JMs/RM
+ */
+ Collection<BlockedNode> addNewBlockedNodes(Collection<BlockedNode> newNodes);
+
+ /**
+ * Returns whether the given node is blocked.
+ *
+ * @param nodeId ID of the node to query
+ * @return true if the given node is blocked, otherwise false
+ */
+ boolean isBlockedNode(String nodeId);
+
+ /**
+ * Get all blocked node ids.
+ *
+ * @return a collection containing all blocked node ids
+ */
+ Collection<String> getAllBlockedNodeIds();
Review Comment:
OK
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