[flink] 01/02: [FLINK-28135][runtime] Introduce SlowTaskDetector

[zh...@apache.org]

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commit a0e8818d6967e5b0d14367d2095c91a05cadfe1f
Author: hongli <ho...@alibaba-inc.com>
AuthorDate: Thu Jun 23 11:04:00 2022 +0800

    [FLINK-28135][runtime] Introduce SlowTaskDetector
    
    This closes #20054.
---
 .../slowtaskdetector/SlowTaskDetector.java         | 36 ++++++++++++++++++++
 .../slowtaskdetector/SlowTaskDetectorListener.java | 38 ++++++++++++++++++++++
 2 files changed, 74 insertions(+)

diff --git a/flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/slowtaskdetector/SlowTaskDetector.java b/flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/slowtaskdetector/SlowTaskDetector.java
new file mode 100644
index 00000000000..a8bce9244d9
--- /dev/null
+++ b/flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/slowtaskdetector/SlowTaskDetector.java
@@ -0,0 +1,36 @@
+/*
+ * 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.scheduler.slowtaskdetector;
+
+import org.apache.flink.runtime.concurrent.ComponentMainThreadExecutor;
+import org.apache.flink.runtime.executiongraph.ExecutionGraph;
+
+/** Component responsible for detecting slow tasks. */
+public interface SlowTaskDetector {
+
+    /** Start detecting slow tasks periodically. */
+    void start(
+            ExecutionGraph executionGraph,
+            SlowTaskDetectorListener listener,
+            ComponentMainThreadExecutor mainThreadExecutor);
+
+    /** Stop detecting slow tasks. */
+    void stop();
+}
diff --git a/flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/slowtaskdetector/SlowTaskDetectorListener.java b/flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/slowtaskdetector/SlowTaskDetectorListener.java
new file mode 100644
index 00000000000..9aa466fcdfa
--- /dev/null
+++ b/flink-runtime/src/main/java/org/apache/flink/runtime/scheduler/slowtaskdetector/SlowTaskDetectorListener.java
@@ -0,0 +1,38 @@
+/*
+ * 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.scheduler.slowtaskdetector;
+
+import org.apache.flink.runtime.executiongraph.ExecutionAttemptID;
+import org.apache.flink.runtime.scheduler.strategy.ExecutionVertexID;
+
+import java.util.Collection;
+import java.util.Map;
+
+/** Component responsible for listening on slow tasks. */
+public interface SlowTaskDetectorListener {
+
+    /**
+     * Notify detected slow tasks.
+     *
+     * @param slowTasks the map of execution vertices and their execution attempts which are
+     *     detected as slow.
+     */
+    void notifySlowTasks(Map<ExecutionVertexID, Collection<ExecutionAttemptID>> slowTasks);
+}