Github user danny0405 commented on a diff in the pull request:
https://github.com/apache/storm/pull/2433#discussion_r158768248
--- Diff:
storm-server/src/main/java/org/apache/storm/nimbus/TimeOutWorkerHeartbeatsRecoveryStrategy.java
---
@@ -0,0 +1,86 @@
+/**
+ * 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
+ * <p/>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p/>
+ * 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.storm.nimbus;
+
+import org.apache.storm.Config;
+import org.apache.storm.utils.ObjectReader;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+
+/**
+ * Wait for a node to report worker heartbeats until a configured timeout.
For cases below we have strategies:
+ * <p>
+ * 1: When nimbus gains leader ship, it will decide if the heartbeats are
ready based on the reported node ids,
+ * supervisors/nodes will take care of the worker heartbeats recovery, a
reported node id means all the workers heartbeats on the node are reported.
+ * <p>
+ * 2: If several supervisor also crush and will never recover[or all crush
for some unknown reason],
+ * workers will report their heartbeats directly to master, so it has not
any effect.
+ */
+public class TimeOutWorkerHeartbeatsRecoveryStrategy implements
IWorkerHeartbeatsRecoveryStrategy {
+ private static final Logger LOG =
LoggerFactory.getLogger(TimeOutWorkerHeartbeatsRecoveryStrategy.class);
+
+ private static int NODE_MAX_TIMEOUT_SECS = 600;
+
+ private long startTimeSecs;
+
+ private Set<String> reportedIDs;
--- End diff --
done
---
