org.apache.flink.runtime.checkpoint.ZooKeeperCheckpointRecoveryFactory Maven / Gradle / Ivy
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* Licensed to the Apache Software Foundation (ASF) under one
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* 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,
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* See the License for the specific language governing permissions and
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*/
package org.apache.flink.runtime.checkpoint;
import org.apache.curator.framework.CuratorFramework;
import org.apache.flink.api.common.JobID;
import org.apache.flink.configuration.Configuration;
import org.apache.flink.runtime.jobmanager.RecoveryMode;
import org.apache.flink.runtime.util.ZooKeeperUtils;
import static org.apache.flink.util.Preconditions.checkNotNull;
/**
* {@link CheckpointCoordinator} components in {@link RecoveryMode#ZOOKEEPER}.
*/
public class ZooKeeperCheckpointRecoveryFactory implements CheckpointRecoveryFactory {
private final CuratorFramework client;
private final Configuration config;
public ZooKeeperCheckpointRecoveryFactory(CuratorFramework client, Configuration config) {
this.client = checkNotNull(client, "Curator client");
this.config = checkNotNull(config, "Configuration");
}
@Override
public void start() {
// Nothing to do
}
@Override
public void stop() {
client.close();
}
@Override
public CompletedCheckpointStore createCheckpointStore(JobID jobId, ClassLoader userClassLoader)
throws Exception {
return ZooKeeperUtils.createCompletedCheckpoints(client, config, jobId,
NUMBER_OF_SUCCESSFUL_CHECKPOINTS_TO_RETAIN, userClassLoader);
}
@Override
public CheckpointIDCounter createCheckpointIDCounter(JobID jobID) throws Exception {
return ZooKeeperUtils.createCheckpointIDCounter(client, config, jobID);
}
}