org.apache.flink.runtime.checkpoint.metadata.MetadataV1Serializer Maven / Gradle / Ivy
/*
* 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.checkpoint.metadata;
import org.apache.flink.annotation.Internal;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
/**
* Deserializer for checkpoints written in format {@code 1} (Flink 1.2.x format). This class is only
* retained to give a better error message: Rather than getting a "unknown version", the user gets a
* "version no longer supported".
*/
@Internal
public class MetadataV1Serializer implements MetadataSerializer {
/** The savepoint version. */
public static final int VERSION = 1;
public static final MetadataV1Serializer INSTANCE = new MetadataV1Serializer();
private MetadataV1Serializer() {}
@Override
public int getVersion() {
return VERSION;
}
@Override
public CheckpointMetadata deserialize(
DataInputStream dis, ClassLoader cl, String externalPointer) throws IOException {
throw new IOException(
"This savepoint / checkpoint version (Flink 1.1 / 1.2) is no longer supported.");
}
@Override
public void serialize(CheckpointMetadata checkpointMetadata, DataOutputStream dos)
throws IOException {
throw new UnsupportedOperationException(
"Serialization in v" + getVersion() + " is no longer supported");
}
}