spark StoreVersion 源码
spark StoreVersion 代码
文件路径：/common/network-common/src/main/java/org/apache/spark/network/shuffledb/StoreVersion.java
/*
* 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.spark.network.shuffledb;
import java.nio.charset.StandardCharsets;
import com.fasterxml.jackson.annotation.JsonCreator;
import com.fasterxml.jackson.annotation.JsonProperty;
/**
* Used to identify the version of data stored in local shuffle state DB.
*/
public class StoreVersion {
public static final byte[] KEY = "StoreVersion".getBytes(StandardCharsets.UTF_8);
public final int major;
public final int minor;
@JsonCreator
public StoreVersion(@JsonProperty("major") int major, @JsonProperty("minor") int minor) {
this.major = major;
this.minor = minor;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
StoreVersion that = (StoreVersion) o;
return major == that.major && minor == that.minor;
}
@Override
public int hashCode() {
int result = major;
result = 31 * result + minor;
return result;
}
}
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