spark AbstractFetchShuffleBlocks 源码
spark AbstractFetchShuffleBlocks 代码
文件路径：/common/network-shuffle/src/main/java/org/apache/spark/network/shuffle/protocol/AbstractFetchShuffleBlocks.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.shuffle.protocol;
import com.google.common.base.Objects;
import io.netty.buffer.ByteBuf;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import org.apache.spark.network.protocol.Encoders;
/**
* Base class for fetch shuffle blocks and chunks.
*
* @since 3.2.0
*/
public abstract class AbstractFetchShuffleBlocks extends BlockTransferMessage {
public final String appId;
public final String execId;
public final int shuffleId;
protected AbstractFetchShuffleBlocks(
String appId,
String execId,
int shuffleId) {
this.appId = appId;
this.execId = execId;
this.shuffleId = shuffleId;
}
public ToStringBuilder toStringHelper() {
return new ToStringBuilder(this, ToStringStyle.SHORT_PREFIX_STYLE)
.append("appId", appId)
.append("execId", execId)
.append("shuffleId", shuffleId);
}
/**
* Returns number of blocks in the request.
*/
public abstract int getNumBlocks();
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
AbstractFetchShuffleBlocks that = (AbstractFetchShuffleBlocks) o;
return shuffleId == that.shuffleId
&& Objects.equal(appId, that.appId) && Objects.equal(execId, that.execId);
}
@Override
public int hashCode() {
int result = appId.hashCode();
result = 31 * result + execId.hashCode();
result = 31 * result + shuffleId;
return result;
}
@Override
public int encodedLength() {
return Encoders.Strings.encodedLength(appId)
+ Encoders.Strings.encodedLength(execId)
+ 4; /* encoded length of shuffleId */
}
@Override
public void encode(ByteBuf buf) {
Encoders.Strings.encode(buf, appId);
Encoders.Strings.encode(buf, execId);
buf.writeInt(shuffleId);
}
}
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