hadoop XORErasureCodec 源码
haddop XORErasureCodec 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/codec/XORErasureCodec.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.hadoop.io.erasurecode.codec;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.io.erasurecode.ErasureCodecOptions;
import org.apache.hadoop.io.erasurecode.coder.ErasureDecoder;
import org.apache.hadoop.io.erasurecode.coder.ErasureEncoder;
import org.apache.hadoop.io.erasurecode.coder.XORErasureDecoder;
import org.apache.hadoop.io.erasurecode.coder.XORErasureEncoder;
/**
* A XOR erasure codec.
*/
@InterfaceAudience.Private
public class XORErasureCodec extends ErasureCodec {
public XORErasureCodec(Configuration conf, ErasureCodecOptions options) {
super(conf, options);
assert(options.getSchema().getNumParityUnits() == 1);
}
@Override
public ErasureEncoder createEncoder() {
return new XORErasureEncoder(getCoderOptions());
}
@Override
public ErasureDecoder createDecoder() {
return new XORErasureDecoder(getCoderOptions());
}
}
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