hadoop EncodingState 源码
haddop EncodingState 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/io/erasurecode/rawcoder/EncodingState.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.rawcoder;
import org.apache.hadoop.HadoopIllegalArgumentException;
import org.apache.hadoop.classification.InterfaceAudience;
/**
* A utility class that maintains encoding state during an encode call.
*/
@InterfaceAudience.Private
abstract class EncodingState {
RawErasureEncoder encoder;
int encodeLength;
/**
* Check and validate decoding parameters, throw exception accordingly.
* @param inputs input buffers to check
* @param outputs output buffers to check
*/
<T> void checkParameters(T[] inputs, T[] outputs) {
if (inputs.length != encoder.getNumDataUnits()) {
throw new HadoopIllegalArgumentException("Invalid inputs length");
}
if (outputs.length != encoder.getNumParityUnits()) {
throw new HadoopIllegalArgumentException("Invalid outputs length");
}
}
}
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