HADOOP-11707. Add factory to create raw erasure coder. Contributed by Kai Zheng

This commit is contained in:
Kai Zheng 2015-03-20 15:07:00 +08:00 committed by Zhe Zhang
parent 57a84c0d14
commit 90d332d6be
4 changed files with 108 additions and 1 deletions

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HADOOP-11706. Refine a little bit erasure coder API. Contributed by Kai Zheng
( Kai Zheng )
HADOOP-11707. Add factory to create raw erasure coder. Contributed by Kai Zheng
( Kai Zheng )

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/**
* 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;
/**
* A raw coder factory for raw Reed-Solomon coder in Java.
*/
public class JRSRawErasureCoderFactory implements RawErasureCoderFactory {
@Override
public RawErasureEncoder createEncoder() {
return new JRSRawEncoder();
}
@Override
public RawErasureDecoder createDecoder() {
return new JRSRawDecoder();
}
}

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/**
* 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;
/**
* Raw erasure coder factory that can be used to create raw encoder and decoder.
* It helps in configuration since only one factory class is needed to be
* configured.
*/
public interface RawErasureCoderFactory {
/**
* Create raw erasure encoder.
* @return raw erasure encoder
*/
public RawErasureEncoder createEncoder();
/**
* Create raw erasure decoder.
* @return raw erasure decoder
*/
public RawErasureDecoder createDecoder();
}

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/**
* 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;
/**
* A raw coder factory for raw XOR coder.
*/
public class XorRawErasureCoderFactory implements RawErasureCoderFactory {
@Override
public RawErasureEncoder createEncoder() {
return new XorRawEncoder();
}
@Override
public RawErasureDecoder createDecoder() {
return new XorRawDecoder();
}
}