/**
* 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.contrib.index.mapred;
import java.io.IOException;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
/**
* A class implements an index updater interface should create a Map/Reduce job
* configuration and run the Map/Reduce job to analyze documents and update
* Lucene instances in parallel.
*/
public interface IIndexUpdater {
/**
* Create a Map/Reduce job configuration and run the Map/Reduce job to
* analyze documents and update Lucene instances in parallel.
* @param conf
* @param inputPaths
* @param outputPath
* @param numMapTasks
* @param shards
* @throws IOException
*/
void run(Configuration conf, Path[] inputPaths, Path outputPath,
int numMapTasks, Shard[] shards) throws IOException;
}