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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.hbase.mob.compactions;
import java.io.IOException;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.ExecutorService;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.TableName;
import org.apache.yetus.audience.InterfaceAudience;
import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor;
import org.apache.hadoop.hbase.mob.MobUtils;
import org.apache.hadoop.hbase.util.FSUtils;
/**
* A mob compactor to directly compact the mob files.
*/
@InterfaceAudience.Private
public abstract class MobCompactor {
protected FileSystem fs;
protected Configuration conf;
protected TableName tableName;
protected ColumnFamilyDescriptor column;
protected Path mobTableDir;
protected Path mobFamilyDir;
protected ExecutorService pool;
public MobCompactor(Configuration conf, FileSystem fs, TableName tableName,
ColumnFamilyDescriptor column, ExecutorService pool) {
this.conf = conf;
this.fs = fs;
this.tableName = tableName;
this.column = column;
this.pool = pool;
mobTableDir = FSUtils.getTableDir(MobUtils.getMobHome(conf), tableName);
mobFamilyDir = MobUtils.getMobFamilyPath(conf, tableName, column.getNameAsString());
}
/**
* Compacts the mob files for the current column family.
* @return The paths of new mob files generated in the compaction.
* @throws IOException
*/
public List compact() throws IOException {
return compact(false);
}
/**
* Compacts the mob files by compaction type for the current column family.
* @param allFiles Whether add all mob files into the compaction.
* @return The paths of new mob files generated in the compaction.
* @throws IOException
*/
public List compact(boolean allFiles) throws IOException {
return compact(Arrays.asList(fs.listStatus(mobFamilyDir)), allFiles);
}
/**
* Compacts the candidate mob files.
* @param files The candidate mob files.
* @param allFiles Whether add all mob files into the compaction.
* @return The paths of new mob files generated in the compaction.
* @throws IOException
*/
public abstract List compact(List files, boolean allFiles)
throws IOException;
}