/**
* 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.regionserver.compactions;
import java.io.IOException;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.regionserver.DateTieredMultiFileWriter;
import org.apache.hadoop.hbase.regionserver.InternalScanner;
import org.apache.hadoop.hbase.regionserver.Store;
import org.apache.hadoop.hbase.regionserver.StoreFile;
import org.apache.hadoop.hbase.regionserver.throttle.ThroughputController;
import org.apache.hadoop.hbase.security.User;
/**
* This compactor will generate StoreFile for different time ranges.
*/
@InterfaceAudience.Private
public class DateTieredCompactor extends AbstractMultiOutputCompactor<DateTieredMultiFileWriter> {
private static final Log LOG = LogFactory.getLog(DateTieredCompactor.class);
public DateTieredCompactor(Configuration conf, Store store) {
super(conf, store);
}
private boolean needEmptyFile(CompactionRequest request) {
// if we are going to compact the last N files, then we need to emit an empty file to retain the
// maxSeqId if we haven't written out anything.
return StoreFile.getMaxSequenceIdInList(request.getFiles()) == store.getMaxSequenceId();
}
public List<Path> compact(final CompactionRequest request, final List<Long> lowerBoundaries,
ThroughputController throughputController, User user) throws IOException {
if (LOG.isDebugEnabled()) {
LOG.debug("Executing compaction with " + lowerBoundaries.size()
+ "windows, lower boundaries: " + lowerBoundaries);
}
return compact(request, defaultScannerFactory,
new CellSinkFactory<DateTieredMultiFileWriter>() {
@Override
public DateTieredMultiFileWriter createWriter(InternalScanner scanner, FileDetails fd,
boolean shouldDropBehind) throws IOException {
DateTieredMultiFileWriter writer = new DateTieredMultiFileWriter(lowerBoundaries,
needEmptyFile(request));
initMultiWriter(writer, scanner, fd, shouldDropBehind);
return writer;
}
}, throughputController, user);
}
@Override
protected List<Path> commitWriter(DateTieredMultiFileWriter writer, FileDetails fd,
CompactionRequest request) throws IOException {
return writer.commitWriters(fd.maxSeqId, request.isAllFiles());
}
}