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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.regionserver.compactions;
import java.io.IOException;
import java.util.List;
import java.util.OptionalLong;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.regionserver.DateTieredMultiFileWriter;
import org.apache.hadoop.hbase.regionserver.HStore;
import org.apache.hadoop.hbase.regionserver.InternalScanner;
import org.apache.hadoop.hbase.regionserver.StoreUtils;
import org.apache.hadoop.hbase.regionserver.throttle.ThroughputController;
import org.apache.hadoop.hbase.security.User;
import org.apache.yetus.audience.InterfaceAudience;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* This compactor will generate StoreFile for different time ranges.
*/
@InterfaceAudience.Private
public class DateTieredCompactor extends AbstractMultiOutputCompactor {
private static final Logger LOG = LoggerFactory.getLogger(DateTieredCompactor.class);
public DateTieredCompactor(Configuration conf, HStore store) {
super(conf, store);
}
private boolean needEmptyFile(CompactionRequestImpl 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.
OptionalLong maxSeqId = StoreUtils.getMaxSequenceIdInList(request.getFiles());
OptionalLong storeMaxSeqId = store.getMaxSequenceId();
return maxSeqId.isPresent() && storeMaxSeqId.isPresent() &&
maxSeqId.getAsLong() == storeMaxSeqId.getAsLong();
}
public List compact(final CompactionRequestImpl request, final List 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() {
@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 commitWriter(DateTieredMultiFileWriter writer, FileDetails fd,
CompactionRequestImpl request) throws IOException {
return writer.commitWriters(fd.maxSeqId, request.isAllFiles(), request.getFiles());
}
}