| /* |
| * 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.cassandra.db.compaction.writers; |
| |
| |
| import java.util.Set; |
| |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import org.apache.cassandra.db.ColumnFamilyStore; |
| import org.apache.cassandra.db.Directories; |
| import org.apache.cassandra.db.SerializationHeader; |
| import org.apache.cassandra.db.rows.UnfilteredRowIterator; |
| import org.apache.cassandra.db.lifecycle.LifecycleTransaction; |
| import org.apache.cassandra.io.sstable.Descriptor; |
| import org.apache.cassandra.io.sstable.format.SSTableReader; |
| import org.apache.cassandra.io.sstable.format.SSTableWriter; |
| import org.apache.cassandra.io.sstable.metadata.MetadataCollector; |
| |
| /** |
| * The default compaction writer - creates one output file in L0 |
| */ |
| public class DefaultCompactionWriter extends CompactionAwareWriter |
| { |
| protected static final Logger logger = LoggerFactory.getLogger(DefaultCompactionWriter.class); |
| |
| public DefaultCompactionWriter(ColumnFamilyStore cfs, Directories directories, LifecycleTransaction txn, Set<SSTableReader> nonExpiredSSTables) |
| { |
| this(cfs, directories, txn, nonExpiredSSTables, false, false); |
| } |
| |
| @SuppressWarnings("resource") |
| public DefaultCompactionWriter(ColumnFamilyStore cfs, Directories directories, LifecycleTransaction txn, Set<SSTableReader> nonExpiredSSTables, boolean offline, boolean keepOriginals) |
| { |
| super(cfs, directories, txn, nonExpiredSSTables, offline, keepOriginals); |
| } |
| |
| @Override |
| public boolean realAppend(UnfilteredRowIterator partition) |
| { |
| return sstableWriter.append(partition) != null; |
| } |
| |
| @Override |
| protected void switchCompactionLocation(Directories.DataDirectory directory) |
| { |
| @SuppressWarnings("resource") |
| SSTableWriter writer = SSTableWriter.create(Descriptor.fromFilename(cfs.getSSTablePath(getDirectories().getLocationForDisk(directory))), |
| estimatedTotalKeys, |
| minRepairedAt, |
| cfs.metadata, |
| new MetadataCollector(txn.originals(), cfs.metadata.comparator, 0), |
| SerializationHeader.make(cfs.metadata, nonExpiredSSTables), |
| txn); |
| sstableWriter.switchWriter(writer); |
| } |
| |
| @Override |
| public long estimatedKeys() |
| { |
| return estimatedTotalKeys; |
| } |
| } |