| /* |
| * 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; |
| |
| import java.util.*; |
| |
| import org.apache.cassandra.db.*; |
| import org.apache.cassandra.db.compaction.writers.CompactionAwareWriter; |
| import org.apache.cassandra.db.compaction.writers.MaxSSTableSizeWriter; |
| import org.apache.cassandra.io.sstable.format.SSTableReader; |
| import org.apache.cassandra.db.lifecycle.LifecycleTransaction; |
| |
| public class SSTableSplitter { |
| |
| private final SplittingCompactionTask task; |
| |
| private CompactionInfo.Holder info; |
| |
| public SSTableSplitter(ColumnFamilyStore cfs, LifecycleTransaction transaction, int sstableSizeInMB) |
| { |
| this.task = new SplittingCompactionTask(cfs, transaction, sstableSizeInMB); |
| } |
| |
| public void split() |
| { |
| task.execute(new StatsCollector()); |
| } |
| |
| public class StatsCollector implements CompactionManager.CompactionExecutorStatsCollector |
| { |
| public void beginCompaction(CompactionInfo.Holder ci) |
| { |
| SSTableSplitter.this.info = ci; |
| } |
| |
| public void finishCompaction(CompactionInfo.Holder ci) |
| { |
| // no-op |
| } |
| } |
| |
| public static class SplittingCompactionTask extends CompactionTask |
| { |
| private final int sstableSizeInMB; |
| |
| public SplittingCompactionTask(ColumnFamilyStore cfs, LifecycleTransaction transaction, int sstableSizeInMB) |
| { |
| super(cfs, transaction, CompactionManager.NO_GC, false); |
| this.sstableSizeInMB = sstableSizeInMB; |
| |
| if (sstableSizeInMB <= 0) |
| throw new IllegalArgumentException("Invalid target size for SSTables, must be > 0 (got: " + sstableSizeInMB + ")"); |
| } |
| |
| @Override |
| protected CompactionController getCompactionController(Set<SSTableReader> toCompact) |
| { |
| return new SplitController(cfs); |
| } |
| |
| @Override |
| public CompactionAwareWriter getCompactionAwareWriter(ColumnFamilyStore cfs, |
| Directories directories, |
| LifecycleTransaction txn, |
| Set<SSTableReader> nonExpiredSSTables) |
| { |
| return new MaxSSTableSizeWriter(cfs, directories, txn, nonExpiredSSTables, sstableSizeInMB * 1024L * 1024L, 0, false); |
| } |
| |
| @Override |
| protected boolean partialCompactionsAcceptable() |
| { |
| return true; |
| } |
| } |
| |
| public static class SplitController extends CompactionController |
| { |
| public SplitController(ColumnFamilyStore cfs) |
| { |
| super(cfs, CompactionManager.NO_GC); |
| } |
| |
| @Override |
| public long maxPurgeableTimestamp(DecoratedKey key) |
| { |
| return Long.MIN_VALUE; |
| } |
| } |
| } |