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A fork of the Apache Cassandra Project that uses Lucene indexes for providing near real time search such as ElasticSearch or Solr, including full text search capabilities, multi-dimensional queries, and relevance scoring.
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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.cassandra.db.compaction;
import java.util.Set;
import org.apache.cassandra.db.ColumnFamilyStore;
import org.apache.cassandra.db.Directories;
import org.apache.cassandra.db.compaction.CompactionManager.CompactionExecutorStatsCollector;
import org.apache.cassandra.io.sstable.SSTableReader;
import org.apache.cassandra.io.util.DiskAwareRunnable;
public abstract class AbstractCompactionTask extends DiskAwareRunnable
{
protected final ColumnFamilyStore cfs;
protected Set sstables;
protected boolean isUserDefined;
protected OperationType compactionType;
/**
* @param cfs
* @param sstables must be marked compacting
*/
public AbstractCompactionTask(ColumnFamilyStore cfs, Set sstables)
{
this.cfs = cfs;
this.sstables = sstables;
this.isUserDefined = false;
this.compactionType = OperationType.COMPACTION;
// enforce contract that caller should mark sstables compacting
Set compacting = cfs.getDataTracker().getCompacting();
for (SSTableReader sstable : sstables)
assert compacting.contains(sstable) : sstable.getFilename() + " is not correctly marked compacting";
}
/**
* executes the task and unmarks sstables compacting
*/
public int execute(CompactionExecutorStatsCollector collector)
{
try
{
return executeInternal(collector);
}
finally
{
cfs.getDataTracker().unmarkCompacting(sstables);
}
}
protected abstract int executeInternal(CompactionExecutorStatsCollector collector);
protected Directories getDirectories()
{
return cfs.directories;
}
public AbstractCompactionTask setUserDefined(boolean isUserDefined)
{
this.isUserDefined = isUserDefined;
return this;
}
public AbstractCompactionTask setCompactionType(OperationType compactionType)
{
this.compactionType = compactionType;
return this;
}
public String toString()
{
return "CompactionTask(" + sstables + ")";
}
}