org.apache.cassandra.db.compaction
Class AbstractCompactionTask

java.lang.Object
  org.apache.cassandra.db.compaction.AbstractCompactionTask

Direct Known Subclasses:

CompactionTask

public abstract class AbstractCompactionTask
extends java.lang.Object

Field Summary

protected ColumnFamilyStore	cfs
protected java.util.Collection<SSTableReader>	sstables

Constructor Summary

AbstractCompactionTask(ColumnFamilyStore cfs, java.util.Collection<SSTableReader> sstables)

Method Summary

protected void	cancel()
abstract int	execute(CompactionManager.CompactionExecutorStatsCollector collector)
ColumnFamilyStore	getColumnFamilyStore()
java.util.Collection<SSTableReader>	getSSTables()
boolean	markSSTablesForCompaction() Try to mark the sstable to compact as compacting.
boolean	markSSTablesForCompaction(int min, int max)
void	unmarkSSTables()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

cfs

protected ColumnFamilyStore cfs

sstables

protected java.util.Collection<SSTableReader> sstables

Constructor Detail

AbstractCompactionTask

public AbstractCompactionTask(ColumnFamilyStore cfs,
                              java.util.Collection<SSTableReader> sstables)

Method Detail

execute

public abstract int execute(CompactionManager.CompactionExecutorStatsCollector collector)
                     throws java.io.IOException

Throws:

java.io.IOException

getColumnFamilyStore

public ColumnFamilyStore getColumnFamilyStore()

getSSTables

public java.util.Collection<SSTableReader> getSSTables()

markSSTablesForCompaction

public boolean markSSTablesForCompaction()

Try to mark the sstable to compact as compacting. It returns true if some sstables have been marked for compaction, false otherwise. This *must* be called before calling execute(). Moreover, unmarkSSTables *must* always be called after execute() if this method returns true.

markSSTablesForCompaction

public boolean markSSTablesForCompaction(int min,
                                         int max)

unmarkSSTables

public void unmarkSSTables()

cancel

protected void cancel()