org.apache.cassandra.db.compaction

Class CompactionTask

java.lang.Object

org.apache.cassandra.utils.WrappedRunnable

org.apache.cassandra.db.compaction.AbstractCompactionTask

org.apache.cassandra.db.compaction.CompactionTask

All Implemented Interfaces:

java.lang.Runnable

Direct Known Subclasses:

LeveledCompactionTask, SSTableSplitter.SplittingCompactionTask

public class CompactionTask
extends AbstractCompactionTask

Field Summary

Fields

Modifier and Type	Field and Description
protected int	gcBefore
protected boolean	keepOriginals
protected static org.slf4j.Logger	logger
protected boolean	offline
protected static long	totalBytesCompacted

Fields inherited from class org.apache.cassandra.db.compaction.AbstractCompactionTask

cfs, compactionType, isUserDefined, transaction

Constructor Summary

Constructors

Constructor and Description
CompactionTask(ColumnFamilyStore cfs, LifecycleTransaction txn, int gcBefore)
CompactionTask(ColumnFamilyStore cfs, LifecycleTransaction txn, int gcBefore, boolean offline, boolean keepOriginals)

Method Summary

Modifier and Type	Method and Description
static long	addToTotalBytesCompacted(long bytesCompacted)
protected void	checkAvailableDiskSpace(long estimatedSSTables, long expectedWriteSize)
protected int	executeInternal(CompactionManager.CompactionExecutorStatsCollector collector)
CompactionAwareWriter	getCompactionAwareWriter(ColumnFamilyStore cfs, Directories directories, LifecycleTransaction transaction, java.util.Set<SSTableReader> nonExpiredSSTables)
protected CompactionController	getCompactionController(java.util.Set<SSTableReader> toCompact)
protected Directories	getDirectories()
protected int	getLevel()
static long	getMaxDataAge(java.util.Collection<SSTableReader> sstables)
static long	getMinRepairedAt(java.util.Set<SSTableReader> actuallyCompact)
protected boolean	partialCompactionsAcceptable()
boolean	reduceScopeForLimitedSpace()
protected void	runMayThrow() For internal use and testing only.
static java.lang.String	updateCompactionHistory(java.lang.String keyspaceName, java.lang.String columnFamilyName, long[] mergedRowCounts, long startSize, long endSize)

Methods inherited from class org.apache.cassandra.db.compaction.AbstractCompactionTask

execute, setCompactionType, setUserDefined, toString

Methods inherited from class org.apache.cassandra.utils.WrappedRunnable

run

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected static final org.slf4j.Logger logger

gcBefore

protected final int gcBefore

offline

protected final boolean offline

keepOriginals

protected final boolean keepOriginals

totalBytesCompacted

protected static long totalBytesCompacted

Constructor Detail

CompactionTask

public CompactionTask(ColumnFamilyStore cfs,
                      LifecycleTransaction txn,
                      int gcBefore)

CompactionTask

public CompactionTask(ColumnFamilyStore cfs,
                      LifecycleTransaction txn,
                      int gcBefore,
                      boolean offline,
                      boolean keepOriginals)

Method Detail

addToTotalBytesCompacted

public static long addToTotalBytesCompacted(long bytesCompacted)

executeInternal

protected int executeInternal(CompactionManager.CompactionExecutorStatsCollector collector)

Specified by:

executeInternal in class AbstractCompactionTask

reduceScopeForLimitedSpace

public boolean reduceScopeForLimitedSpace()

runMayThrow

protected void runMayThrow()
                    throws java.lang.Exception

For internal use and testing only. The rest of the system should go through the submit* methods, which are properly serialized. Caller is in charge of marking/unmarking the sstables as compacting.

Specified by:

runMayThrow in class WrappedRunnable

Throws:

java.lang.Exception

getCompactionAwareWriter

public CompactionAwareWriter getCompactionAwareWriter(ColumnFamilyStore cfs,
                                                      Directories directories,
                                                      LifecycleTransaction transaction,
                                                      java.util.Set<SSTableReader> nonExpiredSSTables)

Specified by:

getCompactionAwareWriter in class AbstractCompactionTask

updateCompactionHistory

public static java.lang.String updateCompactionHistory(java.lang.String keyspaceName,
                                                       java.lang.String columnFamilyName,
                                                       long[] mergedRowCounts,
                                                       long startSize,
                                                       long endSize)

getDirectories

protected Directories getDirectories()

getMinRepairedAt

public static long getMinRepairedAt(java.util.Set<SSTableReader> actuallyCompact)

checkAvailableDiskSpace

protected void checkAvailableDiskSpace(long estimatedSSTables,
                                       long expectedWriteSize)

getLevel

protected int getLevel()

getCompactionController

protected CompactionController getCompactionController(java.util.Set<SSTableReader> toCompact)

partialCompactionsAcceptable

protected boolean partialCompactionsAcceptable()

getMaxDataAge

public static long getMaxDataAge(java.util.Collection<SSTableReader> sstables)