org.apache.cassandra.db.lifecycle

Class Tracker

java.lang.Object

org.apache.cassandra.db.lifecycle.Tracker

public class Tracker
extends java.lang.Object

Tracker tracks live View of data store for a table.

Field Summary

Fields

Modifier and Type	Field and Description
ColumnFamilyStore	cfstore
boolean	loadsstables

Constructor Summary

Constructors

Constructor and Description
Tracker(Memtable memtable, boolean loadsstables)

Method Summary

Modifier and Type	Method and Description
void	addInitialSSTables(java.lang.Iterable<SSTableReader> sstables)
void	addSSTables(java.lang.Iterable<SSTableReader> sstables)
void	dropSSTables()
java.lang.Throwable	dropSSTables(com.google.common.base.Predicate<SSTableReader> remove, OperationType operationType, java.lang.Throwable accumulate) removes all sstables that are not busy compacting.
java.lang.Throwable	dropSSTables(java.lang.Throwable accumulate)
java.lang.Throwable	dropSSTablesIfInvalid(java.lang.Throwable accumulate)
java.util.Set<SSTableReader>	getCompacting()
Memtable	getMemtableFor(OpOrder.Group opGroup, ReplayPosition replayPosition) get the Memtable that the ordered writeOp should be directed to
java.lang.Iterable<SSTableReader>	getPermittedToCompact()
java.util.Set<SSTableReader>	getSSTables()
java.util.Set<SSTableReader>	getUncompacting()
java.lang.Iterable<SSTableReader>	getUncompacting(java.lang.Iterable<SSTableReader> candidates)
View	getView()
boolean	isDummy()
void	markFlushing(Memtable memtable)
void	maybeIncrementallyBackup(SSTableReader sstable)
void	notifyAdded(SSTableReader added)
void	notifyDeleting(SSTableReader deleting)
void	notifyRenewed(Memtable renewed)
void	notifySSTableRepairedStatusChanged(java.util.Collection<SSTableReader> repairStatusesChanged)
void	notifyTruncated(long truncatedAt)
void	permitCompactionOfFlushed(SSTableReader sstable) permit compaction of the provided sstable; this translates to notifying compaction strategies of its existence, and potentially submitting a background task
void	removeUnreadableSSTables(java.io.File directory) Removes every SSTable in the directory from the Tracker's view.
void	replaceFlushed(Memtable memtable, SSTableReader sstable)
void	reset(Memtable memtable) (Re)initializes the tracker, purging all references.
void	subscribe(INotificationConsumer consumer)
Memtable	switchMemtable(boolean truncating, Memtable newMemtable) Switch the current memtable.
LifecycleTransaction	tryModify(java.lang.Iterable<SSTableReader> sstables, OperationType operationType)
LifecycleTransaction	tryModify(SSTableReader sstable, OperationType operationType)
void	unsubscribe(INotificationConsumer consumer)

Methods inherited from class java.lang.Object

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

Field Detail

cfstore

public final ColumnFamilyStore cfstore

loadsstables

public final boolean loadsstables

Constructor Detail

Tracker

public Tracker(Memtable memtable,
               boolean loadsstables)

Parameters:

memtable - Initial Memtable. Can be null.

loadsstables - true to indicate to load SSTables (TODO: remove as this is only accessed from 2i)

Method Detail

tryModify

public LifecycleTransaction tryModify(SSTableReader sstable,
                                      OperationType operationType)

tryModify

public LifecycleTransaction tryModify(java.lang.Iterable<SSTableReader> sstables,
                                      OperationType operationType)

Returns:

a Transaction over the provided sstables if we are able to mark the given @param sstables as compacted, before anyone else

addInitialSSTables

public void addInitialSSTables(java.lang.Iterable<SSTableReader> sstables)

addSSTables

public void addSSTables(java.lang.Iterable<SSTableReader> sstables)

reset

public void reset(Memtable memtable)

(Re)initializes the tracker, purging all references.

dropSSTablesIfInvalid

public java.lang.Throwable dropSSTablesIfInvalid(java.lang.Throwable accumulate)

dropSSTables

public void dropSSTables()

dropSSTables

public java.lang.Throwable dropSSTables(java.lang.Throwable accumulate)

dropSSTables

public java.lang.Throwable dropSSTables(com.google.common.base.Predicate<SSTableReader> remove,
                                        OperationType operationType,
                                        java.lang.Throwable accumulate)

removes all sstables that are not busy compacting.

removeUnreadableSSTables

public void removeUnreadableSSTables(java.io.File directory)

Removes every SSTable in the directory from the Tracker's view.

Parameters:

directory - the unreadable directory, possibly with SSTables in it, but not necessarily.

getMemtableFor

public Memtable getMemtableFor(OpOrder.Group opGroup,
                               ReplayPosition replayPosition)

get the Memtable that the ordered writeOp should be directed to

switchMemtable

public Memtable switchMemtable(boolean truncating,
                               Memtable newMemtable)

Switch the current memtable. This atomically appends a new memtable to the end of the list of active memtables, returning the previously last memtable. It leaves the previous Memtable in the list of live memtables until discarding(memtable) is called. These two methods must be synchronized/paired, i.e. m = switchMemtable must be followed by discarding(m), they cannot be interleaved.

Returns:

the previously active memtable

markFlushing

public void markFlushing(Memtable memtable)

replaceFlushed

public void replaceFlushed(Memtable memtable,
                           SSTableReader sstable)

permitCompactionOfFlushed

public void permitCompactionOfFlushed(SSTableReader sstable)

permit compaction of the provided sstable; this translates to notifying compaction strategies of its existence, and potentially submitting a background task

getSSTables

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

getPermittedToCompact

public java.lang.Iterable<SSTableReader> getPermittedToCompact()

getCompacting

public java.util.Set<SSTableReader> getCompacting()

getUncompacting

public java.util.Set<SSTableReader> getUncompacting()

getUncompacting

public java.lang.Iterable<SSTableReader> getUncompacting(java.lang.Iterable<SSTableReader> candidates)

maybeIncrementallyBackup

public void maybeIncrementallyBackup(SSTableReader sstable)

notifyAdded

public void notifyAdded(SSTableReader added)

notifySSTableRepairedStatusChanged

public void notifySSTableRepairedStatusChanged(java.util.Collection<SSTableReader> repairStatusesChanged)

notifyDeleting

public void notifyDeleting(SSTableReader deleting)

notifyRenewed

public void notifyRenewed(Memtable renewed)

notifyTruncated

public void notifyTruncated(long truncatedAt)

isDummy

public boolean isDummy()

subscribe

public void subscribe(INotificationConsumer consumer)

unsubscribe

public void unsubscribe(INotificationConsumer consumer)

getView

public View getView()