org.apache.ignite.internal.processors.query.h2

Class DurableBackgroundCleanupIndexTreeTaskV2

java.lang.Object

org.apache.ignite.internal.dto.IgniteDataTransferObject

org.apache.ignite.internal.processors.query.h2.DurableBackgroundCleanupIndexTreeTaskV2

All Implemented Interfaces:

Externalizable, Serializable, DurableBackgroundTask<Long>

public class DurableBackgroundCleanupIndexTreeTaskV2
extends IgniteDataTransferObject
implements DurableBackgroundTask<Long>

Task for background cleaning of index trees.

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	DurableBackgroundCleanupIndexTreeTaskV2.H2TreeFactory Factory for creating index trees.

Field Summary

Fields

Modifier and Type	Field and Description
static DurableBackgroundCleanupIndexTreeTaskV2.H2TreeFactory	idxTreeFactory Index tree index factory.

Fields inherited from class org.apache.ignite.internal.dto.IgniteDataTransferObject

V1, V10, V11, V12, V13, V14, V2, V3, V4, V5, V6, V7, V8, V9

Constructor Summary

Constructors

Constructor and Description
DurableBackgroundCleanupIndexTreeTaskV2() Default constructor for Externalizable.
DurableBackgroundCleanupIndexTreeTaskV2(@Nullable String grpName, String cacheName, String idxName, String oldTreeName, String newTreeName, int segments, @Nullable H2Tree[] trees) Constructor.

Method Summary

Modifier and Type	Method and Description
String	cacheName()
void	cancel()
static long	destroyIndexTrees(CacheGroupContext grpCtx, RootPage rootPage, String cacheName, String treeName, String idxName, int segment) Destroying index trees.
IgniteInternalFuture<DurableBackgroundTaskResult<Long>>	executeAsync(GridKernalContext ctx)
static Map<Integer,RootPage>	findIndexRootPages(CacheGroupContext grpCtx, String cacheName, String treeName, int segments) Finding the root pages of the index.
String	idxName()
String	name()
boolean	needToRename()
protected void	readExternalData(byte protoVer, ObjectInput in)
static void	renameIndexRootPages(CacheGroupContext grpCtx, String cacheName, String oldTreeName, String newTreeName, int segments) Renaming the root index pages.
void	renameIndexTrees(CacheGroupContext grpCtx) Renames index's trees.
static Map<Integer,RootPage>	toRootPages(H2Tree[] trees) Create index root pages based on its trees.
String	toString()
protected void	writeExternalData(ObjectOutput out)

Methods inherited from class org.apache.ignite.internal.dto.IgniteDataTransferObject

getProtocolVersion, readExternal, toList, toSet, writeExternal

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.ignite.internal.processors.cache.persistence.metastorage.pendingtask.DurableBackgroundTask

convertAfterRestoreIfNeeded

Field Detail

idxTreeFactory

public static DurableBackgroundCleanupIndexTreeTaskV2.H2TreeFactory idxTreeFactory

Index tree index factory. NOTE: Change only in tests, to control the creation of trees in the task.

Constructor Detail

DurableBackgroundCleanupIndexTreeTaskV2

public DurableBackgroundCleanupIndexTreeTaskV2(@Nullable
                                               @Nullable String grpName,
                                               String cacheName,
                                               String idxName,
                                               String oldTreeName,
                                               String newTreeName,
                                               int segments,
                                               @Nullable
                                               @Nullable H2Tree[] trees)

Constructor.

Parameters:

grpName - Cache group name.

cacheName - Cache name.

idxName - Index name.

oldTreeName - Old name of underlying index tree name.

newTreeName - New name of underlying index tree name.

segments - Number of segments.

trees - Index trees.

DurableBackgroundCleanupIndexTreeTaskV2

public DurableBackgroundCleanupIndexTreeTaskV2()

Default constructor for Externalizable.

Method Detail

writeExternalData

protected void writeExternalData(ObjectOutput out)
                          throws IOException

Specified by:

writeExternalData in class IgniteDataTransferObject

Throws:

IOException

readExternalData

protected void readExternalData(byte protoVer,
                                ObjectInput in)
                         throws IOException,
                                ClassNotFoundException

Specified by:

readExternalData in class IgniteDataTransferObject

Throws:

IOException

ClassNotFoundException

name

public String name()

Specified by:

name in interface DurableBackgroundTask<Long>

cancel

public void cancel()

Specified by:

cancel in interface DurableBackgroundTask<Long>

executeAsync

public IgniteInternalFuture<DurableBackgroundTaskResult<Long>> executeAsync(GridKernalContext ctx)

Specified by:

executeAsync in interface DurableBackgroundTask<Long>

renameIndexTrees

public void renameIndexTrees(CacheGroupContext grpCtx)
                      throws IgniteCheckedException

Renames index's trees. Synchronized because can be called in parallel by this task and by the H2TreeIndex.destroy0(boolean, boolean).

Parameters:

grpCtx - Cache group context.

Throws:

IgniteCheckedException - If failed to rename index's trees.

destroyIndexTrees

public static long destroyIndexTrees(CacheGroupContext grpCtx,
                                     RootPage rootPage,
                                     String cacheName,
                                     String treeName,
                                     String idxName,
                                     int segment)
                              throws IgniteCheckedException

Destroying index trees.

Parameters:

grpCtx - Cache group context.

rootPage - Index root page.

cacheName - Cache name.

treeName - Name of underlying index tree name.

idxName - Index name.

segment - Segment number.

Returns:

Total number of pages recycled from this tree.

Throws:

IgniteCheckedException - If failed.

findIndexRootPages

public static Map<Integer,RootPage> findIndexRootPages(CacheGroupContext grpCtx,
                                                       String cacheName,
                                                       String treeName,
                                                       int segments)
                                                throws IgniteCheckedException

Finding the root pages of the index.

Parameters:

grpCtx - Cache group context.

cacheName - Cache name.

treeName - Name of underlying index tree name.

segments - Number of segments.

Returns:

Index root pages. Mapping: segment number -> index root page.

Throws:

IgniteCheckedException - If failed.

renameIndexRootPages

public static void renameIndexRootPages(CacheGroupContext grpCtx,
                                        String cacheName,
                                        String oldTreeName,
                                        String newTreeName,
                                        int segments)
                                 throws IgniteCheckedException

Renaming the root index pages.

Parameters:

grpCtx - Cache group context.

cacheName - Cache name.

oldTreeName - Old name of underlying index tree name.

newTreeName - New name of underlying index tree name.

segments - Number of segments.

Throws:

IgniteCheckedException - If failed.

toRootPages

public static Map<Integer,RootPage> toRootPages(H2Tree[] trees)

Create index root pages based on its trees.

Parameters:

trees - Index trees.

Returns:

Index root pages. Mapping: segment number -> index root page.

cacheName

public String cacheName()

Returns:

Cache name.

idxName

public String idxName()

Returns:

Index name.

needToRename

public boolean needToRename()

Returns:

true if needs to rename index trees, false otherwise.

toString

public String toString()

Overrides:

toString in class Object