org.apache.ignite.internal.processors.cache.distributed.dht.preloader

Class GridDhtPreloader

java.lang.Object

org.apache.ignite.internal.processors.cache.GridCachePreloaderAdapter

org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPreloader

All Implemented Interfaces:

GridCachePreloader

public class GridDhtPreloader
extends GridCachePreloaderAdapter

DHT cache preloader.

Field Summary

Fields

Modifier and Type	Field and Description
static long	DFLT_PRELOAD_RESEND_TIMEOUT Default preload resend timeout.
static IgniteProductVersion	REBALANCING_VER_2_SINCE Rebalancing was refactored at version 1.5.0, but backward compatibility to previous implementation was saved.

Fields inherited from class org.apache.ignite.internal.processors.cache.GridCachePreloaderAdapter

aff, cctx, log, preloadPred

Constructor Summary

Constructors

Constructor and Description
GridDhtPreloader(GridCacheContext<?,?> cctx)

Method Summary

Methods

Modifier and Type	Method and Description
Runnable	addAssignments(GridDhtPreloaderAssignments assignments, boolean forceRebalance, int cnt, Runnable next, GridFutureAdapter<Boolean> forcedRebFut) Adds assignments to preloader.
GridDhtPreloaderAssignments	assign(GridDhtPartitionsExchangeFuture exchFut)
void	dumpDebugInfo() Dumps debug information.
void	evictPartitionAsync(GridDhtLocalPartition part) Evicts partition asynchronously.
IgniteInternalFuture<Boolean>	forceRebalance() Force Rebalance process.
void	handleDemandMessage(int idx, UUID id, GridDhtPartitionDemandMessage d) Handles Demand message.
void	handleSupplyMessage(int idx, UUID id, GridDhtPartitionSupplyMessageV2 s) Handles Supply message.
boolean	needForceKeys()
void	onInitialExchangeComplete(Throwable err) Callback by exchange manager when initial partition exchange is complete.
void	onKernalStop() Kernal stop callback.
void	onPartitionEvicted(GridDhtLocalPartition part, boolean updateSeq) Resends partitions on partition evict within configured timeout.
void	onReconnected() Client reconnected callback.
void	onTopologyChanged(GridDhtPartitionsExchangeFuture lastFut)
void	preloadPredicate(IgnitePredicate<GridCacheEntryInfo> preloadPred)
IgniteInternalFuture<Boolean>	rebalanceFuture()
GridDhtFuture<Object>	request(Collection<KeyCacheObject> keys, AffinityTopologyVersion topVer) Requests that preloader sends the request for the key.
IgniteInternalFuture<Object>	request(GridNearAtomicAbstractUpdateRequest req, AffinityTopologyVersion topVer) Requests that preloader sends the request for the key.
void	start() Starts preloading.
IgniteInternalFuture<Object>	startFuture()
IgniteInternalFuture<?>	syncFuture()
void	unwindUndeploys() Unwinds undeploys.

Methods inherited from class org.apache.ignite.internal.processors.cache.GridCachePreloaderAdapter

onKernalStart, preloadPredicate, stop

Methods inherited from class java.lang.Object

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

Field Detail

REBALANCING_VER_2_SINCE

public static final IgniteProductVersion REBALANCING_VER_2_SINCE

Rebalancing was refactored at version 1.5.0, but backward compatibility to previous implementation was saved. Node automatically chose communication protocol depends on remote node's version. Backward compatibility may be removed at Ignite 2.x.

DFLT_PRELOAD_RESEND_TIMEOUT

public static final long DFLT_PRELOAD_RESEND_TIMEOUT

Default preload resend timeout.

See Also:

Constant Field Values

Constructor Detail

GridDhtPreloader

public GridDhtPreloader(GridCacheContext<?,?> cctx)

Parameters:

cctx - Cache context.

Method Detail

start

public void start()

Starts preloading.

Specified by:

start in interface GridCachePreloader

Overrides:

start in class GridCachePreloaderAdapter

preloadPredicate

public void preloadPredicate(IgnitePredicate<GridCacheEntryInfo> preloadPred)

Specified by:

preloadPredicate in interface GridCachePreloader

Overrides:

preloadPredicate in class GridCachePreloaderAdapter

Parameters:

preloadPred - Preload predicate.

onKernalStop

public void onKernalStop()

Kernal stop callback.

Specified by:

onKernalStop in interface GridCachePreloader

Overrides:

onKernalStop in class GridCachePreloaderAdapter

onInitialExchangeComplete

public void onInitialExchangeComplete(@Nullable
                             Throwable err)

Callback by exchange manager when initial partition exchange is complete.

Specified by:

onInitialExchangeComplete in interface GridCachePreloader

Overrides:

onInitialExchangeComplete in class GridCachePreloaderAdapter

Parameters:

err - Error, if any happened on initial exchange.

onTopologyChanged

public void onTopologyChanged(GridDhtPartitionsExchangeFuture lastFut)

Specified by:

onTopologyChanged in interface GridCachePreloader

Overrides:

onTopologyChanged in class GridCachePreloaderAdapter

Parameters:

lastFut - Last future.

assign

public GridDhtPreloaderAssignments assign(GridDhtPartitionsExchangeFuture exchFut)

Specified by:

assign in interface GridCachePreloader

Overrides:

assign in class GridCachePreloaderAdapter

Parameters:

exchFut - Exchange future to assign.

Returns:

Assignments or null if detected that there are pending exchanges.

onReconnected

public void onReconnected()

Client reconnected callback.

Specified by:

onReconnected in interface GridCachePreloader

Overrides:

onReconnected in class GridCachePreloaderAdapter

handleSupplyMessage

public void handleSupplyMessage(int idx,
                       UUID id,
                       GridDhtPartitionSupplyMessageV2 s)

Handles Supply message.

Specified by:

handleSupplyMessage in interface GridCachePreloader

Overrides:

handleSupplyMessage in class GridCachePreloaderAdapter

Parameters:

idx - Index.

id - Node Id.

s - Supply message.

handleDemandMessage

public void handleDemandMessage(int idx,
                       UUID id,
                       GridDhtPartitionDemandMessage d)

Handles Demand message.

Specified by:

handleDemandMessage in interface GridCachePreloader

Overrides:

handleDemandMessage in class GridCachePreloaderAdapter

Parameters:

idx - Index.

id - Node Id.

d - Demand message.

addAssignments

public Runnable addAssignments(GridDhtPreloaderAssignments assignments,
                      boolean forceRebalance,
                      int cnt,
                      Runnable next,
                      @Nullable
                      GridFutureAdapter<Boolean> forcedRebFut)

Adds assignments to preloader.

Specified by:

addAssignments in interface GridCachePreloader

Overrides:

addAssignments in class GridCachePreloaderAdapter

Parameters:

assignments - Assignments to add.

forceRebalance - Force preload flag.

cnt - Counter.

next - Runnable responsible for cache rebalancing start.

Returns:

Rebalancing runnable.

startFuture

public IgniteInternalFuture<Object> startFuture()

Description copied from class: GridCachePreloaderAdapter

Specified by:

startFuture in interface GridCachePreloader

Overrides:

startFuture in class GridCachePreloaderAdapter

Returns:

Start future.

syncFuture

public IgniteInternalFuture<?> syncFuture()

Specified by:

syncFuture in interface GridCachePreloader

Overrides:

syncFuture in class GridCachePreloaderAdapter

Returns:

Future which will complete when preloading is finished.

rebalanceFuture

public IgniteInternalFuture<Boolean> rebalanceFuture()

Specified by:

rebalanceFuture in interface GridCachePreloader

Overrides:

rebalanceFuture in class GridCachePreloaderAdapter

Returns:

Future which will complete when preloading finishes on current topology. Future result is true in case rebalancing successfully finished at current topology. Future result is false in case rebalancing cancelled or finished with missed partitions and will be restarted at current or pending topology. Note that topology change creates new futures and finishes previous.

onPartitionEvicted

public void onPartitionEvicted(GridDhtLocalPartition part,
                      boolean updateSeq)

Resends partitions on partition evict within configured timeout.

Parameters:

part - Evicted partition.

updateSeq - Update sequence.

needForceKeys

public boolean needForceKeys()

Specified by:

needForceKeys in interface GridCachePreloader

Overrides:

needForceKeys in class GridCachePreloaderAdapter

Returns:

true if there is no need to force keys preloading (e.g. rebalancing has been completed).

request

public IgniteInternalFuture<Object> request(GridNearAtomicAbstractUpdateRequest req,
                                   AffinityTopologyVersion topVer)

Requests that preloader sends the request for the key.

Specified by:

request in interface GridCachePreloader

Overrides:

request in class GridCachePreloaderAdapter

Parameters:

req - Message with keys to request.

topVer - Topology version, -1 if not required.

Returns:

Future to complete when all keys are preloaded.

request

public GridDhtFuture<Object> request(Collection<KeyCacheObject> keys,
                            AffinityTopologyVersion topVer)

Description copied from class: GridCachePreloaderAdapter

Requests that preloader sends the request for the key.

Specified by:

request in interface GridCachePreloader

Overrides:

request in class GridCachePreloaderAdapter

Parameters:

keys - Keys to request.

topVer - Topology version, -1 if not required.

Returns:

Future for request.

forceRebalance

public IgniteInternalFuture<Boolean> forceRebalance()

Force Rebalance process.

Specified by:

forceRebalance in interface GridCachePreloader

Overrides:

forceRebalance in class GridCachePreloaderAdapter

unwindUndeploys

public void unwindUndeploys()

Unwinds undeploys.

Specified by:

unwindUndeploys in interface GridCachePreloader

Overrides:

unwindUndeploys in class GridCachePreloaderAdapter

evictPartitionAsync

public void evictPartitionAsync(GridDhtLocalPartition part)

Evicts partition asynchronously.

Specified by:

evictPartitionAsync in interface GridCachePreloader

Overrides:

evictPartitionAsync in class GridCachePreloaderAdapter

Parameters:

part - Partition.

dumpDebugInfo

public void dumpDebugInfo()

Dumps debug information.

Specified by:

dumpDebugInfo in interface GridCachePreloader

Overrides:

dumpDebugInfo in class GridCachePreloaderAdapter