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

Interface GridDhtPartitionTopology

All Known Implementing Classes:

GridClientPartitionTopology

@GridToStringExclude
public interface GridDhtPartitionTopology

DHT partition topology.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	afterExchange(GridDhtPartitionsExchangeFuture exchFut) Post-initializes this topology.
void	beforeExchange(GridDhtPartitionsExchangeFuture exchFut, boolean affReady) Pre-initializes this topology.
int	cacheId()
void	checkEvictions()
Iterable<GridDhtLocalPartition>	currentLocalPartitions()
boolean	detectLostPartitions(DiscoveryEvent discoEvt) Checks if there is at least one owner for each partition in the cache topology.
boolean	hasMovingPartitions()
void	initPartitions(GridDhtPartitionsExchangeFuture exchFut)
GridDhtLocalPartition	localPartition(int p, AffinityTopologyVersion topVer, boolean create)
GridDhtLocalPartition	localPartition(Object key, boolean create)
GridDhtPartitionMap	localPartitionMap()
List<GridDhtLocalPartition>	localPartitions()
Collection<Integer>	lostPartitions()
List<ClusterNode>	moving(int p)
List<ClusterNode>	nodes(int p, AffinityAssignment affAssignment, List<ClusterNode> affNodes)
List<ClusterNode>	nodes(int p, AffinityTopologyVersion topVer)
void	onEvicted(GridDhtLocalPartition part, boolean updateSeq)
void	onRemoved(GridDhtCacheEntry e)
boolean	own(GridDhtLocalPartition part)
List<ClusterNode>	owners(int p)
List<ClusterNode>	owners(int p, AffinityTopologyVersion topVer)
GridDhtPartitionFullMap	partitionMap(boolean onlyActive)
GridDhtPartitionMap	partitions(UUID nodeId)
GridDhtPartitionState	partitionState(UUID nodeId, int part)
void	printMemoryStats(int threshold) Prints memory stats.
void	readLock() Locks the topology, usually during mapping on locks or transactions.
void	readUnlock() Unlocks topology locked by readLock() method.
boolean	rebalanceFinished(AffinityTopologyVersion topVer)
void	releasePartitions(int... parts)
void	resetLostPartitions() Resets the state of all LOST partitions to OWNING.
void	setOwners(int p, Set<UUID> owners, boolean updateSeq) Make nodes from provided set owners for a given partition.
boolean	stopping()
AffinityTopologyVersion	topologyVersion() Topology version.
GridDhtTopologyFuture	topologyVersionFuture() Gets a future that will be completed when partition exchange map for this particular topology version is done.
GridDhtPartitionMap	update(GridDhtPartitionExchangeId exchId, GridDhtPartitionFullMap partMap, Map<Integer,T2<Long,Long>> cntrMap)
GridDhtPartitionMap	update(GridDhtPartitionExchangeId exchId, GridDhtPartitionMap parts, Map<Integer,T2<Long,Long>> cntrMap)
Map<Integer,T2<Long,Long>>	updateCounters(boolean skipZeros)
long	updateSequence()
void	updateTopologyVersion(GridDhtPartitionExchangeId exchId, GridDhtPartitionsExchangeFuture exchFut, long updateSeq, boolean stopping) Updates topology version.

Method Detail

readLock

void readLock()

Locks the topology, usually during mapping on locks or transactions.

readUnlock

void readUnlock()

Unlocks topology locked by readLock() method.

updateTopologyVersion

void updateTopologyVersion(GridDhtPartitionExchangeId exchId,
                         GridDhtPartitionsExchangeFuture exchFut,
                         long updateSeq,
                         boolean stopping)
                           throws IgniteInterruptedCheckedException

Updates topology version.

Parameters:

exchId - Exchange ID.

exchFut - Exchange future.

updateSeq - Update sequence.

stopping - Stopping flag.

Throws:

IgniteInterruptedCheckedException - If interrupted.

topologyVersion

AffinityTopologyVersion topologyVersion()

Topology version.

Returns:

Topology version.

topologyVersionFuture

GridDhtTopologyFuture topologyVersionFuture()

Gets a future that will be completed when partition exchange map for this particular topology version is done.

Returns:

Topology version ready future.

stopping

boolean stopping()

Returns:

True if cache is being stopped.

cacheId

int cacheId()

Returns:

Cache ID.

beforeExchange

void beforeExchange(GridDhtPartitionsExchangeFuture exchFut,
                  boolean affReady)
                    throws IgniteCheckedException

Pre-initializes this topology.

Parameters:

exchFut - Exchange future.

affReady - Affinity ready flag.

Throws:

IgniteCheckedException - If failed.

initPartitions

void initPartitions(GridDhtPartitionsExchangeFuture exchFut)
                    throws IgniteInterruptedCheckedException

Parameters:

exchFut - Exchange future.

Throws:

IgniteInterruptedCheckedException - If interrupted.

afterExchange

boolean afterExchange(GridDhtPartitionsExchangeFuture exchFut)
                      throws IgniteCheckedException

Post-initializes this topology.

Parameters:

exchFut - Exchange future.

Returns:

True if mapping was changed.

Throws:

IgniteCheckedException - If failed.

localPartition

@Nullable
GridDhtLocalPartition localPartition(int p,
                                            AffinityTopologyVersion topVer,
                                            boolean create)
                                     throws GridDhtInvalidPartitionException

Parameters:

topVer - Topology version at the time of creation.

p - Partition ID.

create - If true, then partition will be created if it's not there.

Returns:

Local partition.

Throws:

GridDhtInvalidPartitionException - If partition is evicted or absent and does not belong to this node.

releasePartitions

void releasePartitions(int... parts)

Parameters:

parts - Partitions to release (should be reserved before).

localPartition

@Nullable
GridDhtLocalPartition localPartition(Object key,
                                            boolean create)
                                     throws GridDhtInvalidPartitionException

Parameters:

key - Cache key.

create - If true, then partition will be created if it's not there.

Returns:

Local partition.

Throws:

GridDhtInvalidPartitionException - If partition is evicted or absent and does not belong to this node.

localPartitions

List<GridDhtLocalPartition> localPartitions()

Returns:

All local partitions by copying them into another list.

currentLocalPartitions

Iterable<GridDhtLocalPartition> currentLocalPartitions()

Returns:

All current active local partitions.

localPartitionMap

GridDhtPartitionMap localPartitionMap()

Returns:

Local IDs.

partitionState

GridDhtPartitionState partitionState(UUID nodeId,
                                   int part)

Parameters:

nodeId - Node ID.

part - Partition.

Returns:

Partition state.

updateSequence

long updateSequence()

Returns:

Current update sequence.

nodes

List<ClusterNode> nodes(int p,
                      AffinityTopologyVersion topVer)

Parameters:

p - Partition ID.

topVer - Topology version.

Returns:

Collection of all nodes responsible for this partition with primary node being first.

nodes

@Nullable
List<ClusterNode> nodes(int p,
                               AffinityAssignment affAssignment,
                               List<ClusterNode> affNodes)

Parameters:

p - Partition ID.

affAssignment - Assignments.

affNodes - Node assigned for given partition by affinity.

Returns:

Collection of all nodes responsible for this partition with primary node being first.

owners

List<ClusterNode> owners(int p)

Parameters:

p - Partition ID.

Returns:

Collection of all nodes who own this partition.

owners

List<ClusterNode> owners(int p,
                       AffinityTopologyVersion topVer)

Parameters:

p - Partition ID.

topVer - Topology version.

Returns:

Collection of all nodes who own this partition.

moving

List<ClusterNode> moving(int p)

Parameters:

p - Partition ID.

Returns:

Collection of all nodes who are preloading this partition.

partitionMap

GridDhtPartitionFullMap partitionMap(boolean onlyActive)

Parameters:

onlyActive - If true, then only active partitions will be returned.

Returns:

Node IDs mapped to partitions.

hasMovingPartitions

boolean hasMovingPartitions()

Returns:

True If one of cache nodes has partitions in GridDhtPartitionState.MOVING state.

onRemoved

void onRemoved(GridDhtCacheEntry e)

Parameters:

e - Entry removed from cache.

update

GridDhtPartitionMap update(@Nullable
                         GridDhtPartitionExchangeId exchId,
                         GridDhtPartitionFullMap partMap,
                         @Nullable
                         Map<Integer,T2<Long,Long>> cntrMap)

Parameters:

exchId - Exchange ID.

partMap - Update partition map.

cntrMap - Partition update counters.

Returns:

Local partition map if there were evictions or null otherwise.

update

@Nullable
GridDhtPartitionMap update(@Nullable
                                  GridDhtPartitionExchangeId exchId,
                                  GridDhtPartitionMap parts,
                                  @Nullable
                                  Map<Integer,T2<Long,Long>> cntrMap)

Parameters:

exchId - Exchange ID.

parts - Partitions.

cntrMap - Partition update counters.

Returns:

Local partition map if there were evictions or null otherwise.

detectLostPartitions

boolean detectLostPartitions(DiscoveryEvent discoEvt)

Checks if there is at least one owner for each partition in the cache topology. If not, marks such a partition as LOST.

This method should be called on topology coordinator after all partition messages are received.

Parameters:

discoEvt - Discovery event for which we detect lost partitions.

Returns:

True if partitons state got updated.

resetLostPartitions

void resetLostPartitions()

Resets the state of all LOST partitions to OWNING.

lostPartitions

Collection<Integer> lostPartitions()

Returns:

Collection of lost partitions, if any.

checkEvictions

void checkEvictions()

updateCounters

Map<Integer,T2<Long,Long>> updateCounters(boolean skipZeros)

Parameters:

skipZeros - If true then filters out zero counters.

Returns:

Partition update counters.

own

boolean own(GridDhtLocalPartition part)

Parameters:

part - Partition to own.

Returns:

True if owned.

onEvicted

void onEvicted(GridDhtLocalPartition part,
             boolean updateSeq)

Parameters:

part - Evicted partition.

updateSeq - Update sequence increment flag.

partitions

@Nullable
GridDhtPartitionMap partitions(UUID nodeId)

Parameters:

nodeId - Node to get partitions for.

Returns:

Partitions for node.

printMemoryStats

void printMemoryStats(int threshold)

Prints memory stats.

Parameters:

threshold - Threshold for number of entries.

rebalanceFinished

boolean rebalanceFinished(AffinityTopologyVersion topVer)

Parameters:

topVer - Topology version.

Returns:

True if rebalance process finished.

setOwners

void setOwners(int p,
             Set<UUID> owners,
             boolean updateSeq)

Make nodes from provided set owners for a given partition. State of all current owners that aren't contained in the set will be reset to MOVING.

Parameters:

p - Partition ID.

updateSeq - If should increment sequence when updated.

owners - Set of new owners.