org.apache.ignite.internal.processors.affinity

Class GridAffinityAssignmentV2

java.lang.Object

org.apache.ignite.internal.dto.IgniteDataTransferObject

org.apache.ignite.internal.processors.affinity.GridAffinityAssignmentV2

All Implemented Interfaces:

Externalizable, Serializable, AffinityAssignment

public class GridAffinityAssignmentV2
extends IgniteDataTransferObject
implements AffinityAssignment

Cached affinity calculations V2. It supports adaptive usage of BitSets instead of HashSets.

See Also:

Serialized Form

Field Summary

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

V1, V2, V3, V4, V5

Fields inherited from interface org.apache.ignite.internal.processors.affinity.AffinityAssignment

IGNITE_AFFINITY_BACKUPS_THRESHOLD, IGNITE_DISABLE_AFFINITY_MEMORY_OPTIMIZATION

Constructor Summary

Constructors

Constructor and Description
GridAffinityAssignmentV2() Default constructor for deserialization.
GridAffinityAssignmentV2(AffinityTopologyVersion topVer, List<List<ClusterNode>> assignment, List<List<ClusterNode>> idealAssignment)

Method Summary

Modifier and Type	Method and Description
List<List<ClusterNode>>	assignment()
Set<Integer>	backupPartitions(UUID nodeId) Get backup partitions for specified node ID.
boolean	equals(Object o)
List<ClusterNode>	get(int part) Get affinity nodes for partition.
Collection<UUID>	getIds(int part) Get affinity node IDs for partition as unmodifiable collection.
int	hashCode()
List<List<ClusterNode>>	idealAssignment()
Set<ClusterNode>	nodes()
Set<Integer>	partitionPrimariesDifferentToIdeal()
Set<ClusterNode>	primaryPartitionNodes()
Set<Integer>	primaryPartitions(UUID nodeId) Get primary partitions for specified node ID.
protected void	readExternalData(byte protoVer, ObjectInput in) Load object's specific data content.
AffinityTopologyVersion	topologyVersion()
String	toString()
protected void	writeExternalData(ObjectOutput out) Save object's specific data content.

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

getProtocolVersion, readExternal, toList, toSet, writeExternal

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.ignite.internal.processors.affinity.AffinityAssignment

assignments2ids

Constructor Detail

GridAffinityAssignmentV2

public GridAffinityAssignmentV2()

Default constructor for deserialization.

GridAffinityAssignmentV2

public GridAffinityAssignmentV2(AffinityTopologyVersion topVer,
                                List<List<ClusterNode>> assignment,
                                List<List<ClusterNode>> idealAssignment)

Parameters:

topVer - Topology version.

assignment - Assignment.

idealAssignment - Ideal assignment.

Method Detail

idealAssignment

public List<List<ClusterNode>> idealAssignment()

Specified by:

idealAssignment in interface AffinityAssignment

Returns:

Unmodifiable ideal affinity assignment computed by affinity function.

assignment

public List<List<ClusterNode>> assignment()

Specified by:

assignment in interface AffinityAssignment

Returns:

Unmodifiable affinity assignment.

topologyVersion

public AffinityTopologyVersion topologyVersion()

Specified by:

topologyVersion in interface AffinityAssignment

Returns:

Topology version.

get

public List<ClusterNode> get(int part)

Get affinity nodes for partition.

Specified by:

get in interface AffinityAssignment

Parameters:

part - Partition.

Returns:

Affinity nodes.

getIds

public Collection<UUID> getIds(int part)

Get affinity node IDs for partition as unmodifiable collection. Depending on AFFINITY_BACKUPS_THRESHOLD we returned newly allocated HashSet or view on List.

Specified by:

getIds in interface AffinityAssignment

Parameters:

part - Partition.

Returns:

Affinity nodes IDs.

nodes

public Set<ClusterNode> nodes()

Specified by:

nodes in interface AffinityAssignment

Returns:

Nodes having primary and backup assignments.

primaryPartitionNodes

public Set<ClusterNode> primaryPartitionNodes()

Specified by:

primaryPartitionNodes in interface AffinityAssignment

Returns:

Nodes having primary partitions assignments.

primaryPartitions

public Set<Integer> primaryPartitions(UUID nodeId)

Get primary partitions for specified node ID.

Specified by:

primaryPartitions in interface AffinityAssignment

Parameters:

nodeId - Node ID to get primary partitions for.

Returns:

Primary partitions for specified node ID.

backupPartitions

public Set<Integer> backupPartitions(UUID nodeId)

Get backup partitions for specified node ID.

Specified by:

backupPartitions in interface AffinityAssignment

Parameters:

nodeId - Node ID to get backup partitions for.

Returns:

Backup partitions for specified node ID.

partitionPrimariesDifferentToIdeal

public Set<Integer> partitionPrimariesDifferentToIdeal()

Specified by:

partitionPrimariesDifferentToIdeal in interface AffinityAssignment

Returns:

Set of partitions which primary is different to primary in ideal assignment.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object o)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object

writeExternalData

protected void writeExternalData(ObjectOutput out)
                          throws IOException

Save object's specific data content.

Specified by:

writeExternalData in class IgniteDataTransferObject

Parameters:

out - Output object to write data content.

Throws:

IOException - If I/O errors occur.

readExternalData

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

Load object's specific data content.

Specified by:

readExternalData in class IgniteDataTransferObject

Parameters:

protoVer - Input object version.

in - Input object to load data content.

Throws:

IOException - If I/O errors occur.

ClassNotFoundException - If the class for an object being restored cannot be found.