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akka.cluster.ddata

RemovedNodePruning

trait RemovedNodePruning extends ReplicatedData

ReplicatedData that has support for pruning of data belonging to a specific node may implement this interface. When a node is removed from the cluster these methods will be used by the Replicator to collapse data from the removed node into some other node in the cluster.

See process description in the 'CRDT Garbage' section of the Replicator documentation.

Source
ReplicatedData.scala
Linear Supertypes
ReplicatedData, AnyRef, Any
Known Subclasses
GCounter, LWWMap, ManyVersionVector, ORMap, ORMultiMap, ORSet, OneVersionVector, PNCounter, PNCounterMap, VersionVector
Type Hierarchy
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Inherited
  1. RemovedNodePruning
  2. ReplicatedData
  3. AnyRef
  4. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Visibility
  1. Public
  2. Protected

Type Members

  1. abstract type T <: ReplicatedData

    The type of the concrete implementation, e.g.

    The type of the concrete implementation, e.g. GSet[A]. To be specified by subclass.

    Definition Classes
    ReplicatedData

Abstract Value Members

  1. abstract def merge(that: T): T

    Monotonic merge function.

    Monotonic merge function.

    Definition Classes
    ReplicatedData
  2. abstract def modifiedByNodes: Set[UniqueAddress]

    The nodes that have changed the state for this data and would need pruning when such node is no longer part of the cluster.

  3. abstract def needPruningFrom(removedNode: UniqueAddress): Boolean

    Does it have any state changes from a specific node, which has been removed from the cluster.

  4. abstract def prune(removedNode: UniqueAddress, collapseInto: UniqueAddress): T

    When the removed node has been removed from the cluster the state changes from that node will be pruned by collapsing the data entries to another node.

  5. abstract def pruningCleanup(removedNode: UniqueAddress): T

    Remove data entries from a node that has been removed from the cluster and already been pruned.