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c

org.apache.spark.storage

BasicBlockReplicationPolicy

class BasicBlockReplicationPolicy extends BlockReplicationPolicy with Logging

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@DeveloperApi()
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Logging, BlockReplicationPolicy, AnyRef, Any
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  1. BasicBlockReplicationPolicy
  2. Logging
  3. BlockReplicationPolicy
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Instance Constructors

  1. new BasicBlockReplicationPolicy()

Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##(): Int
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    AnyRef → Any
  3. final def ==(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
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    Any
  5. def clone(): AnyRef
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  7. def equals(arg0: Any): Boolean
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  8. def finalize(): Unit
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  9. final def getClass(): Class[_]
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  10. def hashCode(): Int
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    @native()
  11. def initializeLogIfNecessary(isInterpreter: Boolean, silent: Boolean = false): Boolean
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    protected
    Definition Classes
    Logging
  12. def initializeLogIfNecessary(isInterpreter: Boolean): Unit
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    protected
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    Logging
  13. final def isInstanceOf[T0]: Boolean
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    Any
  14. def isTraceEnabled(): Boolean
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    protected
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    Logging
  15. def log: Logger
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    protected
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    Logging
  16. def logDebug(msg: ⇒ String, throwable: Throwable): Unit
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    protected
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    Logging
  17. def logDebug(msg: ⇒ String): Unit
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    protected
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    Logging
  18. def logError(msg: ⇒ String, throwable: Throwable): Unit
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    protected
    Definition Classes
    Logging
  19. def logError(msg: ⇒ String): Unit
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    protected
    Definition Classes
    Logging
  20. def logInfo(msg: ⇒ String, throwable: Throwable): Unit
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    Logging
  21. def logInfo(msg: ⇒ String): Unit
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    Logging
  22. def logName: String
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    Logging
  23. def logTrace(msg: ⇒ String, throwable: Throwable): Unit
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    protected
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    Logging
  24. def logTrace(msg: ⇒ String): Unit
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    protected
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    Logging
  25. def logWarning(msg: ⇒ String, throwable: Throwable): Unit
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    Logging
  26. def logWarning(msg: ⇒ String): Unit
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  27. final def ne(arg0: AnyRef): Boolean
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  28. final def notify(): Unit
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    AnyRef
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    @native()
  29. final def notifyAll(): Unit
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    @native()
  30. def prioritize(blockManagerId: BlockManagerId, peers: Seq[BlockManagerId], peersReplicatedTo: HashSet[BlockManagerId], blockId: BlockId, numReplicas: Int): List[BlockManagerId]

    Method to prioritize a bunch of candidate peers of a block manager.

    Method to prioritize a bunch of candidate peers of a block manager. This implementation replicates the behavior of block replication in HDFS. For a given number of replicas needed, we choose a peer within the rack, one outside and remaining blockmanagers are chosen at random, in that order till we meet the number of replicas needed. This works best with a total replication factor of 3, like HDFS.

    blockManagerId

    Id of the current BlockManager for self identification

    peers

    A list of peers of a BlockManager

    peersReplicatedTo

    Set of peers already replicated to

    blockId

    BlockId of the block being replicated. This can be used as a source of randomness if needed.

    numReplicas

    Number of peers we need to replicate to

    returns

    A prioritized list of peers. Lower the index of a peer, higher its priority

    Definition Classes
    BasicBlockReplicationPolicy → BlockReplicationPolicy
  31. final def synchronized[T0](arg0: ⇒ T0): T0
    Definition Classes
    AnyRef
  32. def toString(): String
    Definition Classes
    AnyRef → Any
  33. final def wait(): Unit
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    AnyRef
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    @throws( ... )
  34. final def wait(arg0: Long, arg1: Int): Unit
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    @throws( ... )
  35. final def wait(arg0: Long): Unit
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Inherited from Logging

Inherited from BlockReplicationPolicy

Inherited from AnyRef

Inherited from Any

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