Package org.apache.flink.runtime.clusterframework.types

Class AllocationID

java.lang.Object
org.apache.flink.util.AbstractID
org.apache.flink.runtime.clusterframework.types.AllocationID
All Implemented Interfaces:
Serializable, Comparable<org.apache.flink.util.AbstractID>
public class AllocationID extends org.apache.flink.util.AbstractID
Unique identifier for a physical slot allocated by a JobManager via the ResourceManager from a TaskManager. The ID is assigned once the JobManager (or its SlotPool) first requests the slot and is constant across retries.

This ID is used by the TaskManager and ResourceManager to track and synchronize which slots are allocated to which JobManager and which are free.

In contrast to this AllocationID, the SlotRequestId is used when a task requests a logical slot from the SlotPool. Multiple logical slot requests can map to one physical slot request (due to slot sharing).

See Also:

  • Field Summary

    Fields inherited from class org.apache.flink.util.AbstractID

    lowerPart, SIZE, upperPart

  • Constructor Summary

    Constructors
    Constructor
    Description
    AllocationID()
    Constructs a new random AllocationID.
    AllocationID(long lowerPart, long upperPart)
    Constructs a new AllocationID with the given parts.

  • Method Summary

    Modifier and Type
    Method
    Description
    static AllocationID
    fromHexString(String hexString)
     

    Methods inherited from class org.apache.flink.util.AbstractID

    compareTo, equals, getBytes, getLowerPart, getUpperPart, hashCode, toHexString, toString

    Methods inherited from class java.lang.Object

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

  • Constructor Details

    • AllocationID

      public AllocationID()
      Constructs a new random AllocationID.

    • AllocationID

      public AllocationID(long lowerPart, long upperPart)
      Constructs a new AllocationID with the given parts.
      Parameters:
      lowerPart - the lower bytes of the ID
      upperPart - the higher bytes of the ID

  • Method Details