Package org.elasticsearch.cluster.routing.allocation

Enum Class AllocationDecision

<AllocationDecision>
org.elasticsearch.cluster.routing.allocation.AllocationDecision
All Implemented Interfaces:
, <, Writeable
public enum AllocationDecision extends <AllocationDecision> implements Writeable
An enum which represents the various decision types that can be taken by the allocators and deciders for allocating a shard to a node.

  • Enum Constant Details

    • YES

      public static final AllocationDecision YES
      The shard can be allocated to a node.

    • THROTTLED

      public static final AllocationDecision THROTTLED
      The allocation attempt was throttled for the shard.

    • NO

      public static final AllocationDecision NO
      The shard cannot be allocated, which can happen for any number of reasons, including the allocation deciders gave a NO decision for allocating.

    • WORSE_BALANCE

      public static final AllocationDecision WORSE_BALANCE
      The shard could not be rebalanced to another node despite rebalancing being allowed, because moving the shard to the other node would not form a better cluster balance.

    • AWAITING_INFO

      public static final AllocationDecision AWAITING_INFO
      Waiting on getting shard data from all nodes before making a decision about where to allocate the shard.

    • ALLOCATION_DELAYED

      public static final AllocationDecision ALLOCATION_DELAYED
      The allocation decision has been delayed waiting for a replica with a shard copy that left the cluster to rejoin.

    • NO_VALID_SHARD_COPY

      public static final AllocationDecision NO_VALID_SHARD_COPY
      The shard was denied allocation because there were no valid shard copies found for it amongst the nodes in the cluster.

    • NO_ATTEMPT

      public static final AllocationDecision NO_ATTEMPT
      No attempt was made to allocate the shard

  • Method Details

    • values

      public static AllocationDecision[] values()
      Returns an array containing the constants of this enum class, in the order they are declared.
      Returns:
      an array containing the constants of this enum class, in the order they are declared

    • valueOf

      public static  name)
      Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)
      Parameters:
      name - the name of the enum constant to be returned.
      Returns:
      the enum constant with the specified name
      Throws:
      - if this enum class has no constant with the specified name
      - if the argument is null

    • writeTo

      public void writeTo​(StreamOutput out) throws
      Description copied from interface: Writeable
      Write this into the StreamOutput.
      Specified by:
      writeTo in interface Writeable
      Throws:

    • readFrom

      public static AllocationDecision readFrom​(StreamInput in) throws
      Throws:

    • fromAllocationStatus

      public static AllocationDecision fromAllocationStatus​(UnassignedInfo.AllocationStatus allocationStatus)
      Gets an AllocationDecision from a UnassignedInfo.AllocationStatus.

    • fromDecisionType

      public static AllocationDecision fromDecisionType​(Decision.Type type)
      Gets an AllocationDecision from a Decision.Type

    • toString

      public  toString()
      Overrides:
       in class <AllocationDecision>