Package org.elasticsearch.cluster.routing.allocation

Class NodeAllocationResult

java.lang.Object

org.elasticsearch.cluster.routing.allocation.NodeAllocationResult

All Implemented Interfaces:

Comparable<NodeAllocationResult>, Writeable, ToXContent, ToXContentObject

public class NodeAllocationResult
extends Object
implements ToXContentObject, Writeable, Comparable<NodeAllocationResult>

This class represents the shard allocation decision and its explanation for a single node.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static final class	NodeAllocationResult.ShardStoreInfo	A class that captures metadata about a shard store on a node.

Nested classes/interfaces inherited from interface org.elasticsearch.xcontent.ToXContent

ToXContent.DelegatingMapParams, ToXContent.MapParams, ToXContent.Params

Nested classes/interfaces inherited from interface org.elasticsearch.common.io.stream.Writeable

Writeable.Reader<V>, Writeable.Writer<V>

Field Summary

Fields inherited from interface org.elasticsearch.xcontent.ToXContent

EMPTY_PARAMS

Constructor Summary

Constructors

Constructor	Description
NodeAllocationResult(DiscoveryNode node, AllocationDecision nodeDecision, Decision canAllocate, int weightRanking)
NodeAllocationResult(DiscoveryNode node, Decision decision, int weightRanking)
NodeAllocationResult(DiscoveryNode node, NodeAllocationResult.ShardStoreInfo shardStoreInfo, Decision decision)
NodeAllocationResult(StreamInput in)

Method Summary

Modifier and Type	Method	Description
int	compareTo(NodeAllocationResult other)
Decision	getCanAllocateDecision()	The decision details for allocating to this node.
DiscoveryNode	getNode()	Get the node that this decision is for.
AllocationDecision	getNodeDecision()	Gets the AllocationDecision for allocating to this node.
NodeAllocationResult.ShardStoreInfo	getShardStoreInfo()	Get the shard store information for the node, if it exists.
int	getWeightRanking()	The weight ranking for allocating a shard to the node.
boolean	isWeightRanked()	Is the weight assigned for the node?
XContentBuilder	toXContent(XContentBuilder builder, ToXContent.Params params)
void	writeTo(StreamOutput out)	Write this into the StreamOutput.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.elasticsearch.xcontent.ToXContentObject

isFragment

Constructor Details

NodeAllocationResult

public NodeAllocationResult(DiscoveryNode node,
 NodeAllocationResult.ShardStoreInfo shardStoreInfo,
 @Nullable
 Decision decision)

NodeAllocationResult

public NodeAllocationResult(DiscoveryNode node,
 AllocationDecision nodeDecision,
 Decision canAllocate,
 int weightRanking)

NodeAllocationResult

public NodeAllocationResult(DiscoveryNode node,
 Decision decision,
 int weightRanking)

NodeAllocationResult

public NodeAllocationResult(StreamInput in)
                     throws IOException

Throws:

IOException

Method Details

writeTo

public void writeTo(StreamOutput out)
             throws IOException

Description copied from interface: Writeable

Write this into the StreamOutput.

Specified by:

writeTo in interface Writeable

Throws:

IOException

getNode

public DiscoveryNode getNode()

Get the node that this decision is for.

getShardStoreInfo

@Nullable
public NodeAllocationResult.ShardStoreInfo getShardStoreInfo()

Get the shard store information for the node, if it exists.

getCanAllocateDecision

@Nullable
public Decision getCanAllocateDecision()

The decision details for allocating to this node. Returns null if no allocation decision was taken on the node; in this case, getNodeDecision() will return AllocationDecision.NO.

isWeightRanked

public boolean isWeightRanked()

Is the weight assigned for the node?

getWeightRanking

public int getWeightRanking()

The weight ranking for allocating a shard to the node. Each node will have a unique weight ranking that is relative to the other nodes against which the deciders ran. For example, suppose there are 3 nodes which the allocation deciders decided upon: node1, node2, and node3. If node2 had the best weight for holding the shard, followed by node3, followed by node1, then node2's weight will be 1, node3's weight will be 2, and node1's weight will be 1. A value of 0 means the weight was not calculated or factored into the decision.

getNodeDecision

public AllocationDecision getNodeDecision()

Gets the AllocationDecision for allocating to this node.

toXContent

public XContentBuilder toXContent(XContentBuilder builder,
 ToXContent.Params params)
                           throws IOException

Specified by:

toXContent in interface ToXContent

Throws:

IOException

compareTo

public int compareTo(NodeAllocationResult other)

Specified by:

compareTo in interface Comparable<NodeAllocationResult>