Package org.elasticsearch.gateway

Class PriorityComparator

java.lang.Object
org.elasticsearch.gateway.PriorityComparator
All Implemented Interfaces:
java.util.Comparator<ShardRouting>
public abstract class PriorityComparator
extends java.lang.Object
implements java.util.Comparator<ShardRouting>
A comparator that compares ShardRouting based on it's indexes priority (index.priority), it's creation date (index.creation_date), or eventually by it's index name in reverse order. We try to recover first shards from an index with the highest priority, if that's the same we try to compare the timestamp the index is created and pick the newer first (time-based indices, here the newer indices matter more). If even that is the same, we compare the index name which is useful if the date is baked into the index name. ie logstash-2015.05.03.

  • Constructor Summary

    Constructors 
    Constructor Description
    PriorityComparator()  

  • Method Summary

    Modifier and Type Method Description
    int compare​(ShardRouting o1, ShardRouting o2)  
    static PriorityComparator getAllocationComparator​(RoutingAllocation allocation)
    Returns a PriorityComparator that uses the RoutingAllocation index metadata to access the index setting per index.
    protected abstract Settings getIndexSettings​(Index index)  

    Methods inherited from class java.lang.Object

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

    Methods inherited from interface java.util.Comparator

    equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong