Class ConcurrentRebalanceAllocationDecider


public class ConcurrentRebalanceAllocationDecider extends AllocationDecider
Similar to the ClusterRebalanceAllocationDecider this AllocationDecider controls the number of currently in-progress re-balance (relocation) operations and restricts node allocations if the configured threshold is reached. The default number of concurrent rebalance operations is set to 2

Re-balance operations can be controlled in real-time via the cluster update API using cluster.routing.allocation.cluster_concurrent_rebalance. Iff this setting is set to -1 the number of concurrent re-balance operations are unlimited.