Get Cross-Cluster Replication Stats APIedit

Warning

This functionality is in beta and is subject to change. The design and code is less mature than official GA features and is being provided as-is with no warranties. Beta features are not subject to the support SLA of official GA features.

Get cross-cluster replication stats.

Descriptionedit

This API gets cross-cluster replication stats. This API will return all stats related to cross-cluster replication. In particular, this API returns stats about auto-following, and returns the same shard-level stats as in the get follower stats API.

Requestedit

GET /_ccr/stats

Resultsedit

This API returns the following information:

auto_follow_stats
(object) an object representing stats for the auto-follow coordinator

This object consists of the following fields:

auto_follow_stats.number_of_failed_follow_indices
(long) the number of indices that the auto-follow coordinator failed to automatically follow; the causes of recent failures are captured in the logs of the elected master node, and in the auto_follow_stats.recent_auto_follow_errors field
auto_follow_stats.number_of_failed_remote_cluster_state_requests
(long) the number of times that the auto-follow coordinator failed to retrieve the cluster state from a remote cluster registered in a collection of auto-follow patterns
auto_follow_stats.number_of_successful_follow_indices
(long) the number of indices that the auto-follow coordinator successfully followed
auto_follow_stats.recent_auto_follow_errors
(array) an array of objects representing failures by the auto-follow coordinator
follow_stats
(object) an object representing shard-level stats for follower indices; refer to the details of the response in the get follower stats API

Exampleedit

This example retrieves cross-cluster replication stats:

GET /_ccr/stats

The API returns the following results:

{
  "auto_follow_stats" : {
    "number_of_failed_follow_indices" : 0,
    "number_of_failed_remote_cluster_state_requests" : 0,
    "number_of_successful_follow_indices" : 1,
    "recent_auto_follow_errors" : [ ]
  },
  "follow_stats" : {
    "indices" : [
      {
        "index" : "follower_index",
        "shards" : [
          {
            "remote_cluster" : "remote_cluster",
            "leader_index" : "leader_index",
            "follower_index" : "follower_index",
            "shard_id" : 0,
            "leader_global_checkpoint" : 1024,
            "leader_max_seq_no" : 1536,
            "follower_global_checkpoint" : 768,
            "follower_max_seq_no" : 896,
            "last_requested_seq_no" : 897,
            "outstanding_read_requests" : 8,
            "outstanding_write_requests" : 2,
            "write_buffer_operation_count" : 64,
            "follower_mapping_version" : 4,
            "follower_settings_version" : 2,
            "total_read_time_millis" : 32768,
            "total_read_remote_exec_time_millis" : 16384,
            "successful_read_requests" : 32,
            "failed_read_requests" : 0,
            "operations_read" : 896,
            "bytes_read" : 32768,
            "total_write_time_millis" : 16384,
            "write_buffer_size_in_bytes" : 1536,
            "successful_write_requests" : 16,
            "failed_write_requests" : 0,
            "operations_written" : 832,
            "read_exceptions" : [ ],
            "time_since_last_read_millis" : 8
          }
        ]
      }
    ]
  }
}