Forget a follower Generally available; Added in 6.7.0

POST /{index}/_ccr/forget_follower
Api key auth Basic auth Bearer auth

Remove the cross-cluster replication follower retention leases from the leader.

A following index takes out retention leases on its leader index. These leases are used to increase the likelihood that the shards of the leader index retain the history of operations that the shards of the following index need to run replication. When a follower index is converted to a regular index by the unfollow API (either by directly calling the API or by index lifecycle management tasks), these leases are removed. However, removal of the leases can fail, for example when the remote cluster containing the leader index is unavailable. While the leases will eventually expire on their own, their extended existence can cause the leader index to hold more history than necessary and prevent index lifecycle management from performing some operations on the leader index. This API exists to enable manually removing the leases when the unfollow API is unable to do so.

NOTE: This API does not stop replication by a following index. If you use this API with a follower index that is still actively following, the following index will add back retention leases on the leader. The only purpose of this API is to handle the case of failure to remove the following retention leases after the unfollow API is invoked.

External documentation

Path parameters

  • index string Required

    the name of the leader index for which specified follower retention leases should be removed

Query parameters

  • timeout string

    Period to wait for a response. If no response is received before the timeout expires, the request fails and returns an error.

    Values are -1 or 0.

application/json

Body Required

  • follower_cluster string
  • follower_index string
  • follower_index_uuid string
  • leader_remote_cluster string

Responses

  • 200 application/json
    Hide response attribute Show response attribute object
    • _shards object Required
      Hide _shards attributes Show _shards attributes object
      • failed number Required
      • successful number Required
      • total number Required
      • failures array[object]
        Hide failures attributes Show failures attributes object
        • index string
        • node string
        • reason object Required

          Cause and details about a request failure. This class defines the properties common to all error types. Additional details are also provided, that depend on the error type.

          Hide reason attributes Show reason attributes object
          • type string Required

            The type of error

          • reason string | null

            A human-readable explanation of the error, in English.

            One of:
            string-1 string string-2 string | null
          • stack_trace string

            The server stack trace. Present only if the error_trace=true parameter was sent with the request.

          • caused_by object

            Cause and details about a request failure. This class defines the properties common to all error types. Additional details are also provided, that depend on the error type.

          • root_cause array[object]

            Cause and details about a request failure. This class defines the properties common to all error types. Additional details are also provided, that depend on the error type.

            Cause and details about a request failure. This class defines the properties common to all error types. Additional details are also provided, that depend on the error type.

          • suppressed array[object]

            Cause and details about a request failure. This class defines the properties common to all error types. Additional details are also provided, that depend on the error type.

            Cause and details about a request failure. This class defines the properties common to all error types. Additional details are also provided, that depend on the error type.

        • shard number Required
        • status string
      • skipped number
POST /{index}/_ccr/forget_follower 
POST /<leader_index>/_ccr/forget_follower
{
  "follower_cluster" : "<follower_cluster>",
  "follower_index" : "<follower_index>",
  "follower_index_uuid" : "<follower_index_uuid>",
  "leader_remote_cluster" : "<leader_remote_cluster>"
}
resp = client.ccr.forget_follower(
    index="<leader_index>",
    follower_cluster="<follower_cluster>",
    follower_index="<follower_index>",
    follower_index_uuid="<follower_index_uuid>",
    leader_remote_cluster="<leader_remote_cluster>",
)
const response = await client.ccr.forgetFollower({
  index: "<leader_index>",
  follower_cluster: "<follower_cluster>",
  follower_index: "<follower_index>",
  follower_index_uuid: "<follower_index_uuid>",
  leader_remote_cluster: "<leader_remote_cluster>",
});
response = client.ccr.forget_follower(
  index: "<leader_index>",
  body: {
    "follower_cluster": "<follower_cluster>",
    "follower_index": "<follower_index>",
    "follower_index_uuid": "<follower_index_uuid>",
    "leader_remote_cluster": "<leader_remote_cluster>"
  }
)
$resp = $client->ccr()->forgetFollower([
    "index" => "<leader_index>",
    "body" => [
        "follower_cluster" => "<follower_cluster>",
        "follower_index" => "<follower_index>",
        "follower_index_uuid" => "<follower_index_uuid>",
        "leader_remote_cluster" => "<leader_remote_cluster>",
    ],
]);
curl -X POST -H "Authorization: ApiKey $ELASTIC_API_KEY" -H "Content-Type: application/json" -d '{"follower_cluster":"<follower_cluster>","follower_index":"<follower_index>","follower_index_uuid":"<follower_index_uuid>","leader_remote_cluster":"<leader_remote_cluster>"}' "$ELASTICSEARCH_URL/<leader_index>/_ccr/forget_follower"
client.ccr().forgetFollower(f -> f
    .followerCluster("<follower_cluster>")
    .followerIndex("<follower_index>")
    .followerIndexUuid("<follower_index_uuid>")
    .index("<leader_index>")
    .leaderRemoteCluster("<leader_remote_cluster>")
);
Request example
Run `POST /<leader_index>/_ccr/forget_follower`. 
{
  "follower_cluster" : "<follower_cluster>",
  "follower_index" : "<follower_index>",
  "follower_index_uuid" : "<follower_index_uuid>",
  "leader_remote_cluster" : "<leader_remote_cluster>"
}
Response examples (200)
A successful response for removing the follower retention leases from the leader index. 
{
  "_shards" : {
    "total" : 1,
    "successful" : 1,
    "failed" : 0,
    "failures" : [ ]
  }
}