Get information about all currently running reindex tasks

GET /_reindex

Reindex tasks that are mid-relocation between nodes are reported once, under their original task ID, so callers do not see duplicates across the relocation chain.

If the API returns a HTTP status of 200 OK, but node_failures or task_failures are non-empty in the body, the listing is not a complete authoritative listing and may be missing tasks.

Authentication

Authorization: <value>

Elasticsearch APIs use key-based authentication. You must create an API key and use the encoded value in the request header. For example:

		curl -X GET "${ES_URL}/_cat/indices?v=true" \
  -H "Authorization: ApiKey ${API_KEY}"

For more information about where to find API keys for the Elasticsearch endpoint (${ES_URL}) for a project, go to Get started with Elasticsearch Serverless.

Query parameters

Response

application/json

reindex object[] required: The list of currently running reindex tasks.
task_failures object[]: Per-task failures encountered while listing reindex tasks. Tasks that failed are not included in the reindex array.
node_failures object[]: Node-level failures encountered while listing reindex tasks. Typically populated when a node disconnects or stops responding mid-request, reindex tasks running on such nodes will be missing from the reindex array for the duration of the disruption.

Examples

Request Console 1 / 8 languages

Console Kibana Dev Tools

GET _reindex

JavaScript Elasticsearch JavaScript Client

const response = await client.listReindex();

Python Elasticsearch Python Client

resp = client.list_reindex()

curl Shell

curl -X GET "$ELASTICSEARCH_URL/_reindex" \
  -H "Authorization: ApiKey $ELASTIC_API_KEY"

Java Elasticsearch Java Client

client.listReindex(l -> l);

C# Elasticsearch .NET Client

var response = await client.ListReindexAsync();

PHP Elasticsearch PHP Client

$resp = $client->listReindex();

Ruby Elasticsearch Ruby Client

response = client.list_reindex

Response

A successful response from GET _reindex listing a single currently running reindex task.

{
  "reindex": [
    {
      "id": "r1A2WoRbTwKZ516z6NEs5A:36619",
      "start_time_in_millis": 1762190000000,
      "running_time_in_nanos": 4200000000,
      "cancelled": false
    }
  ]
}