[root@esmaster-0 elasticsearch]# curl -X GET "localhost:9200/_tasks/XyZwl14PQVCZs3PIS31CvA:446757054?pretty"
{
  "completed" : false,
  "task" : {
    "node" : "XyZwl14PQVCZs3PIS31CvA",
    "id" : 446757054,
    "type" : "transport",
    "action" : "indices:data/write/reindex",
    "status" : {
      "total" : 97224127,
      "updated" : 0,
      "created" : 59792000,
      "deleted" : 0,
      "batches" : 59792,
      "version_conflicts" : 0,
      "noops" : 0,
      "retries" : {
        "bulk" : 0,
        "search" : 0
      },
      "throttled_millis" : 0,
      "requests_per_second" : -1.0,
      "throttled_until_millis" : 0
    },
    "description" : "reindex from [asahf64824e974734b98918043179b8ebf65_osbasahfaroinfo_activities] to [asahf64824e974734b98918043179b8ebf65_osbasahfaroinfo_activities_3.3.4][_doc]",
    "start_time_in_millis" : 1660950307130,
    "running_time_in_nanos" : 414765057643233,
    "cancellable" : true,
    "headers" : { }
  }
}