Index creation date is not showing up

Versions

  • opensearch-rest-client (2.4.0)
  • opensearch-java (2.1.0)

Describe the issue:
I’m using a _cat request to get some information about the indices through the opensearch java client. When I check the response, the creation date of the index is not coming out.

As you can see, the creationDate of the index is not coming out.

If I make the request directly to elasticsearch, I get the creation date, as you can see below.

Request
GET _cat/indices/opensearch_*?format=json&h=index,docs.count,health,store.size,status,creation.date.string

Response

[
  {
    "index" : "opensearch_dashboards_sample_data_logs",
    "docs.count" : "14074",
    "health" : "green",
    "store.size" : "18.6mb",
    "status" : "open",
    "creation.date.string" : "2022-11-19T08:22:13.207Z"
  }
]

Is this a bug ???
Why the creation date of the index is not coming out in the opensearch java client

This looks like a possible bug. Maybe file a bug report in the client project: