[BUG] Indices deletion in leader cluster do not get replicated in follower cluster

[vivekkumar1008]

What is the bug?
Deleting an index on the cluster leader does not get replicated in cluster follower.

How can one reproduce the bug?
Steps to reproduce the behavior:

1. Create an index on the cluster leader and add some documents
2. Enable the cluster replication and wait until the index gets replicated to the follower.
3. Delete index on the cluster leader
4. Wait and check on cluster follower nothing gets replicated the same index still exist

What is the expected behavior?
The deleted index on cluster leader should get delete in cluster follower.

What is your host/environment?

• Distributor ID: Ubuntu
• Description: Ubuntu 20.04.6 LTS
• Release: 20.04
• Codename: focal

Do you have any screenshots?
N/A

Do you have any additional context?
Using Opensearch:1.3.9

[dblock]

[Catch All Triage - 1, 2, 3, 4, 5]

[nisgoel-amazon]

@vivekkumar1008 Thanks for creating the issue.
This is expected behavior, this is intentional to stop replication on follower cluster when we delete index on leader index. We did this behaviour by keeping few things in mind like if some one wants to do cross cluster search on the follower cluster.

Cleanup of follower cluster indices needs to be done separately.

[bharath-techie]

@nisgoel-amazon should we look into the path of giving this as an option ?

[nisgoel-amazon]

We can take it as a feature request and happy to have contributions.
But this is not an issue, so we can close this one after creating feature request.

[vivekkumar1008]

Hey thank you so much to give insight info and also taking this request as future feature development.