[FEATURE] Replication status API should consider the presence of follower index

[soosinha]

Is your feature request related to a problem? When the replication has failed and the customer has deleted the follower index, the replication status on follower index is shown as failed by referring to the replication metadata. We should evaluate whether to refer to the presence of the index in the cluster before showing the replication status

What solution would you like? If the index is not present on follower, then we can show the replication status as "Replication not in progress".

[aggarwalShivani]

Hi @soosinha,

1. Its been really long since this was reported. Do you still see this issue on latest Opensearch versions?
2. Can you elaborate a bit on the use-case: "replication has failed and the customer has deleted the follower index" ->

• What part of replication exactly has failed?
• If the replication had infact started, it would have turned the follower index as read-only, and thus it would not be possible to delete the follower-index (without stopping replication). So how was it deleted?
• Can you also share some steps on reproducing this issue?