Indexes on Ephemeral Buckets

Users will be able to create Standard GSI (Plasma) indexes on Ephemeral buckets.

Snapshot Persistence

• For MOI, index snapshots will not be persisted for ephemeral buckets which is the same as earlier. On indexer crash we will rollback to 0 and recreate the indexes. The decision of not enabling the persistence here was a customer requirement.
• For Plasma, index snapshots will be the same as that of non ephemeral buckets and will be persisted to disk.

For ephemeral buckets GSI might return stale data for stale-ok queries (Different data from KV) when KV is restarted for various reasons as it might take some time for the indexer to get the DCP event to rollback.