Is Elasticsearch refresh interval useless option when updating document of specific index ?
I have two indices on my Elasticsearch (index-001, index-002) and these indices have default refresh_interval setting.
Here, I have some questions
There is no insert or update operation to index-001 ( I expect there is no refresh on index-001 )
When I update some document on index-002, Does refresh executed on index-001 ?
Then, what is ideal case to set refresh_interval -1 ?
Where can I get elasticsearch refresh execution flow ? or Can you explain some inner side steps of refresh ?