Proxy index_hint to pt-archiver

Docker Image Name

{{ REGISTRY }}/db-archiver:0.0.6

What?

Add ability to pass index hint to pt-archiver

Why?

Sometimes pt-archiver is not able to determine the best index to use for querying DB
In these case suggesting an index to be used benifits in terms for run time, CPU utilisation and IOPS

How?

Pass --index_hint=<name_of_index> as option while running the command

Ability to configure a different mysql host for transient archival

What?

Add ability to configure a different mysql host for transient archival

Why?

So that primary RDS is not overloaded with DB to DB data move operation

How?

By configuring different values for host and archive_hostin db-archiver-config.yml