Some elasticsearch index could have incorrect index type during elasticsearch upgrate from 6.x to 7.x

[d3c3mber]

There's no existing/similar bug report.

• I have searched the existing issues

Describe the bug:

Some elasticsearch index could have incorrect index type during elasticsearch upgrate from 6.x to 7.x

Expected behavior:

The upgrade processure is smooth and the type for all indices rename correct.

Additional

No response

Lunettes version

No response

Kubernetes version

No response

[linuzb]

Can you give some examples?

As far as I know, elasticsearch 7.x no longer needs mapping type, so we don't need to fix the mapping type. I think we don't need to correct the mapping type, but delete the meaningless mapping type. Here is a discussion on mapping type.

[d3c3mber]

Thanks @linuzb, some indices (slo_data, slo_trace_data_daily) get inconsistent doc type from _doc to data during upgrade from es6 to es7, not sure if this happens every time.