Description

Added few additional metrics

• event count per minute
• event volume per minute
• number of indexes
• total segment count
• total column count
• total CMI size
• total CSG size
• Number of files (per index; key=indexName, value=(e.g., ind-0))
• Number of blocks (per index)

Fixes # (link all the GitHub issues this addresses)

Testing

Describe how you tested this code. How can the reviewers reproduce your tests?

Checklist:

Before marking your pull request as ready for review, complete the following.

• I have self-reviewed this PR.
• I have removed all print-debugging and commented-out code that should not be merged.
• I have added sufficient comments in my code, particularly in hard-to-understand areas.
• I have formatted the code, if applicable. For Go, I have run goimports -w ..