[jira] [Created] (BOOKKEEPER-945) Add counters to track the activity of auditor and replication workers

["Rithin Shetty (JIRA)" <ji...@apache.org>]

Rithin Shetty created BOOKKEEPER-945:
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             Summary: Add counters to track the activity of auditor and replication workers
                 Key: BOOKKEEPER-945
                 URL: https://issues.apache.org/jira/browse/BOOKKEEPER-945
             Project: Bookkeeper
          Issue Type: Improvement
          Components: bookkeeper-server
    Affects Versions: 4.5.0
            Reporter: Rithin Shetty
            Assignee: Rithin Shetty
            Priority: Minor
             Fix For: 4.5.0


Once we enable auto recovery, auditor and replication workers start their activity. Today there is no way to monitor it using counters. This is a bug to track various activities of auditor and replication workers like: 

- Time taken by auditor to build the bookie->ledger list 
- No. of under replicated ledgers detected 
- Time taken by auditor to publish the under replicated ledger list 
- Time taken by auditor to check all the ledgers in the cluster 
- No. of ledgers replicated by each replication worker 
- No. of entries and bytes of data read and written by each replication worker
- Auditor can also report the distribution of ledgers within the cluster: how many bookies own a piece of ledger, etc. 





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