Github user rakeshadr commented on a diff in the pull request:

    https://github.com/apache/zookeeper/pull/466#discussion_r182332830
  
    --- Diff: 
src/java/main/org/apache/zookeeper/server/command/MonitorCommand.java ---
    @@ -75,9 +79,9 @@ public void commandRun() {
                 print("synced_followers", 
leader.getForwardingFollowers().size());
                 print("pending_syncs", leader.getNumPendingSyncs());
     
    -            print("last_proposal_size", 
leader.getProposalStats().getLastProposalSize());
    -            print("max_proposal_size", 
leader.getProposalStats().getMaxProposalSize());
    -            print("min_proposal_size", 
leader.getProposalStats().getMinProposalSize());
    +            print("last_proposal_size", 
leader.getProposalStats().getLast());
    --- End diff --
    
    One more observation. It seems "ProposalStats" is reused for 
clientResponseStats metrics, but it may create confusions due to the method 
name mismatches. Again, ProposalStats javadocs says "Provides live statistics 
about a running Leader."  Also, stats will evolve and could be chance of adding 
unrelated metrics later. 
    
    How about create a new class "ResponseStats" and name metrics like below. 
If we look at the existing min_proposal_size metrics, they didn't use the term 
leader/quorum. Keeping that in mind, do we need specifically ''client'' term in 
the metrics, simply response gives a context to the users that server-to-client 
response. Whats your opinion?
    ```
    last_response_size,
    max_response_size,
    min_response_size
    ```


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