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https://issues.apache.org/jira/browse/RATIS-647?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16938855#comment-16938855
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Lokesh Jain commented on RATIS-647:
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[~avijayan] The changes look good to me. There are few checkstyle and javac
issues. +1 o.w.
> Create metrics associated with RaftLog for RaftServer
> -----------------------------------------------------
>
> Key: RATIS-647
> URL: https://issues.apache.org/jira/browse/RATIS-647
> Project: Ratis
> Issue Type: Sub-task
> Components: server
> Affects Versions: 0.4.0
> Reporter: Shashikant Banerjee
> Assignee: Aravindan Vijayan
> Priority: Major
> Fix For: 0.4.0
>
> Attachments: RATIS-647-000.patch, RATIS-647-001.patch,
> RATIS-647-002.patch, RATIS-647-003.patch, RATIS-647-004.patch,
> RATIS-647-005.patch, RATIS-647-006.patch
>
>
> We need the following metrics related to RaftLog and RaftLogWorker:
> |raftLogSyncLatency|Time taken to sync raft log|
> |numRaftLogSyncOps|Number of Raft log sync calls with respect to time(equals
> no of FlushStateMacine Calls)|
> |raftLogSynBatchSize|No of raft log entries synced with each flush call|
> |raftLogReadLatency|Time required to read a raft log entry from actual raft
> log file and create a raft log entry (Raft log read latency)|
> |raftLogAppendLatency|Total time taken to append a raft log entry (this also
> includes writeStateMachineData which will vary depending upon the size of the
> data to be written as well as external factors)|
> |raftLogEnqueuedTime|Time of RaftLogEntry in the Raft Log Worker Queue|
> |raftLogQueueingDelay|Time required to enqueue a raft Log entry in raft log
> worker queue|
> |raftLogSegmentLoadLatency|Time required to load and process raft log
> segments during restart|
> |raftLogWorkerQueueSize|Raft log worker queue size which at any time gives
> the no of pending log entries to be committed to the raft log.|
> |raftLogCacheMissCount|Number of RaftLogCacheMisses |
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