[jira] [Created] (HDDS-1890) Add metrics for data pipeline performance monitoring in ContainerStateMachine

["Shashikant Banerjee (JIRA)" <ji...@apache.org>]

Shashikant Banerjee created HDDS-1890:
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             Summary: Add metrics for data pipeline performance monitoring in ContainerStateMachine
                 Key: HDDS-1890
                 URL: https://issues.apache.org/jira/browse/HDDS-1890
             Project: Hadoop Distributed Data Store
          Issue Type: Bug
          Components: Ozone Datanode
    Affects Versions: 0.5.0
            Reporter: Shashikant Banerjee
            Assignee: Shashikant Banerjee
             Fix For: 0.5.0


Following metrics have been identified to be incorporated inside containerStateMachine in order to measure and monitor the data pipeline performance in datanode:

 
|containerDbAvgLoadLatency|Avg time to load a container db|
|avgWriteStateMachineDataLatency|Avg time to write stateMachine Data|
|stateMachineCacheMissRatio|Ratio of stateMachine machine cache misses to total no of readStateMachine calls|
|avgTransactionalLatency|Avg transactional time for a client request inside the stateMachine(i.e, time from startTransaction call till applyTransaction of the request completion)|
|avgContainerDbReadLatency|Avg Rocks Db write latency during putBlock|
|avgContainerDbWriteLatency|Avg Rocks DB read latency during getBlock|
|avgCommitChunkLatency|Avg time taken to rename a chunk file|
|numNotifyNoLeaderCallCount|This indicates how many times stateMachine has been notified of no leader for extended period of time|
|numNotifySlownessCallCount|Number of times a follower is notified to be slow to the stateMachine|



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