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https://issues.apache.org/jira/browse/HDFS-11740?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Weiwei Yang updated HDFS-11740:
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    Attachment:     (was: HDFS-11725-HDFS-7240.001.patch)

> Ozone: Differentiate time interval for different DatanodeStateMachine state 
> tasks
> ---------------------------------------------------------------------------------
>
>                 Key: HDFS-11740
>                 URL: https://issues.apache.org/jira/browse/HDFS-11740
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ozone
>            Reporter: Weiwei Yang
>            Assignee: Weiwei Yang
>         Attachments: statemachine_1.png, statemachine_2.png
>
>
> Currently datanode state machine transitioned between tasks in a fixed time 
> interval, defined by {{ScmConfigKeys#OZONE_SCM_HEARTBEAT_INTERVAL_SECONDS}}, 
> the default value is 30s. Once datanode is started, it will need 90s before 
> transited to {{Heartbeat}} state, such a long lag is not necessary. Propose 
> to improve the logic of time interval handling, it seems only the heartbeat 
> task needs to be scheduled in {{OZONE_SCM_HEARTBEAT_INTERVAL_SECONDS}} 
> interval, rest should be done without any lagging.



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