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From "ASF GitHub Bot (Jira)" <j...@apache.org>
Subject [jira] [Work logged] (HDDS-2034) Async RATIS pipeline creation and destroy through heartbeat commands
Date Tue, 08 Oct 2019 03:10:00 GMT

     [ https://issues.apache.org/jira/browse/HDDS-2034?focusedWorklogId=324828&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-324828
]

ASF GitHub Bot logged work on HDDS-2034:
----------------------------------------

                Author: ASF GitHub Bot
            Created on: 08/Oct/19 03:09
            Start Date: 08/Oct/19 03:09
    Worklog Time Spent: 10m 
      Work Description: ChenSammi commented on issue #1469: HDDS-2034. Async RATIS pipeline
creation and destroy through heartbea…
URL: https://github.com/apache/hadoop/pull/1469#issuecomment-539294113
 
 
   > > I think the purpose of safemode is to guarantee that Ozone cluster is ready to
provide service to Ozone client once safemode is exited.
   > 
   > @ChenSammi I agree with that. I think the problem occurs with OneReplicaPipelineSafeModeRule.
This rule makes sure that atleast one datanode in the old pipeline is reported so that reads
for OPEN containers can go through. Here I think that old pipelines need to be tracked separately.
   
   OK, I will try to separate the olds from the new ones. 
 
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Issue Time Tracking
-------------------

    Worklog Id:     (was: 324828)
    Time Spent: 11.5h  (was: 11h 20m)

> Async RATIS pipeline creation and destroy through heartbeat commands
> --------------------------------------------------------------------
>
>                 Key: HDDS-2034
>                 URL: https://issues.apache.org/jira/browse/HDDS-2034
>             Project: Hadoop Distributed Data Store
>          Issue Type: Sub-task
>            Reporter: Sammi Chen
>            Assignee: Sammi Chen
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 11.5h
>  Remaining Estimate: 0h
>
> Currently, pipeline creation and destroy are synchronous operations. SCM directly connect
to each datanode of the pipeline through gRPC channel to create the pipeline to destroy the
pipeline.  
> This task is to remove the gRPC channel, send pipeline creation and destroy action through
heartbeat command to each datanode.



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