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From "Bharat Viswanadham (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDDS-1178) Healthy pipeline Chill Mode Rule
Date Tue, 26 Feb 2019 01:20:00 GMT

     [ https://issues.apache.org/jira/browse/HDDS-1178?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Bharat Viswanadham updated HDDS-1178:
-------------------------------------
    Status: Patch Available  (was: Open)

> Healthy pipeline Chill Mode Rule
> --------------------------------
>
>                 Key: HDDS-1178
>                 URL: https://issues.apache.org/jira/browse/HDDS-1178
>             Project: Hadoop Distributed Data Store
>          Issue Type: Bug
>          Components: SCM
>            Reporter: Bharat Viswanadham
>            Assignee: Bharat Viswanadham
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> This Jira is to implement one of the chill mode rule.
> h2. Pipeline Rule with configurable percentage of open pipelines with all datanodes reported:
> h2. In this rule, we consider when at least 10% of the pipelines have all 3 data node's
reported (if it is a 3 node ratis ring), and one node reported if it is a one node ratis ring.
(The percentage is configurable via ozone configuration parameter).
>  
> This rule satisfies, once the SCM is restarted, and after exiting chill mode, we have
enough pipelines to give for clients for writes to succeed.
>  



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