[jira] [Resolved] (HDDS-1559) Include committedBytes to determine Out of Space in VolumeChoosingPolicy

["Arpit Agarwal (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HDDS-1559?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arpit Agarwal resolved HDDS-1559.
---------------------------------
          Resolution: Fixed
       Fix Version/s: 0.5.0
    Target Version/s:   (was: 0.5.0)

I've committed this to trunk. Thanks for the contribution [~sdeka].

> Include committedBytes to determine Out of Space in VolumeChoosingPolicy
> ------------------------------------------------------------------------
>
>                 Key: HDDS-1559
>                 URL: https://issues.apache.org/jira/browse/HDDS-1559
>             Project: Hadoop Distributed Data Store
>          Issue Type: Improvement
>          Components: Ozone Datanode
>            Reporter: Supratim Deka
>            Assignee: Supratim Deka
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 0.5.0
>
>          Time Spent: 1h 50m
>  Remaining Estimate: 0h
>
> This is a follow-up from HDDS-1511 and HDDS-1535
> Currently  when creating a new Container, the DN invokes RoundRobinVolumeChoosingPolicy:chooseVolume(). This routine checks for (volume available space > container max size). If no eligible volume is found, the policy throws a DiskOutOfSpaceException. This is the current behaviour.
> However, the computation of available space does not take into consideration the space
> that is going to be consumed by writes to existing containers which are still Open and accepting chunk writes.
> This Jira proposes to enhance the space availability check in chooseVolume by inclusion of committed space(committedBytes in HddsVolume) in the equation.
> The handling/management of the exception in Ratis will not be modified in this Jira. That will be scoped separately as part of Datanode IO Failure handling work.



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