[jira] [Commented] (RATIS-1668) When there is an existing dir, if it fails, server should not initialize a new dir

["Tsz-wo Sze (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/RATIS-1668?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17577779#comment-17577779 ] 

Tsz-wo Sze commented on RATIS-1668:
-----------------------------------

We propose to have the following failure handling:
- When there are more than one existing directories, throw an exception.
- When there is an existing directory, if it fails, throw an exception but not try to initialize a new directory.
- When there is no existing directory, try to initialize a new directory from the list specified in the configuration properties until a directory succeeded or all directories failed.


> When there is an existing dir, if it fails, server should not initialize a new dir
> ----------------------------------------------------------------------------------
>
>                 Key: RATIS-1668
>                 URL: https://issues.apache.org/jira/browse/RATIS-1668
>             Project: Ratis
>          Issue Type: Improvement
>          Components: server
>            Reporter: Tsz-wo Sze
>            Assignee: Tsz-wo Sze
>            Priority: Major
>
> [~NeilJoshi] reported this in HDDS-7103.
> Currently, when there is an existing directory dirA, if dirA fails for some reason, RaftServer will try to initialize another directory dirB from the list specified in the configuration properties. Suppose dirB can be initialized successfully. The server can start at that time. However, when the server restarts, it may find dirA and dirB exist at the same time and then throw an exception. It is because the server cannot decide which one to use.



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