[jira] [Updated] (RATIS-90) After hitting IOException, RaftClient should randomly pick a known server as leader

["Jing Zhao (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/RATIS-90?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jing Zhao updated RATIS-90:
---------------------------
    Attachment: RATIS-90.000.patch

Upload the patch to fix.

> After hitting IOException, RaftClient should randomly pick a known server as leader
> -----------------------------------------------------------------------------------
>
>                 Key: RATIS-90
>                 URL: https://issues.apache.org/jira/browse/RATIS-90
>             Project: Ratis
>          Issue Type: Bug
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>         Attachments: RATIS-90.000.patch
>
>
> This is an issue found by Nicholas: currently after the client hit an IOException when submitting request to a server (say s0 dies), it always pick the "next" raft server (say s1) in its local server list. If s1 returns a NotLeaderException and suggests s0 as the new leader, then the client may go into the same process again. We should let the client randomly pick a server from the list when it hits an exception and does not know which server is the new leader.



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