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Posted to issues@kudu.apache.org by "Will Berkeley (JIRA)" <ji...@apache.org> on 2018/02/21 13:05:00 UTC

[jira] [Commented] (KUDU-2309) /masters can show the wrong list of masters

    [ https://issues.apache.org/jira/browse/KUDU-2309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16371380#comment-16371380 ] 

Will Berkeley commented on KUDU-2309:
-------------------------------------

This can also result in some alarming-looking situations, such as /masters showing two leaders. This could happen if encryption is disabled and one of the masters is permanently lost, then a new singleton master is start at the same address. Screenshot attached.

!twoleaders2309.png!

If encryption is enabled then the multimaster members will have errors trying to get the registration info of the singleton.

> /masters can show the wrong list of masters
> -------------------------------------------
>
>                 Key: KUDU-2309
>                 URL: https://issues.apache.org/jira/browse/KUDU-2309
>             Project: Kudu
>          Issue Type: Bug
>          Components: ops-tooling
>    Affects Versions: 1.6.0
>            Reporter: Will Berkeley
>            Priority: Major
>         Attachments: twoleaders2309.png
>
>
> Consider the following steps:
>  # Three masters are started with UUIDs A, B, and C.
>  # A is shut down and its data deleted. A new master with UUID D is started on the same machine.
> After this, visiting /masters on B or C should show A, B, and C as the registered masters, since they are the masters in B and C's quorum. D's /masters should just show D. However, right now we show B, C, D in all three /masters pages.



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