[jira] [Resolved] (KUDU-434) Add/replace nodes in a tablet (handle permanent node failures) - ability to perform manual changes

["Todd Lipcon (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KUDU-434?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Todd Lipcon resolved KUDU-434.
------------------------------
       Resolution: Fixed
    Fix Version/s: n/a

I think this umbrella ticket has outlived its useful life, since the main work has been integrated for nigh on a year and we've been filing new bugs/work against the same area as separate JIRAs. Doesn't make sense to have it keep hanging around as a blocker. We can upgrade individual subtasks or new JIRAs to blocker status as necessary.

> Add/replace nodes in a tablet (handle permanent node failures) - ability to perform manual changes
> --------------------------------------------------------------------------------------------------
>
>                 Key: KUDU-434
>                 URL: https://issues.apache.org/jira/browse/KUDU-434
>             Project: Kudu
>          Issue Type: New Feature
>          Components: consensus, tserver
>    Affects Versions: M5
>            Reporter: Todd Lipcon
>            Assignee: Mike Percy
>            Priority: Blocker
>              Labels: kudu-roadmap
>             Fix For: n/a
>
>
> This tracks work required to handle a few similar use cases:
> - node crashes and doesn't come back ever. a new node needs to be recruited to get a tablet's replication back up to 3
> -- equivalently, a node loses its disks and thus is essentially a new node
> - add a new node to the cluster, and balance some existing data onto that one
> Implementation-wise:
> - ability to bootstrap a new node into a quorum (copy existing tablet data)
> - ability to change-config a quorum to include a new peer
> - some administrative commands to explicitly migrate data to perform manual load balancing (automatic load balancing tracked separately)



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