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Posted to notifications@accumulo.apache.org by "Noe (JIRA)" <ji...@apache.org> on 2016/07/09 16:54:10 UTC

[jira] [Commented] (ACCUMULO-3590) Rolling upgrade support

    [ https://issues.apache.org/jira/browse/ACCUMULO-3590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15369184#comment-15369184 ] 

Noe commented on ACCUMULO-3590:
-------------------------------

Is it possible to do a manual rolling upgrade from 1.6.2 to 1.72? Let say bring up 1.7 tablet servers then shutdown the 1.6? Or is data serialization currently a problem across the 2 versions?

> Rolling upgrade support
> -----------------------
>
>                 Key: ACCUMULO-3590
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3590
>             Project: Accumulo
>          Issue Type: Improvement
>            Reporter: Josh Elser
>             Fix For: 1.9.0
>
>
> We really lack any support for rolling upgrades between versions of Accumulo.
> Need to have a way to provide seamless upgrades between certain versions of Accumulo which minimize any downtime/impact on users of the system.
> Need to cover fundamental control features (like a rolling upgrade), changes to our serialized data structures (help prevent us from goofing up serialization across versions -- thrift/protobuf/etc), backwards/forward compatible RFile and WAL support (including control), lots of tests, and lots of documentation.



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