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

["jeff hallyburton (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ACCUMULO-3590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15652130#comment-15652130 ] 

jeff hallyburton commented on ACCUMULO-3590:
--------------------------------------------

Regarding this, what would the process for shutdown, upgrade, start up look like?  My problem is that accumulo continually restarts the tablet server after a short interval (give or take 2 minutes) when using stop-here.sh.  I don't expect to need to update accumulo that often, but would be nice to be able to do this one node at a time.

> 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: 2.0.0
>
>
> 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.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)