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From "jeff hallyburton (JIRA)" <>
Subject [jira] [Commented] (ACCUMULO-3590) Rolling upgrade support
Date Wed, 09 Nov 2016 21:44:58 GMT


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  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:
>             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.

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