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From Josh Elser <josh.el...@gmail.com>
Subject Re: setting tserver configs from the accumulo shell
Date Wed, 05 Oct 2016 15:57:15 GMT
IIRC, a property being mutable in ZooKeeper is disjoint from whether it 
will be dynamically reloaded.

That is, a mutable ZK property does not imply that it is always 
dynamically picked up.

Billie Rinaldi wrote:
> We already keep track of this in the Property class, whether a property
> can be changed in ZooKeeper and whether it requires a restart. Perhaps
> the information has grown stale, though. The information is exposed in
> the user manual:
> http://accumulo.apache.org/1.8/accumulo_user_manual#_tserver_port_client
>
> On Tue, Oct 4, 2016 at 6:14 PM, Christopher <ctubbsii@apache.org
> <mailto:ctubbsii@apache.org>> wrote:
>
>     Right now, I think you'd probably have to track down where that
>     particular property is used in the code to determine its lifecycle.
>     I think it's going to take some work to wrangle these into discrete
>     sets for documentation purposes, in the shell or otherwise. Some
>     properties are only used during certain times early in the server's
>     lifecycle. Other properties are used on demand. Some of those on
>     demand properties are probably cached into internal state for
>     indefinite periods of time. It's hard to say which are which without
>     investigating each property individually (or through empirical testing).
>
>     On Tue, Oct 4, 2016 at 9:04 PM Jeff Kubina <jeff.kubina@gmail.com
>     <mailto:jeff.kubina@gmail.com>> wrote:
>
>         That would be very helpful, but a note in the documentation
>         would be fine initially. Is there an easy way to determine this
>         from the source code?
>
>         --
>         Jeff Kubina
>         410-988-4436 <tel:(410)%20988-4436>
>
>
>         On Tue, Oct 4, 2016 at 8:59 PM, Christopher <ctubbsii@apache.org
>         <mailto:ctubbsii@apache.org>> wrote:
>
>             Some do, some don't. One thing we could add to the shell is
>             a notification that a restart is necessary for a particular
>             change. Possibly.
>
>
>             On Tue, Oct 4, 2016, 20:25 Dave <dlmarion@comcast.net
>             <mailto:dlmarion@comcast.net>> wrote:
>
>                 I don't think so.
>
>
>                 On Oct 4, 2016 8:21 PM, Jeff Kubina
>                 <jeff.kubina@gmail.com <mailto:jeff.kubina@gmail.com>>
>                 wrote:
>
>                     Does changing the values of tserver configs in the
>                     accumulo shell, like "config -s
>                     tserver.server.threads.minimum=256", require a
>                     restart of all the tservers to become effective?
>
>
>
>

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