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From Chris Rohr <>
Subject Re: what to do with shardServerList?
Date Wed, 16 Jul 2014 18:09:56 GMT
The console has a notion of online and offline to show a status to the
admins so they can be alerted if something goes offline and can take an

On Wed, Jul 16, 2014 at 12:52 PM, Tim Williams <> wrote:

> On Wed, Jul 16, 2014 at 12:31 PM, Chris Rohr <> wrote:
> > Would this be from the Thrift calls only?  (i.e. not the
> > ZookeeperClusterStatus object?)  The console uses the
> > ZookeeperClusterStatus object to get online/offline shards and
> controllers
> > from ZK.
> No, it'd be removed everywhere (thrift and zk path).  It'd basically
> get rid of the notion of 'offline' shards - your usage is essentially
> the same as the TopCommand I described. The trouble is that in a world
> of random ports a lot of bookkeeping overhead would be necessary to
> reliably maintain the notion of 'offline' or 'registered vs online'
> shards.  As I understand it, the need for them was back when the
> layout manager relied on that knowledge but the default layout manager
> is more dynamic now.  Do you just display them or is there another
> need in the console for them?
> Thanks,
> --tim

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