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From jiangwen w <wjiang...@gmail.com>
Subject Re: move meta table to ZK
Date Fri, 18 Mar 2011 04:54:59 GMT
yes , it is possible, only enhance zookeeper a little, and i have already
implement it.

On Fri, Mar 18, 2011 at 12:32 PM, Ryan Rawson <ryanobjc@gmail.com> wrote:

> Is it possible to search a list of z nodes? That is what we do now with
> meta
> in hbase.
>
> I used to be a fan, but I think self hosting all important meta data is the
> best approach. It makes lots of things easier, like replication, snapshots,
> etc.
> On Mar 17, 2011 9:27 PM, "jiangwen w" <wjiangwen@gmail.com> wrote:
> > how do you think about moving meta table to ZK, so no meta table are
> needed.
> > if we do so, we need enhance ZK in the following way:
> > 1. let children of ZNode in order.
> >
> > if we do so, we can benifit:
> >
> > 1. no need to treat meta table as a special way. this will simplify the
> code
> > a lot
> > 2. ZK is highly available, so we don't worry the availablility of the
> meta
> > data.
> > 3. currently if the region server where meta table is on failed, the
> whole
> > cluster may pause.
> > if we move meta table to ZK, there is no such problem.
> > 4. meta table may be a hotspot, but in ZK reading is scalable by adding
> more
> > observers.
> >
> >
> > Sincerely
>

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