zookeeper node count

[Henry Hung <YT...@winbond.com>]

Hi All,

My understanding is that hbase master node and hadoop name node are the single point of failures in the cluster.
So for Production environment I will have 2 servers configured as Active / Passive Cluster with share storage, if the Active server crashed, then Passive will take over and bring up the name node / master node.
Now my only concern is the zookeeper node, right now I intend to run single zookeeper node in Active server, and configured it to be able to failover to Passive when disaster happens.
My question is can I always use 1 zookeeper node to handle all clients request? Or should I scale it according to how many client that will make read/write?

Best regards,
Henry

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Re: zookeeper node count

[Ted Yu <yu...@gmail.com>]

Please take a look at http://hbase.apache.org/book.html#zookeeper

There is section 'How many ZooKeepers should I run?'

Cheers

On Thu, Jul 25, 2013 at 1:44 AM, Henry Hung <YT...@winbond.com> wrote:

> Hi All,
>
> My understanding is that hbase master node and hadoop name node are the
> single point of failures in the cluster.
> So for Production environment I will have 2 servers configured as Active /
> Passive Cluster with share storage, if the Active server crashed, then
> Passive will take over and bring up the name node / master node.
> Now my only concern is the zookeeper node, right now I intend to run
> single zookeeper node in Active server, and configured it to be able to
> failover to Passive when disaster happens.
> My question is can I always use 1 zookeeper node to handle all clients
> request? Or should I scale it according to how many client that will make
> read/write?
>
> Best regards,
> Henry
>
> ________________________________
> The privileged confidential information contained in this email is
> intended for use only by the addressees as indicated by the original sender
> of this email. If you are not the addressee indicated in this email or are
> not responsible for delivery of the email to such a person, please kindly
> reply to the sender indicating this fact and delete all copies of it from
> your computer and network server immediately. Your cooperation is highly
> appreciated. It is advised that any unauthorized use of confidential
> information of Winbond is strictly prohibited; and any information in this
> email irrelevant to the official business of Winbond shall be deemed as
> neither given nor endorsed by Winbond.
>