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HBase, mail # user - Replication - ports/hosts


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Patrick Schless 2013-06-17, 19:06
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Re: Replication - ports/hosts
Stack 2013-06-19, 05:41
On Mon, Jun 17, 2013 at 12:06 PM, Patrick Schless <[EMAIL PROTECTED]
> wrote:

> Working on setting up HBase replication across a VPN tunnel, and following
> the docs here: [1] (and here: [2]).
>
> Two questions, regarding firewall allowances required:
> 1) The docs say that the zookeeper clusters must be able to reach each
> other. I don't see any docs on why this is (the high-level diagram doesn't
> even show a ZK ensemble on the client side). Is it correct that the ZK
> ensembles need to communicate with each other?
>
>
Yes.  ZK ensemble is the gateway to the cluster whether connecting locally
or remotely as replication does.

> 2) What ports are required to be open for inter-cluster Region Server
> communication? Is it only the slave that needs to accept requests from the
> master, or does the master also accept incoming requests from the slaves?
>
Do you mean master 'cluster' in the above?  If so, yes, the master cluster
sends data to the slave cluster (master RS to slave RSs).  The
communication is one way; master to slave cluster.

If you are asking if hbase masters need to communicate, the answer is no.

St.Ack
P.S. Doug, we need to add above to doc
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Michel Segel 2013-06-19, 09:49
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Stack 2013-06-19, 15:28
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Stack 2013-06-19, 15:28
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Patrick Schless 2013-06-19, 15:57
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Shahab Yunus 2013-06-19, 18:04