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From Patrick Schless <patrick.schl...@gmail.com>
Subject Replication - ports/hosts
Date Mon, 17 Jun 2013 19:06:15 GMT
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?

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?

Thanks,
Patrick

[1] http://hbase.apache.org/replication.html
[2]
http://hbase.apache.org/apidocs/org/apache/hadoop/hbase/replication/package-summary.html#requirements

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