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From "Eli Collins (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-3147) The client should be able to specify which network interfaces to use
Date Sun, 25 Mar 2012 21:12:28 GMT
The client should be able to specify which network interfaces to use
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                 Key: HDFS-3147
                 URL: https://issues.apache.org/jira/browse/HDFS-3147
             Project: Hadoop HDFS
          Issue Type: Sub-task
          Components: data-node
            Reporter: Eli Collins
            Assignee: Eli Collins


HDFS-3146 exposes multiple interfaces to the client. However, not all interfaces exposed to
clients should be used, eg because not all addresses given to clients may be routable by the
client, or a user may want to restrict off-cluster clients from using cluster-private interfaces.
Therefore the user should be able to configure clients to use a subset of the addresses they
are given. This can be accomplished by a new configuration option ({{dfs.client.available.interfaces}})
that takes a list of interfaces to use, interfaces that don't match the configuration are
ignored. Acceptable configuration values are the same as the {{dfs.datanode.available.interfaces}}
parameter. In addition, we could also add an option where clients automatically check if they
can connect to each interface that's given them, and filter those out by default.

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