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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4353) Encapsulate connections to peers in Peer and PeerServer classes
Date Wed, 09 Jan 2013 20:22:14 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4353?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Colin Patrick McCabe updated HDFS-4353:
---------------------------------------

    Status: Patch Available  (was: Reopened)
    
> Encapsulate connections to peers in Peer and PeerServer classes
> ---------------------------------------------------------------
>
>                 Key: HDFS-4353
>                 URL: https://issues.apache.org/jira/browse/HDFS-4353
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: datanode, hdfs-client
>    Affects Versions: 2.0.3-alpha
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>         Attachments: _02a.patch, 02b-cumulative.patch, 02c.patch, 02c.patch, 02-cumulative.patch,
02d.patch, 02e.patch, 02f.patch
>
>
> Encapsulate connections to peers into the {{Peer}} and {{PeerServer}} classes.  Since
many Java classes may be involved with these connections, it makes sense to create a container
for them.  For example, a connection to a peer may have an input stream, output stream, readablebytechannel,
encrypted output stream, and encrypted input stream associated with it.
> This makes us less dependent on the {{NetUtils}} methods which use {{instanceof}} to
manipulate socket and stream states based on the runtime type.  it also paves the way to introduce
UNIX domain sockets which don't inherit from {{java.net.Socket}}.

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