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From "gschen.fudan" <10210240...@fudan.edu.cn>
Subject Re: [jira] [Created] (HDFS-4353) Encapsulate connections to peers in Peer and PeerServer classes
Date Thu, 03 Jan 2013 11:38:45 GMT

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于 2013/1/3 19:16, Colin Patrick McCabe (JIRA) 写道:
> Colin Patrick McCabe created HDFS-4353:
> ------------------------------------------
>               Summary: 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: 02-cumulative.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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