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MapReduce, mail # user - whether dfs.domain.socket.path is supported in Hadoop 1.1?


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Jun Li 2013-09-10, 18:30
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Re: whether dfs.domain.socket.path is supported in Hadoop 1.1?
Harsh J 2013-09-10, 21:17
HDFS-347 introduced this feature, and it is currently only available
in 2.1.x onwards.

On Wed, Sep 11, 2013 at 12:00 AM, Jun Li <[EMAIL PROTECTED]> wrote:
> Hi,
>
> In the link,
> http://hadoop.apache.org/docs/current/hadoop-project-dist/hadoop-hdfs/hdfs-default.xml,
>
> the explanation:
> dfs.domain.socket.path
>
> is that:
>
> "Optional. This is a path to a UNIX domain socket that will be used for
> communication between the DataNode and local HDFS clients. If the string
> "_PORT" is present in this path, it will be replaced by the TCP port of the
> DataNode."
>
> I am trying to evaluate the short-circuit read and find that typically this
> dfs.domain.socket.path is used in conjunction to enabling the short circuit
> for HDFS.
>
>
> I am using Hadoop 1.1.2. And from the source code of Hadoop 1.1.2, I can not
> find the configuration parameter of this "dfs.domain.socket.path" and I
> wonder whether this parameter setting only gets used by  Hadoop 2.* release?
>
> Could you provide explanation on this about the Hadoop version support?
>
> Regards,
>
> Jun
>
>

--
Harsh J