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From Azuryy Yu <azury...@gmail.com>
Subject Re: how does hdfs client write a file .
Date Mon, 24 Mar 2014 09:01:07 GMT
Can you give the URL where you looked at?


On Mon, Mar 24, 2014 at 4:49 PM, 张建伟 <connerlyzhang@gmail.com> wrote:

> hi,
>
> In the apache site,I find a document said :
>
> "A client request to create a file does not reach the NameNode
> immediately. In fact, initially the HDFS client caches the file data into a
> temporary local file. Application writes are transparently redirected to
> this temporary local file. When the local file accumulates data worth over
> one HDFS block size, the client contacts the NameNode. "
>
> does it still right in 2.2.0 and 1.2.1 version? why write a file like this?
>

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