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From Harsh J <ha...@cloudera.com>
Subject Re: Create a data block in a certain data node
Date Fri, 09 Nov 2012 11:13:05 GMT
Hi Vivi,

I don't think HDFS offers any such API to do this today. What is your
use-case for needing this (replacing a given existing block with
another, arbitrary block?) though?

On Fri, Nov 9, 2012 at 7:19 AM, Vivi Lang <sqlxweiwei@gmail.com> wrote:
> Sorry, I found the previous one is full of typo and hard to understand. I
> will clarify my question:
>
> If I have got a inputstream in a datanode (and this stream contains exactly
> 64MB's data which I want to store it as a data block of the HDFS in that
> datanode. More specifically, I want to use this block to replace another
> exsiting block of one file that already stored in the HDFS), can anyone
> tell me which is the easiest way to do this?
>
> Thanks,
>
>
> On Thu, Nov 8, 2012 at 5:15 PM, Vivi Lang <sqlxweiwei@gmail.com> wrote:
>
>> Hi all,
>>
>> If I want have get a  inputstream in a datanode (and this should contains
>> exactly 64MB data which I want to replace the content of an existing data
>> block to store that content), can anyone tell me which is the easiest way
>> to do this? Moreover, I would like to write this stream in the local
>> datanode.
>>
>> Thanks,
>>



-- 
Harsh J

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