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From: Harsh J <harsh@cloudera.com>
Date: Wed, 31 Oct 2012 10:43:36 +0530
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 <CAOcnVr1LnyAGF8cTP_sjUqRLmw1+h8_C9SrJkntTYTQeVN=vLQ@mail.gmail.com>
Subject: Re: updates in hdfs
To: user@hadoop.apache.org
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Shiv,

HDFS does have file-append support (i.e. add data at end of a
previously closed file). HDFS does not have random-write support (i.e.
writing data at a selected offset in the file).

What is your use-case though, that you seek to do updates over files
on HDFS? Perhaps you are instead looking for HBase, which has a
slightly different way of storing things but provides updates+versions
in a way over HDFS.

On Wed, Oct 31, 2012 at 10:28 AM, Siva Gudavalli
<siva.gudavalli@synechron.com> wrote:
> Hi,
>
> Is there any mechanism on how to do updates to a files on hdfs?
>
> Regards
> shiv


-- 
Harsh J