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MapReduce >> mail # user >> updates in hdfs


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Re: updates in hdfs
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
<[EMAIL PROTECTED]> wrote:
> Hi,
>
> Is there any mechanism on how to do updates to a files on hdfs?
>
> Regards
> shiv

--
Harsh J
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB