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From Mohammad Tariq <donta...@gmail.com>
Subject Re: text file to sequence file
Date Wed, 08 Aug 2012 15:52:18 GMT
Hello Harit,

   SequenceFile is a flat file consisting of binary key/value pairs.
Since, our data is already is in key/value format it is highly
efficient to run MapReduce jobs on these files. You can get complete
info here - http://wiki.apache.org/hadoop/SequenceFile/

Regards,
    Mohammad Tariq


On Wed, Aug 8, 2012 at 9:20 PM, Harit Himanshu
<harit.subscriptions@gmail.com> wrote:
> quick question, what is sequence file?
>
> On Aug 8, 2012, at 8:13 AM, Bejoy KS wrote:
>
> If you have large number of files and using MapReduce to do the conversion
> to Sequence Files, set the output format of the MR job as
> SequenceFileOutputFormat.
> Regards
> Bejoy KS
>
> Sent from handheld, please excuse typos.
> ________________________________
> From: Flavio Dias <flaviodiasps@gmail.com>
> Date: Wed, 8 Aug 2012 09:43:26 -0300
> To: <user@hadoop.apache.org>
> ReplyTo: user@hadoop.apache.org
> Subject: text file to sequence file
>
> My text file works with one line per record with numerical data. How do I
> convert this text file to sequence file?
>
> --
> Flávio Dias
> FlavioDiasPS@gmail.com
>
>

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