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Re: How to load csv data into HIVE
I said this assuming that a Hadoop cluster is available since Sandeep is
planning to use Hive. If that is the case then MapReduce would be faster
for such large files.

Regards,
    Mohammad Tariq

On Fri, Sep 7, 2012 at 8:27 PM, Connell, Chuck <[EMAIL PROTECTED]>wrote:

>  I cannot promise which is faster. A lot depends on how clever your
> scripts are.****
>
> ** **
>
> ** **
>
> ** **
>
> *From:* Sandeep Reddy P [mailto:[EMAIL PROTECTED]]
> *Sent:* Friday, September 07, 2012 10:42 AM
> *To:* [EMAIL PROTECTED]
> *Subject:* Re: How to load csv data into HIVE****
>
> ** **
>
> Hi,
> I wrote a shell script to get csv data but when i run that script on a
> 12GB csv its taking more time. If i run a python script will that be faster?
> ****
>
> On Fri, Sep 7, 2012 at 10:39 AM, Connell, Chuck <[EMAIL PROTECTED]>
> wrote:****
>
> How about a Python script that changes it into plain tab-separated text?
> So it would look like this…****
>
>  ****
>
> 174969274<tab>14-mar-2006<tab>3522876<tab>
> <tab>14-mar-2006<tab>500000308<tab>65<tab>1<newline>
> etc…****
>
>  ****
>
> Tab-separated with newlines is easy to read and works perfectly on import.
> ****
>
>  ****
>
> Chuck Connell****
>
> Nuance R&D Data Team****
>
> Burlington, MA****
>
> 781-565-4611****
>
>  ****
>
> *From:* Sandeep Reddy P [mailto:[EMAIL PROTECTED]]
> *Subject:* How to load csv data into HIVE****
>
>  ****
>
> Hi,
> Here is the sample data
> "174969274","14-mar-2006","****
>
> 3522876","","14-mar-2006","500000308","65","1"|
> "174969275","19-jul-2006","3523154","","19-jul-2006","500000308","65","1"|
> "174969276","31-dec-2005","3530333","","31-dec-2005","500000308","65","1"|
> "174969277","14-apr-2005","3531470","","14-apr-2005","500000308","65","1"|
>
> How to load this kind of data into HIVE?
> I'm using shell script to get rid of double quotes and '|' but its taking
> very long time to work on each csv which are 12GB each. What is the best
> way to do this?****
>
>  ****
>
>
>
>
> --
> Thanks,
> sandeep****
>