STRSPLIT should return a bag rather than a tuple

[praveenesh kumar <pr...@gmail.com>]

Hi there,

I had a scenario, which required me to change the STRSPLIT code. The
scenario was as follows:

I have a data like:
1       A|1|1   some
2       B|2|2   data
3       C|3|3   hadoop


Need output like this :

1    A    some
1    1    some
1    1    some
2    B    data
2    2     data
2    2     data
3    C    hadoop
3    3    hadoop
3    3    hadoop

I was trying to use STRSPLIT($1,'\\|') which was returning a tuple, If I do
flatten on it, it converts the data into columns.

If we return a bag of tuples, we can easily use flatten() to convert it
into rows, plus can also convert that into Tuple using TOTUPLE() UDF (if
someone just want to use it as tuple.

Please suggest if this looks like a valid change. I am happy to file a JIRA
ticket and work accordingly on that.

Regards
Praveenesh

Re: STRSPLIT should return a bag rather than a tuple

[Daniel Dai <da...@hortonworks.com>]

It is be better but need to change in a backward compatible way (eg,
create a new UDF instead of changing existing one).

On Fri, Mar 21, 2014 at 9:52 AM, praveenesh kumar <pr...@gmail.com> wrote:
> Hi there,
>
> I had a scenario, which required me to change the STRSPLIT code. The
> scenario was as follows:
>
> I have a data like:
> 1       A|1|1   some
> 2       B|2|2   data
> 3       C|3|3   hadoop
>
>
> Need output like this :
>
> 1    A    some
> 1    1    some
> 1    1    some
> 2    B    data
> 2    2     data
> 2    2     data
> 3    C    hadoop
> 3    3    hadoop
> 3    3    hadoop
>
> I was trying to use STRSPLIT($1,'\\|') which was returning a tuple, If I do
> flatten on it, it converts the data into columns.
>
> If we return a bag of tuples, we can easily use flatten() to convert it
> into rows, plus can also convert that into Tuple using TOTUPLE() UDF (if
> someone just want to use it as tuple.
>
> Please suggest if this looks like a valid change. I am happy to file a JIRA
> ticket and work accordingly on that.
>
> Regards
> Praveenesh

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