Home | About | Sematext search-lucene.com search-hadoop.com
 Search Hadoop and all its subprojects:

Switch to Threaded View
Pig >> mail # dev >> Question about loader and storer


Copy link to this message
-
Re: Question about loader and storer
I have opened a JIRA https://issues.apache.org/jira/browse/PIG-3211

On Thu, Feb 21, 2013 at 6:29 PM, Prashant Kommireddi <[EMAIL PROTECTED]>wrote:

> I agree. PigStorage is the default constructed by LogicalPlanBuilder and
> it's not configurable.
>
> Jeff, can you open a JIRA? It would be a nice feature to add.
>
> -Prashant
>
>
> On Thu, Feb 21, 2013 at 6:26 PM, Aniket Mokashi <[EMAIL PROTECTED]>wrote:
>
>> I think default loader is hardcoded in the pig code. You can open a jira
>> if
>> you need such a feature.
>>
>> Thanks,
>> Aniket
>>
>>
>> On Thu, Feb 21, 2013 at 6:08 PM, Johnny Zhang <[EMAIL PROTECTED]>
>> wrote:
>>
>> > Jeff:
>> > Basically, edit the pig.properties to
>> > .....
>> > pig.load.default.statements=/tmp/.temppigbootup
>> > .....
>> >
>> > and in file /tmp/.temppigbootup, you have load statement
>> > data = LOAD 'top_queries_input_data.txt' AS (query:CHARARRAY,
>> count:INT);
>> >
>> > you can edit content to use other loader here.
>> >
>> > Hope it is helpful. This is different from what you want, and I am also
>> > searching if we can define default loader other than PigStorage.
>> >
>> > Johnny
>> >
>> >
>> > On Thu, Feb 21, 2013 at 6:03 PM, Johnny Zhang <[EMAIL PROTECTED]>
>> > wrote:
>> >
>> > > Hi, Jeff Yuan:
>> > >
>> > > On Thu, Feb 21, 2013 at 5:53 PM, Jeff Yuan <[EMAIL PROTECTED]>
>> > wrote:
>> > >
>> > >> Hi,
>> > >>
>> > >> I am new to the pig community, and have a couple of questions
>> > >> regarding loader/storers.  Because I am writing code that closely
>> > >> couples with Pig, I thought I'd ask on the dev mailing list, but
>> > >> please let me know if this is more appropriate for the user list.
>> > >>
>> > >> 1) Is there a way to set the default pig loader as something other
>> > >> than PigStorage via configuration? What I mean is, by default if a
>> > >> loader is not specified, PigStorage is assumed. Can I change things
>> so
>> > >> that if no loader is specified in the load statement, another custom
>> > >> loader is used?
>> > >>
>> > > I am not sure if there is another way, but you can edit "
>> > > pig.load.default.statements=" in pig.properties file. So in your Pig
>> > > script you don't have to write load statement, but Pig will always
>> load
>> > it
>> > > for you (of course with the loader you specified)
>> > >
>> > >>
>> > >> 2) Is there a way to output the entire query result to stdout? Is the
>> > >> easiest way to do so by writing a custom storer that doesn't actually
>> > >> store to a file but instead just output to stdout?
>> > >>
>> > > can you try 'DUMP' ?
>> > >
>> > >>
>> > >> If no specific answer is available, advice on where in the pig code I
>> > >> should look to discover answers for myself would also be highly
>> > >> appreciated.
>> > >>
>> > >> Thanks,
>> > >> Jeff
>> > >>
>> > >
>> > > Johnny
>> > >
>> >
>>
>>
>>
>> --
>> "...:::Aniket:::... Quetzalco@tl"
>>
>
>