External partition table question

[Raymond Lau <rl...@ooyala.com>]

I've created an external table partitioned by a field and am attempting to
load in the data via the command 'ALTER TABLE partitioned_table_test ADD
PARTITION (pcode = '123') LOCATION '/path/to/parquet/files';' using a
custom Parquet SerDe.

Does loading in the data this way call the serializer() function in the
SerDe at all?

I've tried adding System.out.println statements in my deserializer and
serializer to debug and no output seems to come from the Serializer
function.

-- 
*Raymond Lau*
Software Engineer - Intern |
rlau@ooyala.com | (925) 395-3806

Re: External partition table question

[Lefty Leverenz <le...@gmail.com>]

Thanks for this clarification.  I've revised the Add Partitions section
<https://cwiki.apache.org/confluence/display/Hive/LanguageManual+DDL#LanguageManualDDL-AddPartitions>
in the wiki accordingly.

-- Lefty


On Fri, Jul 18, 2014 at 12:45 AM, Satish Mittal <sa...@inmobi.com>
wrote:

> 'ALTER TABLE .. ADD PARTITION..' would just a partition entry for the
> table in hive metastore. It doesn't perform any data loading, instead it
> expects the data to be loaded already in the file pointed to by LOCATION.
>
>
> On Tue, Jul 15, 2014 at 5:39 AM, Raymond Lau <rl...@ooyala.com> wrote:
>
>> I've created an external table partitioned by a field and am attempting
>> to load in the data via the command 'ALTER TABLE partitioned_table_test ADD
>> PARTITION (pcode = '123') LOCATION '/path/to/parquet/files';' using a
>> custom Parquet SerDe.
>>
>> Does loading in the data this way call the serializer() function in the
>> SerDe at all?
>>
>>  I've tried adding System.out.println statements in my deserializer and
>> serializer to debug and no output seems to come from the Serializer
>> function.
>>
>> --
>> *Raymond Lau*
>> Software Engineer - Intern |
>> rlau@ooyala.com | (925) 395-3806
>>
>
>
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Re: External partition table question

[Satish Mittal <sa...@inmobi.com>]

'ALTER TABLE .. ADD PARTITION..' would just a partition entry for the table
in hive metastore. It doesn't perform any data loading, instead it expects
the data to be loaded already in the file pointed to by LOCATION.


On Tue, Jul 15, 2014 at 5:39 AM, Raymond Lau <rl...@ooyala.com> wrote:

> I've created an external table partitioned by a field and am attempting to
> load in the data via the command 'ALTER TABLE partitioned_table_test ADD
> PARTITION (pcode = '123') LOCATION '/path/to/parquet/files';' using a
> custom Parquet SerDe.
>
> Does loading in the data this way call the serializer() function in the
> SerDe at all?
>
> I've tried adding System.out.println statements in my deserializer and
> serializer to debug and no output seems to come from the Serializer
> function.
>
> --
> *Raymond Lau*
> Software Engineer - Intern |
> rlau@ooyala.com | (925) 395-3806
>

-- 
_____________________________________________________________
The information contained in this communication is intended solely for the 
use of the individual or entity to whom it is addressed and others 
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information. If you are not the intended recipient you are hereby notified 
that any disclosure, copying, distribution or taking any action in reliance 
on the contents of this information is strictly prohibited and may be 
unlawful. If you have received this communication in error, please notify 
us immediately by responding to this email and then delete it from your 
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receipt.