Thanks Navis.
The problem is that the key and value are custom classes. e.g, key is class
A, and value is class B. we want to show certain data in Class A and B from
getters. so we do need a SerDe to deserialize the data.
Since SerDe interface can only pass one parameter, so I need to write a
InputFormat to combine key and value to one object, right?
public Object deserialize(Writable arg0) throws SerDeException {
Daning
On Mon, Jul 9, 2012 at 4:56 PM, Navis류승우 <navis....@nexr.com> wrote:
> You can try 'STORED AS SEQUENCEFILE' when creating table.
>
>
> https://cwiki.apache.org/Hive/languagemanual-ddl.html#LanguageManualDDL-Create%252FDropTable
>
>
> 2012/7/10 Daning Wang <dan...@netseer.com>
>
>> Hi all,
>>
>> New to here. I have sequence files and I want to read in Hive, I did
>> some search on the net. looks the way I need to do
>>
>> 1. Write new FileInputFormat so Hive can read both key and value.
>> (ref http://osdir.com/ml/hive-user-hadoop-apache/2009-10/msg00034.html)
>>
>> 2. Write a SerDe to deserialize custom class data for key and value in
>> sequence file, I don't need serialize.
>>
>> Is this the right way to do? any simple way to do this?
>>
>> Thanks,
>>
>> Daning
>>
>
>
