On Thu, Mar 28, 2013 at 11:08 PM, Jagat Singh wrote:
> Hello Owen,
>
> Thanks for your reply.
>
> I am seeing its providing the advantage which Avro provided , of adding
> and removing fields.
>
ORC files like Avro files are self-describing. They include the type
structure of the records in the
Hello Owen,
Thanks for your reply.
I am seeing its providing the advantage which Avro provided , of adding and
removing fields.
Can you please write some sample code for hive table which is partitioned
and each partitioned has different schema.
I tried searching but could not find any example.
Actually, Hive already has the ability to have different schemas for
different partitions. (Although of course it would be nice to have the
alter table be more flexible!)
The "versioned metadata" means that the ORC file's metadata is stored in
ProtoBufs so that we can add (or remove) fields to the
I could just find this link
http://docs.hortonworks.com/HDPDocuments/HDP2/HDP-2.0.0.2/ds_Hive/orcfile.html
according to this, the metadata is handled by protobuf which allows of
adding/removing fields.
On Fri, Mar 29, 2013 at 10:55 AM, Jagat Singh wrote:
> Hello Nitin,
>
> Thanks for sharing.
Hello Nitin,
Thanks for sharing.
Do we have more details on
Versioned metadata feature of ORC ? , is it like handling varying schemas
in Hive?
Regards,
Jagat Singh
On Fri, Mar 29, 2013 at 4:16 PM, Nitin Pawar wrote:
>
> Hi,
>
> Here is is a nice presentation from Owen from Hortonworks on "O
