Hi,
I've been looking over the db schema that hive uses to store it's
metadata (package.jdo) and I had some questions:
1. What do the field names in the TYPES table mean? TYPE1, TYPE2,
and TYPE_FIELDS are all unclear to me.
2. In the TBLS (tables) table, what is sd?
3. What does the SERDES table store?
4. What does the SORT_ORDER table store? It appears to describe the
ordering within a storage descriptor, which in turn appears to be
related to a partition. Do you envision having a table where different
partitions have different orders?
5. SDS (storage descriptor) table has a list of columns. Does this
imply that columnar storage is supported?
6. What is the relationship between a storage descriptor and a
partition? 1-1, 1-n?
Thanks.
Alan.
