Hi,
The issue of nested types addressed recently through JIRA HIVE-603
is very useful. But I have an issue with the schema specification.
I have a table page_views with two columns - page_info is a map
with key delimiter as Ctrl-D and the key-value pair (record) delimiter as
Ctrl-C and page_links is a list of maps with each list item separated using
Ctrl-B, map delimiters being Ctrl-D and Ctrl-C as mentioned above.
In the DDL statement, if I do not specify "collection items
terminated by" and "array items terminated by" clauses, page_links is
deserialized properly, but page_info is not deserialized properly. If I specify
the clauses - collection items terminated by '\003' and map keys terminated by
'\004', page_info is deserialized properly but page_links is not deserialized
properly. The reason I think is that in page_links it considers '\003' or
Ctrl-C as delimiter for both array and map record. But I have Ctrl-B as array
delimiter and Ctrl-D as map record delimiter.
I think we should replace the clause "collection items terminated
by" with separate clauses like "list items terminated by" and "map items
terminated by".
Thanks,
Rakesh
