I am missing something:
The mapping is:
small table alias -> big file table name -> list of small table file names
Shouldn't the big table file name and the small table file names be fully qualified ?
In the above example, bigtable file name is srcbucket20.txt and ds=2008-04-09/srcbucket20.txt. Why is it sometimes qualified by partition name and sometimes not ?
Similarly, shouldn't the small table file name be fully qualified ?