FENNEL:  more work on large-file test
FENNEL:  more work on large-file test

[git-p4: depot-paths = "//open/lu/dev/": change = 5404]

LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb,LucidDB/luciddb