Add exponential backoff to scenario for Teradata
Reducing lab shelf accessed on trans. fetches

- We access lab shelf at a unit of batch
Fixing robustness in Teradata
Revert 862fec5..f275364

This rolls back to commit 862fec55fee28c3cd1d03ea8fee16c710a4025fb.
Multithreading for Teradata
Adding debugging messages
Teradata run has been optimizing

- Check if connection creation takes forever.
build script for thrashing code on teradata
Revert fee765a..79bfd05

This rolls back to commit fee765add46ca77d86d250e62710b32c0c6b1744.
No more changes to the code

- Ant script for Teradata has been added.
Revert 79bfd05..7ab23a4

This rolls back to commit 79bfd056690847254e10bdc63fc69bcaac647db9.
Finalized code for Teradata
Adding pause routine in the finalized code
Adding debugging message
Ant script modified
Hotspot ratio modified