Affects Version/s: 0.98.0, 0.96.0
Fix Version/s: 0.99.0
Release Note:The location prefetch features is removed from the code. The related interfaces are kept for backward compatibility, but do nothing.
Issues with prefetching are:
- we do two calls to meta: one for the exact row, one for the prefetch
- it's done in a lock
- we take the next 10 regions. Why 10, why the 10 next?
- is it useful if the table has 100K regions?
- just remove it
- replace it with a reverse scan: this would save a call