|
|
@ -136,8 +136,8 @@ class FilePicker { |
|
|
|
|
|
|
|
|
|
|
|
// Do key range filtering of files or/and fractional cascading if:
|
|
|
|
// Do key range filtering of files or/and fractional cascading if:
|
|
|
|
// (1) not all the files are in level 0, or
|
|
|
|
// (1) not all the files are in level 0, or
|
|
|
|
// (2) there are more than 3 Level 0 files
|
|
|
|
// (2) there are more than 3 current level files
|
|
|
|
// If there are only 3 or less level 0 files in the system, we skip
|
|
|
|
// If there are only 3 or less current level files in the system, we skip
|
|
|
|
// the key range filtering. In this case, more likely, the system is
|
|
|
|
// the key range filtering. In this case, more likely, the system is
|
|
|
|
// highly tuned to minimize number of tables queried by each query,
|
|
|
|
// highly tuned to minimize number of tables queried by each query,
|
|
|
|
// so it is unlikely that key range filtering is more efficient than
|
|
|
|
// so it is unlikely that key range filtering is more efficient than
|
|
|
|