…more readable and concise (apache#16732)

Changes:
- No functional change
- Add class `TuningConfigBuilder` to build `IndexTuningConfig`, `CompactionTuningConfig`
- Remove old class `ParallelIndexTestingFactory.TuningConfigBuilder`
- Remove some unused fields and methods

…ache#16667)

Do not kill segments with referenced load specs from deep storage

…e types when reading from spilled files and cached results (apache#16620)

Like apache#16511, but for keys that have been spilled or cached during the grouping process

Add ability to query entirely cold datasources.

* When an ArrayList RAC creates a child RAC, the start and end offsets need to have the offset of parent's start offset
* Defaults the 2nd window bound to CURRENT ROW when only a single bound is specified
* Removes the windowingStrictValidation warning and throws a hard exception when Order By alongside RANGE clause is not provided with UNBOUNDED or CURRENT ROW as both bounds

…16734)

…6711)

…t_iterator