use zone map optimize paging query #1541
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Task Description
close #1540
use Zone Map to optimize paging query.
This optimization can reduce the amount of data that needs to be sorted in paging query.
Solution Description
In memory, meta information (row count, maximum row, minimum row) is maintained for each dump file, and then the amount of data that needs to be read is reduced.
Passed Regressions
pass tests in ob repo
Upgrade Compatibility
This optimization is orthogonal to the implementation of Sort/Limit, so it's easy to integrate this optimization.
Release Note
This optimization speed up in ordered/semi-ordered scenarios.