--------------------------------------------
----------------level = 0, layer_index = 0, layer_sequence = 0, extent_count = 0-------------
-----------------------------------------------------------
----------------level = 1, layer_index = 0, layer_sequence = 0, extent_count = 4-------------
data size7115num entries50num data blocks1
50
   value[0]: smallest key:[0000000100], largest_key:[0000000149], extent_id[1, 0]
data size7115num entries50num data blocks1
50
   value[1]: smallest key:[0000000150], largest_key:[0000000199], extent_id[3, 0]
data size7115num entries50num data blocks1
50
   value[2]: smallest key:[0000000200], largest_key:[0000000249], extent_id[5, 0]
data size7115num entries50num data blocks1
50
   value[3]: smallest key:[0000000250], largest_key:[0000000299], extent_id[7, 0]
-----------------------------------------------------------
----------------level = 2, layer_index = 0, layer_sequence = 0, extent_count = 4-------------
data size7116num entries50num data blocks1
50
   value[4]: smallest key:[0000000125], largest_key:[0000000174], extent_id[2, 0]
data size7117num entries50num data blocks1
50
   value[5]: smallest key:[0000000175], largest_key:[0000000224], extent_id[4, 0]
data size7116num entries50num data blocks1
50
   value[6]: smallest key:[0000000225], largest_key:[0000000274], extent_id[6, 0]
data size7117num entries50num data blocks1
50
   value[7]: smallest key:[0000000275], largest_key:[0000000324], extent_id[8, 0]
-----------------------------------------------------------


after code compaction

--------------------------------------------
----------------level = 0, layer_index = 0, layer_sequence = 0, extent_count = 0-------------
-----------------------------------------------------------
----------------level = 1, layer_index = 0, layer_sequence = 0, extent_count = 1-------------
data size15915num entries112num data blocks1
112
   value[0]: smallest key:[0000000101], largest_key:[0000000323], extent_id[10, 0]
-----------------------------------------------------------
----------------level = 2, layer_index = 0, layer_sequence = 0, extent_count = 1-------------
data size16069num entries113num data blocks1
113
   value[1]: smallest key:[0000000100], largest_key:[0000000324], extent_id[9, 0]
-----------------------------------------------------------