[do not merge] Revert "Allocation free DataBlockCache lookups"

[richardstartin]

Reverts #8140

[codecov-commenter]

Codecov Report

Merging #8178 (c15bf3e) into master (5fa4737) will decrease coverage by 57.24%.
The diff coverage is 0.00%.

@@              Coverage Diff              @@
##             master    #8178       +/-   ##
=============================================
- Coverage     71.41%   14.17%   -57.25%     
+ Complexity     4302       81     -4221     
=============================================
  Files          1623     1578       -45     
  Lines         84312    82443     -1869     
  Branches      12639    12435      -204     
=============================================
- Hits          60213    11684    -48529     
- Misses        19974    69892    +49918     
+ Partials       4125      867     -3258     

Flag	Coverage Δ
integration1	?
integration2	?
unittests1	?
unittests2	14.17% <0.00%> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...a/org/apache/pinot/core/common/DataBlockCache.java	0.00% <0.00%> (-92.15%)	⬇️
...ain/java/org/apache/pinot/core/data/table/Key.java	0.00% <0.00%> (-100.00%)	⬇️
.../java/org/apache/pinot/spi/utils/BooleanUtils.java	0.00% <0.00%> (-100.00%)	⬇️
.../java/org/apache/pinot/core/data/table/Record.java	0.00% <0.00%> (-100.00%)	⬇️
.../java/org/apache/pinot/core/util/GroupByUtils.java	0.00% <0.00%> (-100.00%)	⬇️
...ava/org/apache/pinot/spi/config/table/FSTType.java	0.00% <0.00%> (-100.00%)	⬇️
...ava/org/apache/pinot/spi/data/MetricFieldSpec.java	0.00% <0.00%> (-100.00%)	⬇️
...va/org/apache/pinot/spi/utils/BigDecimalUtils.java	0.00% <0.00%> (-100.00%)	⬇️
...java/org/apache/pinot/common/tier/TierFactory.java	0.00% <0.00%> (-100.00%)	⬇️
...java/org/apache/pinot/common/utils/StringUtil.java	0.00% <0.00%> (-100.00%)	⬇️
... and 1293 more

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