[SYSTEMDS-3934] ooc eviction manager configurable partitions for spooling

[j143]

At present, adds the scaffold to introduce configurable partitions. For now,it does write only one block at a time.

[j143]

Hi @mboehm7 , I have implemented for writing to partitions at once instead of each block at a time.

this is an overkill for a simple LRU/FIFO, but with prescient policy in mind - I've arrived at this design.

next timeline:
1/ I'll wrap up till this for my report presentation, in my report. (7th to 11th November)
2/ after this report presentation - I have a week, during which I'll run the experiments to present results in the viva (20th to 30th November)

[codecov]

Codecov Report

❌ Patch coverage is 75.64103% with 38 lines in your changes missing coverage. Please review.
✅ Project coverage is 72.26%. Comparing base (e40bbfe) to head (df7ba43).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
...s/runtime/instructions/ooc/OOCEvictionManager.java	76.12%	26 Missing and 11 partials ⚠️
...pache/sysds/runtime/util/PartitionFileManager.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #2350      +/-   ##
============================================
- Coverage     72.27%   72.26%   -0.01%     
+ Complexity    46754    46742      -12     
============================================
  Files          1504     1505       +1     
  Lines        177324   177440     +116     
  Branches      34842    34853      +11     
============================================
+ Hits         128162   128232      +70     
- Misses        39491    39522      +31     
- Partials       9671     9686      +15     

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[mboehm7]

LGTM - thanks for the patch @j143 - yes, writing out entire partitions was the plan after the initial eviction manager. The next steps also sound very good.