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[SYSTEMDS-3935] Fix OOC CSV reblock execution type selection#2385

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lumos07 wants to merge 1 commit intoapache:mainfrom
lumos07:test/SYSTEMDS-3935-ooc-csv-reblock
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[SYSTEMDS-3935] Fix OOC CSV reblock execution type selection#2385
lumos07 wants to merge 1 commit intoapache:mainfrom
lumos07:test/SYSTEMDS-3935-ooc-csv-reblock

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@lumos07 lumos07 commented Dec 15, 2025

What changed

Fixes execution type propagation in Hop.constructAndSetReblockLopIfRequired to ensure
CSV reblock is correctly constructed and executed under Out-Of-Core (OOC) mode.

Why

Previously, CSV reblock could be skipped or assigned an incorrect execution type when
running with -ooc, leading to runtime NotImplementedException during CSV reads.

How it was tested

  • Ran CSV read + aggregation under -ooc mode
  • Verified ooc_csvrblk appears in heavy hitter statistics
  • Confirmed successful execution without runtime errors

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