{"id":"combiner-output-indistinguishable-from-mapper-output","text":"The reducer reads combiner output from intermediate JSON files identically to raw mapper output, with no metadata distinguishing pre-aggregated values from raw emitted pairs","truth_value":"IN","source":"entries/2026/05/29/topic-combiner-correctness.md","source_url":"","source_hash":"","justifications":[],"dependents":[],"metadata":{},"explanation":{"steps":[{"node":"combiner-output-indistinguishable-from-mapper-output","truth_value":"IN","reason":"premise"}]}}