[BugFix] Handle NOT NULL -> nullable flat-JSON columns in compaction read path (fix JsonMergeIterator CHECK crash) (backport #75680)#75749

kevincai merged 1 commit into

StarRocks:branch-4.0StarRocks/starrocks:branch-4.0from

srihithg:backport-75680-branch-4.0srihithg/starrocks:backport-75680-branch-4.0Copy head branch name to clipboard