Rework merge task for both compactor and indexer merge flows#6464

nadav-govari wants to merge 4 commits into

nadav/merge-feature-split-mergesquickwit-oss/quickwit:nadav/merge-feature-split-mergesfrom

nadav/fix-merge-operationquickwit-oss/quickwit:nadav/fix-merge-operationCopy head branch name to clipboard