When I was watching online-index-backfill.md, I found the third section, which is “3. Backfill the data”, it was mentioned that "After the index state is updated to DB_REORG, the YB-Master orchestrates the backfill process by issuing BackfillIndex() RPC calls to each tablet. This starts building the index across all the tablets of the table MyTable. ". the “YB master” in this sentence is the “YB master leader” ?
As shown in the figure: