asterix-app/src/test/resources/optimizerts/results/btree-index/btree-secondary-45.plan

-- SINK_WRITE  |PARTITIONED|
  -- RANDOM_MERGE_EXCHANGE  |PARTITIONED|
    -- STREAM_PROJECT  |PARTITIONED|
      -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
        -- BTREE_SEARCH  |PARTITIONED|
          -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
            -- STABLE_SORT [$$20(ASC)]  |PARTITIONED|
              -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                -- STREAM_PROJECT  |PARTITIONED|
                  -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                    -- BTREE_SEARCH  |PARTITIONED|
                      -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
                        -- ASSIGN  |PARTITIONED|
                          -- EMPTY_TUPLE_SOURCE  |PARTITIONED|