asterix-app/src/test/resources/optimizerts/results/prim-idx-search-open.plan

-- SINK_WRITE  |PARTITIONED|
  -- RANDOM_MERGE_EXCHANGE  |PARTITIONED|
    -- STREAM_PROJECT  |PARTITIONED|
      -- ASSIGN  |PARTITIONED|
        -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
          -- BTREE_SEARCH  |PARTITIONED|
            -- ONE_TO_ONE_EXCHANGE  |PARTITIONED|
              -- ASSIGN  |PARTITIONED|
                -- EMPTY_TUPLE_SOURCE  |PARTITIONED|