mapreduce: don't use broadcast when only dealing with a single arg. #732
| Job | Run time |
|---|---|
| 19m 8s | |
| 7m 30s | |
| 1m 0s | |
| 11m 51s | |
| 8m 35s | |
| 11m 5s | |
| 15m 32s | |
| 12m 3s | |
| 10m 56s | |
| 17m 53s | |
| 13m 50s | |
| 2h 9m 23s |
| Job | Run time |
|---|---|
| 19m 8s | |
| 7m 30s | |
| 1m 0s | |
| 11m 51s | |
| 8m 35s | |
| 11m 5s | |
| 15m 32s | |
| 12m 3s | |
| 10m 56s | |
| 17m 53s | |
| 13m 50s | |
| 2h 9m 23s |