```
./bin/spark-submit --class org.apache.spark.examples.SparkPi \
    --master yarn-client \
    --num-executors 1 \
    --driver-memory 512m \
    --executor-memory 512m \
    --executor-cores 1 \
    examples/jars/spark-examples*.jar 10
```

The job should produce an output as shown below. Note the value of pi in the output.

```

streaming compression due to its stability and performance.

This algorithm is specifically optimized for machine generated content.
Write throughput is typically at least 500MB/s per CPU core,
and scales with the number of available CPU cores.
Decompression speed is typically at least 1GB/s.

This means that in cases where raw IO is below these numbers
compression will not only reduce disk usage but also help increase system throughput.

		for i := range cpus {
			cpuMap[cpus[i].PhysicalID] = struct{}{}
			coreMap[cpus[i].CoreID] = struct{}{}
		}
		cpu := cpus[0]
		uaAppend(" CPU ", fmt.Sprintf("(total_cpus:%d, total_cores:%d; vendor:%s; family:%s; model:%s; stepping:%d; model_name:%s)",
			len(cpuMap), len(coreMap), cpu.VendorID, cpu.Family, cpu.Model, cpu.Stepping, cpu.ModelName))
	}
	uaAppend(")", "")

`max_sleep` to a *lower* value and setting `max_io` to a *higher* value would make heal go faster.

Each node is responsible of healing its local drives; Each drive will have multiple heal workers which is the quarter of the number of CPU cores of the node or the quarter of the configured nr_requests of the drive (https://www.kernel.org/doc/Documentation/block/queue-sysfs.txt). It is also possible to provide a custom number of workers by using this command: `mc admin config set alias/ heal...

2021602 E BX46 Parkchester 3709 2106 284 2 Bronx 028400 2028400 E BX37 Van Nest-Morris Park-Westchester Square 3704 3389497 2 2014-03-15 16:46:28 2014-03-15 16:54:39 N 1 -73.860969543457031 40.833728790283203 -73.851020812988281 40.850376129150391 1 1.76 8.5 0 0.5 3 0 12 1 1 182 242 green 0.00 0.0 0.0 58 42 8.95 1306 216.02 2 Bronx 021602 2021602 E BX46 Parkchester 3709 486 286 2 Bronx 028600 2028600 I BX37 Van Nest-Morris Park-Westchester Square 3704 3389498 2 2014-03-03 21:23:08 2014-03-03 21:34:43...