//         greaterThan: 1MiB # match objects with size greater than this value (e.g. 1MiB)
//       purge:
//           # retainVersions: 0 # (default) delete all versions of the object. This option is the fastest.
//           # retainVersions: 5 # keep the latest 5 versions of the object.
//
//     - type: deleted # objects with delete marker as their latest version

	}

	// Help provides help for config values
	Help = config.HelpKVS{
		config.HelpKV{
			Key:         Speed,
			Description: `customize scanner speed (default|slowest|slow|fast|fastest)` + defaultHelpPostfix(Speed),
			Optional:    true,
			Type:        "string",
		},
		config.HelpKV{
			Key:         ExcessVersions,

			if err = lookupDeprecatedScannerConfig(kvs, &cfg); err != nil {
				return cfg, err
			}
		}
	}

	switch speed := env.Get(EnvSpeed, kvs.GetWithDefault(Speed, DefaultKVS)); speed {
	case "fastest":
		cfg.Delay, cfg.MaxWait, cfg.Cycle = 0, 0, time.Second
	case "fast":
		cfg.Delay, cfg.MaxWait, cfg.Cycle = 1, 100*time.Millisecond, time.Minute
	case "default":

It was found that the directory staging committer was the fastest among the three, S3A connector should be configured with the following parameters for optimal results:

```
cat ${HADOOP_CONF_DIR}/core-site.xml | kv-pairify | grep "s3a"

fs.s3a.access.key=minio

        greaterThan: 1MiB # match objects with size greater than this value (e.g. 1MiB)
      purge:
          # retainVersions: 0 # (default) delete all versions of the object. This option is the fastest.
          # retainVersions: 5 # keep the latest 5 versions of the object.
  
    - type: deleted # objects with delete marker as their latest version
      name: NAME # match object names that satisfy the wildcard expression.

pkill minio
rm -rf /tmp/xl
rm -rf /tmp/xltier

if [ ! -f ./mc ]; then
	wget --quiet -O mc https://dl.minio.io/client/mc/release/linux-amd64/mc &&
		chmod +x mc
fi

export CI=true
export MINIO_SCANNER_SPEED=fastest

(minio server http://localhost:9000/tmp/xl/{1...10}/disk{0...1} 2>&1 >/tmp/decom.log) &
pid=$!

sleep 30

export MC_HOST_myminio="http://minioadmin:minioadmin@localhost:9000/"