"github.com/minio/minio/internal/crypto"
	"github.com/minio/minio/internal/hash/sha256"
	xhttp "github.com/minio/minio/internal/http"
	"github.com/minio/pkg/v3/sync/errgroup"
)

// Object was stored with additional erasure codes due to degraded system at upload time
const minIOErasureUpgraded = "x-minio-internal-erasure-upgraded"

const erasureAlgorithm = "rs-vandermonde"

// GetChecksumInfo - get checksum of a part.

	opReadRune2 readOp = 2  // Read rune of size 2.
	opReadRune3 readOp = 3  // Read rune of size 3.
	opReadRune4 readOp = 4  // Read rune of size 4.
)

// ErrTooLarge is passed to panic if memory cannot be allocated to store data in a buffer.
var ErrTooLarge = errors.New("bytes.Buffer: too large")
var errNegativeRead = errors.New("bytes.Buffer: reader returned negative count from Read")

const maxInt = int(^uint(0) >> 1)

 * Null row keys, columns keys, and values are not supported.
 *
 * <p>Lookups by row key are often faster than lookups by column key, because the data is stored in
 * a {@code Map<R, Map<C, V>>}. A method call like {@code column(columnKey).get(rowKey)} still runs
 * quickly, since the row key is provided. However, {@code column(columnKey).size()} takes longer,

    * API fields previously capable of storing and returning either `[]` and `null` via JSON API requests (for example, the Endpoints `subsets` field) can now store only `null` when created using the protobuf content-type or stored in etcd using protobuf serialization (the default in 1.6+). JSON API clients should tolerate `null` values for such fields, and treat `null` and `[]` as equivalent in meaning unless specifically documented otherwise...

  public static byte[] toByteArray(char value) {
    return new byte[] {(byte) (value >> 8), (byte) value};
  }

  /**
   * Returns the {@code char} value whose big-endian representation is stored in the first 2 bytes
   * of {@code bytes}; equivalent to {@code ByteBuffer.wrap(bytes).getChar()}. For example, the
   * input byte array {@code {0x54, 0x32}} would yield the {@code char} value {@code '\\u5432'}.
   *

    }

    @Override
    public void setUp() throws Exception {
        super.setUp();
        execJob = new TestExecJob();
        tempDir = Files.createTempDirectory("execjob_test").toFile();

        // Store original helpers
        originalSystemHelper = ComponentUtil.hasComponent("systemHelper") ? ComponentUtil.getSystemHelper() : null;

        level = Config.getInt("jcifs.smb1.util.loglevel", -1);
        if (level != -1) {
            LogStream.setLevel(level);
        }
        if (LogStream.level > 2) {
            try {
                Config.store(log, "JCIFS PROPERTIES");
            } catch (final IOException ioe) {}
        }
    }

    /**
     * Handles file download requests for SMB files.
     * @param req the HTTP servlet request

			}
		}
		z.serverPools[0].erasureDisksMu.Lock()
		xl.getDisks = func() []StorageAPI {
			return erasureDisks
		}
		z.serverPools[0].erasureDisksMu.Unlock()
		// Fetch object from store.
		gr, err := xl.GetObjectNInfo(ctx, bucket, object, nil, nil, opts)
		if err != nil {
			if err != toObjectErr(errErasureReadQuorum, bucket, object) {

### Multiple Processes - Workers { #multiple-processes-workers }

If you have more clients than what a single process can handle (for example if the virtual machine is not too big) and you have **multiple cores** in the server's CPU, then you could have **multiple processes** running with the same application at the same time, and distribute all the requests among them.

	if meta.Format != formatBackendErasure && meta.Format != formatBackendErasureSingle {
		return "", fmt.Errorf(`found backend type %s, expected %s or %s - to migrate to a supported backend visit https://docs.min.io/community/minio-object-store/operations/deployments/baremetal-migrate-fs-gateway.html`, meta.Format, formatBackendErasure, formatBackendErasureSingle)
	}
	// Erasure backend found, proceed to detect version.
	format := &formatErasureVersionDetect{}