},
				Erasure: struct {
					Version          string     `json:"version"`
					This             string     `json:"this"`
					Sets             [][]string `json:"sets"`
					DistributionAlgo string     `json:"distributionAlgo"`
				}{
					Version: "2",
				},
			},
			false,
		},
		// Invalid Erasure format "Unknown".
		{
			&formatErasureV3{
				formatMetaV1: formatMetaV1{

		Sets [][]string `json:"sets"`
		// Distribution algorithm represents the hashing algorithm
		// to pick the right set index for an object.
		DistributionAlgo string `json:"distributionAlgo"`
	} `json:"xl"`
}

// formatErasureV3 struct is same as formatErasureV2 struct except that formatErasureV3.Erasure.Version is "3" indicating

		endpointStrings:    endpointStrings,
		setCount:           setCount,
		setDriveCount:      setDriveCount,
		defaultParityCount: defaultParityCount,
		format:             format,
		distributionAlgo:   format.Erasure.DistributionAlgo,
		deploymentID:       uuid.MustParse(format.ID),
		poolIndex:          poolIdx,
	}

	mutex := newNSLock(globalIsDistErasure)

	for i := range setCount {

func TestHashedLayer(t *testing.T) {
	// Test distribution with 16 sets.
	var objs [16]*erasureObjects
	for i := range objs {
		objs[i] = &erasureObjects{}
	}

	sets := &erasureSets{sets: objs[:], distributionAlgo: "CRCMOD"}

	testCases := []struct {
		objectName  string
		expectedObj *erasureObjects
	}{
		// cases which should pass the test.
		// passing in valid object name.
		{"object", objs[12]},

		return nil, "", err
	}

	disk := newXLStorageDiskIDCheck(storage, false)
	disk.SetDiskID("da017d62-70e3-45f1-8a1a-587707e69ad1")
	return disk, diskPath, nil
}

)

type erasureServerPools struct {
	poolMetaMutex sync.RWMutex
	poolMeta      poolMeta

	rebalMu   sync.RWMutex
	rebalMeta *rebalanceMeta

	deploymentID     [16]byte
	distributionAlgo string

	serverPools []*erasureSets

	// Active decommission canceler
	decommissionCancelers []context.CancelFunc

	s3Peer *S3PeerSys

	mpCache *xsync.MapOf[string, MultipartInfo]
}