### <a href="https://marshmallow.readthedocs.io/en/stable/" class="external-link" target="_blank">Marshmallow</a> { #marshmallow }

// SRStateEdit - PUT /minio/admin/v3/site-replication/state/edit
//
// used internally to tell current cluster to update site replication state
func (a adminAPIHandlers) SRStateEdit(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()

	objectAPI, _ := validateAdminReq(ctx, w, r, policy.SiteReplicationOperationAction)
	if objectAPI == nil {
		return
	}

	var state madmin.SRStateEditReq

* [stable] Support Attach and Detach operations for ReadWriteOnce (RWO) volumes that use iSCSI and Fibre Channel plugins.

* [stable] Expose storage usage metrics

  * The available capacity of a given Persistent Volume (PV) is available by calling the Kubernetes metrics API.

* [stable] Volume plugin metrics

### Volumes
* **[stable]** StorageClass API is promoted to v1 (storage.k8s.io/v1).
* **[stable]** Default storage classes are deployed during installation on Azure, AWS, GCE, OpenStack and vSphere.
* **[stable]** Added ability to populate environment variables from a configmap or secret.

      return this;
    }

    /**
     * Configures this {@code Builder} to order entries by value according to the specified
     * comparator.
     *
     * <p>The sort order is stable, that is, if two entries have values that compare as equivalent,
     * the entry that was inserted first will be first in the built map's iteration order.
     *

  - [Deployment based on Kubernetes](https://docs.min.io/community/minio-object-store/operations/deployments/kubernetes.html)
  - [Deployment based on MinIO Helm Chart](https://github.com/helm/charts/tree/master/stable/minio)

## **3. Configure Hadoop, Spark, Hive to use MinIO**

- Promoted `NodeInclusionPolicyInPodTopologySpread` to Stable in v1.33 ([#130920](https://github.com/kubernetes/kubernetes/pull/130920), [@kerthcet](https://github.com/kerthcet)) [SIG Apps, Node, Scheduling and Testing]

- Graduating `pending_pods`, `preemption_attempts_total`, `preemption_victims` and `schedule_attempts_total` metrics to stable. Also `e2e_scheduling_duration_seconds` is renamed to `scheduling_attempt_duration_seconds` and the latter is graduated to stable. (#105941, @rezakrimi) [SIG Instrumentation, Scheduling and Testing]

_2020-04-06_

**This release fixes a severe bug where OkHttp incorrectly detected and recovered from unhealthy
connections.** Stale or canceled connections were incorrectly attempted when they shouldn't have
been, leading to rare cases of infinite retries. Please upgrade to this release!

 *  Fix: don't return stale DNS entries in `DnsOverHttps`. We were caching DNS results indefinitely

### Documentation

- Azure file migration graduates to beta, with CSIMigrationAzureFile flag off by default
  as it requires installation of AzureFile CSI Driver. Users should enable CSIMigration and