Subnet Health

Subnet Health diagnostics help ensure that the underlying infrastructure that runs MinIO is configured correctly, and is functioning properly. This test is one-shot long running one, that is recommended to be run as soon as the cluster is first provisioned, and each time a failure scenario is encountered. Note that the test incurs majority of the available resources on the system. Care must be taken when using this to debug failure scenario, so as to prevent larger outages. Health...

## Run Standalone MinIO on Docker

*Note*: Standalone MinIO is intended for early development and evaluation. For production clusters, deploy a [Distributed](https://docs.min.io/community/minio-object-store/operations/deployments/baremetal-deploy-minio-as-a-container.html) MinIO deployment.

## Sample `POST` Request

```

## Enabling Parquet Format

Parquet is DISABLED by default since hostile crafted input can easily crash the server.

If you are in a controlled environment where it is safe to assume no hostile content can be uploaded to your cluster you can safely enable Parquet.
To enable Parquet set the environment variable `MINIO_API_SELECT_PARQUET=on`.

## Example using Python API

### 1. Prerequisites

	LastFailedCount uint64 `json:"failedCount_last5min"`
	// Count of unreplicated entries that were dropped after MRF retry limit reached since cluster start.
	TotalDroppedCount uint64 `json:"droppedCount_since_uptime"`
	// Bytes of unreplicated entries that were dropped after MRF retry limit reached since cluster start.
	TotalDroppedBytes uint64 `json:"droppedBytes_since_uptime"`
}

// SMA struct for calculating simple moving average

        @Test
        @DisplayName("Should handle typical Windows NTFS configuration")
        void shouldHandleTypicalNTFSConfiguration() throws SMBProtocolDecodingException {
            // Given - typical NTFS: 4KB clusters (8 sectors * 512 bytes)
            long totalClusters = 26214400L; // 100GB / 4KB
            long freeClusters = 13107200L; // 50GB / 4KB

            ByteBuffer buffer = ByteBuffer.allocate(24);

	ObjectsTotalSize uint64                           `json:"objectsTotalSize"`
	ReplicationInfo  map[string]BucketTargetUsageInfo `json:"objectsReplicationInfo"`

	// Total number of buckets in this cluster
	BucketsCount uint64 `json:"bucketsCount"`

	// Buckets usage info provides following information across all buckets
	// - total size of the bucket
	// - total objects in a bucket
	// - object size histogram per bucket

shred -s 500M /tmp/data/custpartsize
echo "done"

# Add replication site
./mc admin replicate add minio1 minio2 --insecure
# sleep for replication to complete
sleep 30

# Create bucket in source cluster
echo "Create bucket in source MinIO instance"
./mc mb minio1/test-bucket --insecure

# Load objects to source site
echo "Loading objects to source MinIO instance"
set -x

	if err := globalIAMSys.DeletePolicy(ctx, policyName, true); err != nil {
		writeErrorResponseJSON(ctx, w, toAdminAPIErr(ctx, err), r.URL)
		return
	}

	// Call cluster-replication policy creation hook to replicate policy deletion to
	// other minio clusters.
	replLogIf(ctx, globalSiteReplicationSys.IAMChangeHook(ctx, madmin.SRIAMItem{
		Type:      madmin.SRIAMItemPolicy,
		Name:      policyName,
		UpdatedAt: UTCNow(),

import jcifs.internal.witness.WitnessRegistration.WitnessRegistrationState;

/**
 * SMB Witness Protocol client implementation as defined in MS-SWN specification.
 * Manages witness registrations, notifications, and heartbeats for cluster failover support.
 */
public class WitnessClient implements AutoCloseable {
    private static final Logger log = LoggerFactory.getLogger(WitnessClient.class);

    // Polling and backoff constants (in ms)