Enum MetricEvent 

pub enum MetricEvent {
    LogSegmentLoaded {
        operation_id: MetricId,
        duration: Duration,
        num_commit_files: u64,
        num_checkpoint_files: u64,
        num_compaction_files: u64,
    },
    ProtocolMetadataLoaded {
        operation_id: MetricId,
        duration: Duration,
    },
    SnapshotCompleted {
        operation_id: MetricId,
        version: u64,
        total_duration: Duration,
    },
    SnapshotFailed {
        operation_id: MetricId,
        duration: Duration,
    },
    StorageListCompleted {
        duration: Duration,
        num_files: u64,
    },
    StorageReadCompleted {
        duration: Duration,
        num_files: u64,
        bytes_read: u64,
    },
    StorageCopyCompleted {
        duration: Duration,
    },
}

Metric events emitted during Delta Kernel operations.

Some events include an operation_id (MetricId) that uniquely identifies the operation instance. This allows correlating multiple events from the same operation.

Variants

LogSegmentLoaded

Log segment loading completed (listing and organizing log files).

Fields

operation_id: MetricId

duration: Duration

num_commit_files: u64

num_checkpoint_files: u64

num_compaction_files: u64

ProtocolMetadataLoaded

Protocol and metadata loading completed.

Fields

operation_id: MetricId

duration: Duration

SnapshotCompleted

Snapshot creation completed successfully.

Fields

operation_id: MetricId

version: u64

total_duration: Duration

SnapshotFailed

Snapshot creation failed.

Fields

operation_id: MetricId

duration: Duration

StorageListCompleted

Storage list operation completed. These events track storage-level latencies and are emitted automatically by the default storage handler implementation.

Fields

duration: Duration

num_files: u64

StorageReadCompleted

Storage read operation completed.

Fields

duration: Duration

num_files: u64

bytes_read: u64

StorageCopyCompleted

Storage copy operation completed.

Fields

duration: Duration

Trait Implementations

impl Clone for MetricEvent

fn clone(&self) -> MetricEvent

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MetricEvent

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for MetricEvent

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.