Struct BlobMetadata

pub struct BlobMetadata {
    pub blob_type: String,
    pub input_fields: Vec<i32>,
    pub snapshot_id: i64,
    pub sequence_number: i64,
    pub offset: i64,
    pub length: i64,
    pub compression_codec: Option<CompressionCodec>,
    pub properties: HashMap<String, String>,
}

Blob metadata of Puffin

Fields

blob_type: String

Blob type

input_fields: Vec<i32>

For Iceberg, it’ list of field IDs the blob was computed for; the order of items is used to compute sketches stored in the blob.

For usage outside the context of Iceberg, it can be ignored.

snapshot_id: i64

For Iceberg, it’s ID of the Iceberg table’s snapshot the blob was computed from.

For usage outside the context of Iceberg, it can be ignored.

sequence_number: i64

For Iceberg, it’s sequence number of the Iceberg table’s snapshot the blob was computed from.

For usage outside the context of Iceberg, it can be ignored.

offset: i64

The offset in the file where the blob contents start

length: i64

The length of the blob stored in the file (after compression, if compressed)

compression_codec: Option<CompressionCodec>

See CompressionCodec. If omitted, the data is assumed to be uncompressed.

properties: HashMap<String, String>

Storage for arbitrary meta-information about the blob

Implementations

impl BlobMetadata

pub fn memory_usage(&self) -> usize

Calculates the memory usage of the blob metadata in bytes.

Trait Implementations

impl Clone for BlobMetadata

fn clone(&self) -> BlobMetadata

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BlobMetadata

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for BlobMetadata

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for BlobMetadata

fn eq(&self, other: &BlobMetadata) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for BlobMetadata

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for BlobMetadata

impl StructuralPartialEq for BlobMetadata