Struct mz_storage_types::parameters::PgSourceSnapshotConfig

pub struct PgSourceSnapshotConfig {
    pub collect_strict_count: bool,
    pub fallback_to_strict_count: bool,
    pub wait_for_count: bool,
}

Configuration for how storage performs Postgres snapshots.

Fields

collect_strict_count: bool

Whether or not to collect a strict count(*) for each table during snapshotting. This is more accurate but way more expensive compared to an estimate in pg_class.

fallback_to_strict_count: bool

If a table is not vacuumed or analyzed (usually if it has a low number of writes, or low number of rows in general) in postgres, the estimate count in pg_class is just -1. This config controls whether we should fallback to count(*)in that case. It does nothing ifcollect_strict_count=true`.

wait_for_count: bool

Whether or not we wait for count(*) to finish before beginning to read the snapshot for the given table.

Implementations

impl PgSourceSnapshotConfig

pub const fn new() -> Self

Trait Implementations

impl Clone for PgSourceSnapshotConfig

fn clone(&self) -> PgSourceSnapshotConfig

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PgSourceSnapshotConfig

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

Formats the value using the given formatter.

impl Default for PgSourceSnapshotConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for PgSourceSnapshotConfig

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for PgSourceSnapshotConfig

fn eq(&self, other: &PgSourceSnapshotConfig) -> 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 RustType<ProtoPgSourceSnapshotConfig> for PgSourceSnapshotConfig

fn into_proto(&self) -> ProtoPgSourceSnapshotConfig

Convert a Self into a Proto value.

fn from_proto( proto: ProtoPgSourceSnapshotConfig, ) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.

fn into_proto_owned(self) -> Proto

A zero clone version of Self::into_proto that types can optionally implement, otherwise, the default implementation delegates to Self::into_proto.

impl Serialize for PgSourceSnapshotConfig

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for PgSourceSnapshotConfig

impl Eq for PgSourceSnapshotConfig

impl StructuralPartialEq for PgSourceSnapshotConfig