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ArrayShardAggReq

nodedb_cluster::distributed_array::wire

Struct ArrayShardAggReq

pub struct ArrayShardAggReq {
    pub array_id_msgpack: Vec<u8>,
    pub attr_idx: u32,
    pub reducer_msgpack: Vec<u8>,
    pub group_by_dim: i32,
    pub cell_filter_msgpack: Vec<u8>,
    pub shard_hilbert_range: Option<(u64, u64)>,
    pub system_as_of: Option<i64>,
    pub valid_at_ms: Option<i64>,
}

Expand description

Scatter request: coordinator asks a shard to compute a partial aggregate.

Mirrors ArrayOp::Aggregate — attribute index + reducer + optional filter.

Fields§

§array_id_msgpack: Vec<u8>§attr_idx: u32§reducer_msgpack: Vec<u8>

Zerompk encoding of ArrayReducer (c_enum, 1 byte on wire).

§group_by_dim: i32

Negative means no group-by; non-negative is the dimension index.

§cell_filter_msgpack: Vec<u8>

Optional surrogate pre-filter; empty = all cells.

§shard_hilbert_range: Option<(u64, u64)>

Hilbert-prefix range [lo, hi] that this shard owns. The shard applies this as a pre-filter so it only counts cells whose Hilbert prefix falls within the range. None means unbounded (scan all).

§system_as_of: Option<i64>

Bitemporal system-time cutoff forwarded from ArrayOp::Aggregate::system_as_of. None = live read.

§valid_at_ms: Option<i64>

Bitemporal valid-time point forwarded from ArrayOp::Aggregate::valid_at_ms. None = no valid-time filter.

Trait Implementations§

impl Clone for ArrayShardAggReq

fn clone(&self) -> ArrayShardAggReq

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

impl Debug for ArrayShardAggReq

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

Formats the value using the given formatter. Read more

impl<'__msgpack_de> FromMessagePack<'__msgpack_de> for ArrayShardAggReq

fn read<R: Read<'__msgpack_de>>(reader: &mut R) -> Result<Self, Error>
where Self: Sized,

Reads the MessagePack representation of this value from the provided reader.

impl ToMessagePack for ArrayShardAggReq

fn write<W: Write>(&self, writer: &mut W) -> Result<(), Error>

Writes the MessagePack representation of this value into the provided writer.

Auto Trait Implementations§

impl Freeze for ArrayShardAggReq

impl RefUnwindSafe for ArrayShardAggReq

impl Send for ArrayShardAggReq

impl Sync for ArrayShardAggReq

impl Unpin for ArrayShardAggReq

impl UnsafeUnpin for ArrayShardAggReq

impl UnwindSafe for ArrayShardAggReq

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

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Gets the TypeId of self. Read more

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

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