risingwave_meta::barrier::command

Struct CommandContext

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pub(super) struct CommandContext {
    pub(super) node_map: HashMap<WorkerId, PbWorkerNode>,
    subscription_info: InflightSubscriptionInfo,
    pub(super) barrier_info: BarrierInfo,
    pub(super) table_ids_to_commit: HashSet<TableId>,
    pub(super) command: Option<Command>,
    _span: Span,
}
Expand description

CommandContext is used for generating barrier and doing post stuffs according to the given Command.

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§node_map: HashMap<WorkerId, PbWorkerNode>

Resolved info in this barrier loop.

§subscription_info: InflightSubscriptionInfo§barrier_info: BarrierInfo§table_ids_to_commit: HashSet<TableId>§command: Option<Command>§_span: Span

The tracing span of this command.

Differs from crate::barrier::TracedEpoch, this span focuses on the lifetime of the corresponding barrier, including the process of waiting for the barrier to be sent, flowing through the stream graph on compute nodes, and finishing its post_collect stuffs.

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impl CommandContext

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pub(super) fn new( node_map: HashMap<WorkerId, PbWorkerNode>, barrier_info: BarrierInfo, subscription_info: InflightSubscriptionInfo, table_ids_to_commit: HashSet<TableId>, command: Option<Command>, span: Span, ) -> Self

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fn get_truncate_epoch(&self, retention_second: u64) -> Epoch

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pub(super) fn collect_commit_epoch_info( &self, info: &mut CommitEpochInfo, resps: Vec<BarrierCompleteResponse>, backfill_pinned_log_epoch: HashMap<TableId, (u64, HashSet<TableId>)>, )

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impl CommandContext

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pub async fn wait_epoch_commit( &self, barrier_manager_context: &GlobalBarrierWorkerContextImpl, ) -> MetaResult<()>

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pub async fn post_collect( &self, barrier_manager_context: &GlobalBarrierWorkerContextImpl, ) -> MetaResult<()>

Do some stuffs after barriers are collected and the new storage version is committed, for the given command.

Trait Implementations§

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impl Debug for CommandContext

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

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