risingwave_meta::barrier::checkpoint::state

Struct BarrierWorkerState

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pub(crate) struct BarrierWorkerState {
    in_flight_prev_epoch: TracedEpoch,
    pending_non_checkpoint_barriers: Vec<u64>,
    pub(super) inflight_graph_info: InflightDatabaseInfo,
    pub(super) inflight_subscription_info: InflightSubscriptionInfo,
    paused_reason: Option<PausedReason>,
}
Expand description

The latest state of GlobalBarrierWorker after injecting the latest barrier.

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§in_flight_prev_epoch: TracedEpoch

The last sent prev_epoch

There’s no need to persist this field. On recovery, we will restore this from the latest committed snapshot in HummockManager.

§pending_non_checkpoint_barriers: Vec<u64>

The prev_epoch of pending non checkpoint barriers

§inflight_graph_info: InflightDatabaseInfo

Inflight running actors info.

§inflight_subscription_info: InflightSubscriptionInfo§paused_reason: Option<PausedReason>

Whether the cluster is paused and the reason.

Implementations§

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impl BarrierWorkerState

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pub(super) fn new() -> Self

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pub fn recovery( in_flight_prev_epoch: TracedEpoch, inflight_graph_info: InflightDatabaseInfo, inflight_subscription_info: InflightSubscriptionInfo, paused_reason: Option<PausedReason>, ) -> Self

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pub fn paused_reason(&self) -> Option<PausedReason>

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fn set_paused_reason(&mut self, paused_reason: Option<PausedReason>)

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pub fn in_flight_prev_epoch(&self) -> &TracedEpoch

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pub fn next_barrier_info( &mut self, command: Option<&Command>, is_checkpoint: bool, curr_epoch: TracedEpoch, ) -> Option<BarrierInfo>

Returns the BarrierInfo for the next barrier, and updates the state.

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pub fn apply_command( &mut self, command: Option<&Command>, ) -> (InflightDatabaseInfo, InflightSubscriptionInfo, HashSet<TableId>, HashSet<TableId>, Option<PausedReason>)

Returns the inflight actor infos that have included the newly added actors in the given command. The dropped actors will be removed from the state after the info get resolved.

Return (graph_info, subscription_info, table_ids_to_commit, jobs_to_wait, prev_paused_reason)

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