risingwave_batch_executors::exchange_source

Trait ExchangeSource

pub trait ExchangeSource: Send + Debug {
    // Required methods
    fn take_data(
        &mut self,
    ) -> impl Future<Output = Result<Option<DataChunk>, BatchError>>;
    fn get_task_id(&self) -> TaskId;
}
Expand description

Each ExchangeSource maps to one task, it takes the execution result from task chunk by chunk.

Required Methods§

fn take_data( &mut self, ) -> impl Future<Output = Result<Option<DataChunk>, BatchError>>

fn get_task_id(&self) -> TaskId

Get upstream task id.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors§