Struct CooperativeAmplifiers 

pub struct CooperativeAmplifiers {}

Wraps input-amplifying operators in CooperativeExec so their output participates in cooperative scheduling. See the module docs for why the default leaf-only instrumentation is not enough.

Implementations

impl CooperativeAmplifiers

pub fn new() -> Self

Trait Implementations

impl Debug for CooperativeAmplifiers

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

Formats the value using the given formatter.

impl Default for CooperativeAmplifiers

fn default() -> CooperativeAmplifiers

Returns the “default value” for a type.

impl PhysicalOptimizerRule for CooperativeAmplifiers

fn optimize( &self, plan: Arc<dyn ExecutionPlan>, _config: &ConfigOptions, ) -> Result<Arc<dyn ExecutionPlan>>

Rewrite plan to an optimized form.

fn name(&self) -> &str

A human readable name for this optimizer rule

fn schema_check(&self) -> bool

A flag to indicate whether the physical planner should validate that the rule will not change the schema of the plan after the rewriting. Some of the optimization rules might change the nullable properties of the schema and should disable the schema check.

fn optimize_with_context( &self, plan: Arc<dyn ExecutionPlan>, context: &dyn PhysicalOptimizerContext, ) -> Result<Arc<dyn ExecutionPlan>, DataFusionError>

Rewrite plan with access to extended context (statistics registry, etc.).