query::dist_plan::planner

Struct MergeSortExtensionPlanner

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pub struct MergeSortExtensionPlanner {}
Expand description

Planner for convert merge sort logical plan to physical plan

it is currently a fallback to sort, and doesn’t change the execution plan: MergeSort(MergeScan) -> Sort(MergeScan) - to physical plan -> ... It should be applied after DistExtensionPlanner

(Later when actually impl this merge sort)

We should ensure the number of partition is not smaller than the number of region at present. Otherwise this would result in incorrect output.

Trait Implementations§

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impl ExtensionPlanner for MergeSortExtensionPlanner

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fn plan_extension<'life0, 'life1, 'life2, 'life3, 'life4, 'life5, 'life6, 'async_trait>( &'life0 self, planner: &'life1 dyn PhysicalPlanner, node: &'life2 dyn UserDefinedLogicalNode, _logical_inputs: &'life3 [&'life4 LogicalPlan], physical_inputs: &'life5 [Arc<dyn ExecutionPlan>], session_state: &'life6 SessionState, ) -> Pin<Box<dyn Future<Output = Result<Option<Arc<dyn ExecutionPlan>>>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait, 'life3: 'async_trait, 'life4: 'async_trait, 'life5: 'async_trait, 'life6: 'async_trait,

Create a physical plan for a [UserDefinedLogicalNode]. Read more

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