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Convert merge op use logical datafusion ops
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,44 @@ | ||
| //! Logical Operations for DataFusion | ||
| use datafusion_expr::{LogicalPlan, UserDefinedLogicalNodeCore}; | ||
| pub const METRIC_OBSERVER_NAME: &str = "MetricObserver"; | ||
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| #[derive(Debug, Hash, Eq, PartialEq)] | ||
| pub(crate) struct MetricObserver { | ||
| // This acts as an anchor when converting a to physical operator | ||
| pub anchor: String, | ||
| pub input: LogicalPlan, | ||
| } | ||
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| impl UserDefinedLogicalNodeCore for MetricObserver { | ||
| fn name(&self) -> &str { | ||
| METRIC_OBSERVER_NAME | ||
| } | ||
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| fn inputs(&self) -> Vec<&datafusion_expr::LogicalPlan> { | ||
| vec![&self.input] | ||
| } | ||
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| fn schema(&self) -> &datafusion_common::DFSchemaRef { | ||
| self.input.schema() | ||
| } | ||
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| fn expressions(&self) -> Vec<datafusion_expr::Expr> { | ||
| vec![] | ||
| } | ||
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| fn fmt_for_explain(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result { | ||
| write!(f, "MetricObserver name={}", &self.anchor) | ||
| } | ||
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| fn from_template( | ||
| &self, | ||
| _exprs: &[datafusion_expr::Expr], | ||
| inputs: &[datafusion_expr::LogicalPlan], | ||
| ) -> Self { | ||
| MetricObserver { | ||
| anchor: self.anchor.clone(), | ||
| input: inputs[0].clone(), | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,145 @@ | ||
| //! Physical Operations for DataFusion | ||
| use std::sync::Arc; | ||
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| use arrow_schema::SchemaRef; | ||
| use datafusion::arrow::record_batch::RecordBatch; | ||
| use datafusion::error::Result as DataFusionResult; | ||
| use datafusion::physical_plan::DisplayAs; | ||
| use datafusion::physical_plan::{ | ||
| metrics::{ExecutionPlanMetricsSet, MetricsSet}, | ||
| ExecutionPlan, RecordBatchStream, SendableRecordBatchStream, | ||
| }; | ||
| use futures::{Stream, StreamExt}; | ||
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| pub(crate) type MetricObserverFunction = fn(&RecordBatch, &ExecutionPlanMetricsSet) -> (); | ||
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| pub(crate) struct MetricObserverExec { | ||
| parent: Arc<dyn ExecutionPlan>, | ||
| anchor: String, | ||
| metrics: ExecutionPlanMetricsSet, | ||
| update: MetricObserverFunction, | ||
| } | ||
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| impl MetricObserverExec { | ||
| pub fn new(anchor: String, parent: Arc<dyn ExecutionPlan>, f: MetricObserverFunction) -> Self { | ||
| MetricObserverExec { | ||
| parent, | ||
| anchor, | ||
| metrics: ExecutionPlanMetricsSet::new(), | ||
| update: f, | ||
| } | ||
| } | ||
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| pub fn anchor(&self) -> &str { | ||
| &self.anchor | ||
| } | ||
| } | ||
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| impl std::fmt::Debug for MetricObserverExec { | ||
| fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { | ||
| f.debug_struct("MetricObserverExec") | ||
| .field("anchor", &self.anchor) | ||
| .field("metrics", &self.metrics) | ||
| .finish() | ||
| } | ||
| } | ||
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| impl DisplayAs for MetricObserverExec { | ||
| fn fmt_as( | ||
| &self, | ||
| _: datafusion::physical_plan::DisplayFormatType, | ||
| f: &mut std::fmt::Formatter, | ||
| ) -> std::fmt::Result { | ||
| write!(f, "MetricObserverExec anchor={}", self.anchor) | ||
| } | ||
| } | ||
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| impl ExecutionPlan for MetricObserverExec { | ||
| fn as_any(&self) -> &dyn std::any::Any { | ||
| self | ||
| } | ||
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| fn schema(&self) -> arrow_schema::SchemaRef { | ||
| self.parent.schema() | ||
| } | ||
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| fn output_partitioning(&self) -> datafusion::physical_plan::Partitioning { | ||
| self.parent.output_partitioning() | ||
| } | ||
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| fn output_ordering(&self) -> Option<&[datafusion_physical_expr::PhysicalSortExpr]> { | ||
| self.parent.output_ordering() | ||
| } | ||
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| fn children(&self) -> Vec<Arc<dyn ExecutionPlan>> { | ||
| vec![self.parent.clone()] | ||
| } | ||
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| fn execute( | ||
| &self, | ||
| partition: usize, | ||
| context: Arc<datafusion::execution::context::TaskContext>, | ||
| ) -> datafusion_common::Result<datafusion::physical_plan::SendableRecordBatchStream> { | ||
| let res = self.parent.execute(partition, context)?; | ||
| Ok(Box::pin(MetricObserverStream { | ||
| schema: self.schema(), | ||
| input: res, | ||
| metrics: self.metrics.clone(), | ||
| update: self.update, | ||
| })) | ||
| } | ||
|
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| fn statistics(&self) -> datafusion_common::Statistics { | ||
| self.parent.statistics() | ||
| } | ||
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| fn with_new_children( | ||
| self: Arc<Self>, | ||
| children: Vec<Arc<dyn ExecutionPlan>>, | ||
| ) -> datafusion_common::Result<Arc<dyn ExecutionPlan>> { | ||
| //TODO: Error on multiple children | ||
| Ok(Arc::new(MetricObserverExec::new( | ||
| self.anchor.clone(), | ||
| children.get(0).unwrap().clone(), | ||
| self.update, | ||
| ))) | ||
| } | ||
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| fn metrics(&self) -> Option<MetricsSet> { | ||
| Some(self.metrics.clone_inner()) | ||
| } | ||
| } | ||
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| struct MetricObserverStream { | ||
| schema: SchemaRef, | ||
| input: SendableRecordBatchStream, | ||
| metrics: ExecutionPlanMetricsSet, | ||
| update: MetricObserverFunction, | ||
| } | ||
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| impl Stream for MetricObserverStream { | ||
| type Item = DataFusionResult<RecordBatch>; | ||
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| fn poll_next( | ||
| mut self: std::pin::Pin<&mut Self>, | ||
| cx: &mut std::task::Context<'_>, | ||
| ) -> std::task::Poll<Option<Self::Item>> { | ||
| self.input.poll_next_unpin(cx).map(|x| match x { | ||
| Some(Ok(batch)) => { | ||
| (self.update)(&batch, &self.metrics); | ||
| Some(Ok(batch)) | ||
| } | ||
| other => other, | ||
| }) | ||
| } | ||
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| fn size_hint(&self) -> (usize, Option<usize>) { | ||
| self.input.size_hint() | ||
| } | ||
| } | ||
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| impl RecordBatchStream for MetricObserverStream { | ||
| fn schema(&self) -> SchemaRef { | ||
| self.schema.clone() | ||
| } | ||
| } |
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