Dandandan commented on a change in pull request #634:
URL: https://github.com/apache/arrow-datafusion/pull/634#discussion_r663374937
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File path: ballista/rust/core/src/utils.rs
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@@ -227,16 +227,7 @@ fn build_exec_plan_diagram(
/// Create a DataFusion context that is compatible with Ballista
pub fn create_datafusion_context() -> ExecutionContext {
- // remove Repartition rule because that isn't supported yet
- let rules: Vec<Arc<dyn PhysicalOptimizerRule + Send + Sync>> = vec![
- Arc::new(CoalesceBatches::new()),
- Arc::new(AddCoalescePartitionsExec::new()),
- ];
- let config = ExecutionConfig::new()
- .with_concurrency(1)
- .with_repartition_joins(false)
- .with_repartition_aggregations(false)
- .with_physical_optimizer_rules(rules);
+ let config = ExecutionConfig::new().with_concurrency(2); // TODO: this is
hack to enable partitioned joins
Review comment:
What is the idea here for later? I guess the repartitioning needs to be
applied with `concurrency=1` too to avoid inefficient plans?
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