2010YOUY01 commented on code in PR #12127:
URL: https://github.com/apache/datafusion/pull/12127#discussion_r1729673683
##########
datafusion/physical-plan/src/aggregates/row_hash.rs:
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@@ -76,35 +76,43 @@ use super::AggregateExec;
/// This encapsulates the spilling state
struct SpillState {
- /// If data has previously been spilled, the locations of the
- /// spill files (in Arrow IPC format)
- spills: Vec<RefCountedTempFile>,
-
+ /*
======================================================================== */
+ // PROPERTIES:
+ // These fields are initialized at the start and remain constant throughout
+ // the execution.
+ /*
======================================================================== */
/// Sorting expression for spilling batches
spill_expr: Vec<PhysicalSortExpr>,
/// Schema for spilling batches
spill_schema: SchemaRef,
- /// true when streaming merge is in progress
- is_stream_merging: bool,
-
/// aggregate_arguments for merging spilled data
merging_aggregate_arguments: Vec<Vec<Arc<dyn PhysicalExpr>>>,
/// GROUP BY expressions for merging spilled data
merging_group_by: PhysicalGroupBy,
+
+ /*
======================================================================== */
Review Comment:
I can't find datafusion style guide, so I'm assuming the practice is
following the existing style
I searched the code base and found comment separator `// ========`, I'll
update to keep consistent with this format
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