DataFusion operators expose runtime metrics so you can understand where time is spent and how much data flows through the pipeline. See more in EXPLAIN ANALYZE.
BaselineMetrics are available in most physical operators to capture common measurements.
| Metric | Description |
|---|---|
| elapsed_compute | CPU time the operator actively spends processing work. |
| output_rows | Total number of rows the operator produces. |
| output_bytes | Memory usage of all output batches. Note: This value may be overestimated. If multiple output RecordBatch instances share underlying memory buffers, their sizes will be counted multiple times. |
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