andygrove commented on issue #1275:
URL:
https://github.com/apache/datafusion-comet/issues/1275#issuecomment-2787665609
Sample native plan with metrics:
```
25/04/08 15:06:01 INFO core/src/execution/jni_api.rs: Comet native query
plan with metrics (Plan #185 Stage 7 Partition 6):
plan creation (including CometScans fetching first batches) took 3.022557ms:
ProjectionExec: expr=[first@2 as col_0, first@3 as col_1, col_0@0 as col_2,
first@4 as col_3, first@5 as col_4, first@6 as col_5, first@7 as col_6, first@8
as col_7, first@9 as col_8, first@10 as col_9, col_1@1 as col_10, first@11 as
col_11, first@12 as col_12, first@13 as col_13, first@14 as col_14, first@15 as
col_15, first@16 as col_16, first@17 as col_17, first@18 as col_18, first@19 as
col_19, first@20 as col_20, first@21 as col_21, first@22 as col_22],
metrics=[output_rows=105687, elapsed_compute=67.075µs]
AggregateExec: mode=Final, gby=[col_0@0 as col_0, col_1@1 as col_1],
aggr=[first, first, first, first, first, first, first, first, first, first,
first, first, first, first, first, first, first, first, first, first, first],
metrics=[output_rows=105687, elapsed_compute=994.964965ms, spill_count=0,
spilled_bytes=0, spilled_rows=0, peak_mem_used=485980792]
AggregateExec: mode=Partial, gby=[col_2@2 as col_0, col_10@10 as col_1],
aggr=[first, first, first, first, first, first, first, first, first, first,
first, first, first, first, first, first, first, first, first, first, first],
metrics=[output_rows=105687, elapsed_compute=9.759887803s, spill_count=0,
spilled_bytes=0, spilled_rows=0, skipped_aggregation_rows=0,
peak_mem_used=485980792]
ScanExec: source=[ShuffleQueryStage (unknown),
Statistics(sizeInBytes=64.1 GiB, rowCount=2.88E+8)], schema=[col_0: Int32,
col_1: Int32, col_2: Int32, col_3: Int32, col_4: Int32, col_5: Int32, col_6:
Int32, col_7: Int32, col_8: Int32, col_9: Int32, col_10: Int32, col_11:
Decimal128(7, 2), col_12: Decimal128(7, 2), col_13: Decimal128(7, 2), col_14:
Decimal128(7, 2), col_15: Decimal128(7, 2), col_16: Decimal128(7, 2), col_17:
Decimal128(7, 2), col_18: Decimal128(7, 2), col_19: Decimal128(7, 2), col_20:
Decimal128(7, 2), col_21: Decimal128(7, 2), col_22: Decimal128(7, 2)],
metrics=[output_rows=1508245, elapsed_compute=262.520531ms,
arrow_ffi_time=12.049335ms, cast_time=1ns, jvm_fetch_time=249.312038ms]
```
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