Ted-Jiang opened a new issue, #2999: URL: https://github.com/apache/arrow-datafusion/issues/2999
**Describe the bug**
submit a query
```
❯ select sum("30"), "29" from test1 group by "29";
198683 rows in set. Query took 0.436 seconds.
```
then use `explain analyze `
```
explain analyze select sum("30"), "29" from test1 group by "29";
+-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| plan_type | plan
|
+-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Plan with Metrics | CoalescePartitionsExec, metrics=[output_rows=198683,
elapsed_compute=47.871µs, spill_count=0, spilled_bytes=0, mem_used=0]
|
| | ProjectionExec: expr=[SUM(test1.30)@1 as
SUM(test1.30), 29@0 as 29], metrics=[output_rows=198683,
elapsed_compute=103.299µs, spill_count=0, spilled_bytes=0, mem_used=0]
|
| | AggregateExec: mode=FinalPartitioned, gby=[29@0 as
29], aggr=[SUM(test1.30)], metrics=[output_rows=198683,
elapsed_compute=514.502772ms, spill_count=0, spilled_bytes=0, mem_used=0]
|
| | CoalesceBatchesExec: target_batch_size=4096,
metrics=[output_rows=972749, elapsed_compute=91.069241ms, spill_count=0,
spilled_bytes=0, mem_used=0]
|
| | RepartitionExec: partitioning=Hash([Column {
name: "29", index: 0 }], 100),
metrics=[fetch_time{inputPartition=0}=5.544007548s,
repart_time{inputPartition=0}=75.322775ms,
send_time{inputPartition=0}=14.473058ms]
|
| | AggregateExec: mode=Partial, gby=[29@1 as
29], aggr=[SUM(test1.30)], metrics=[output_rows=972749,
elapsed_compute=1.915277419s, spill_count=0, spilled_bytes=0, mem_used=0]
|
| | RepartitionExec:
partitioning=RoundRobinBatch(100),
metrics=[send_time{inputPartition=0}=243.407µs,
fetch_time{inputPartition=0}=43.401471ms, repart_time{inputPartition=0}=1ns]
|
| | ParquetExec: limit=None, projection=[30,
29], metrics=[output_rows=1000202, elapsed_compute=13.253088ms, spill_count=0,
spilled_bytes=0, mem_used=0, num_predicate_creation_errors=0,
row_groups_pruned{filename=kylin/rno_native_dev/kylin_metadata_test/ssb/parquet/kylin_udaf_cube/19900101000000_20000101000000_ACG/17179869183/part-00005-84c1f179-eda5-4947-86ca-3d2497b485c4-c000.snappy.parquet}=0,
bytes_scanned{filename=kylin/rno_native_dev/kylin_metadata_test/ssb/parquet/kylin_udaf_cube/19900101000000_20000101000000_ACG/17179869183/part-00005-84c1f179-eda5-4947-86ca-3d2497b485c4-c000.snappy.parquet}=5959033,
predicate_evaluation_errors{filename=kylin/rno_native_dev/kylin_metadata_test/ssb/parquet/kylin_udaf_cube/19900101000000_20000101000000_ACG/17179869183/part-00005-84c1f179-eda5-4947-86ca-3d2497b485c4-c000.snappy.parquet}=0]
|
| |
|
+-------------------+-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
1 row in set. Query took 0.093 seconds.
```
the first `elapsed_compute=1.915277419s` in AGG is even longer than the
query cose 😂
**To Reproduce**
Steps to reproduce the behavior:
**Expected behavior**
A clear and concise description of what you expected to happen.
**Additional context**
Add any other context about the problem here.
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