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03174_exact_rows_before_aggregation is flaky #87927

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#88117
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03174_exact_rows_before_aggregation is flaky#87927
#88117
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flaky testflaky test found by CI
@ahmadov

Description

@ahmadov
ahmadov
opened on Sep 30, 2025

Happaned here: https://s3.amazonaws.com/clickhouse-test-reports/json.html?PR=87602&sha=ced14a5757d6a087ccf0461aa58c141fd653b8df&name_0=PR&name_1=Stateless+tests+%28amd_ubsan%2C+sequential%29&name_2=Tests

A few occurrence recently:
https://play.clickhouse.com/play?user=play#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

Error:

2025-09-29 11:10:53 --- /home/ubuntu/actions-runner/_work/ClickHouse/ClickHouse/tests/queries/0_stateless/03174_exact_rows_before_aggregation.reference	2025-09-29 11:00:45.056204132 -0500
2025-09-29 11:10:53 +++ /home/ubuntu/actions-runner/_work/ClickHouse/ClickHouse/tests/queries/0_stateless/03174_exact_rows_before_aggregation.stdout	2025-09-29 11:10:53.748254827 -0500
2025-09-29 11:10:53 @@ -419,21 +419,21 @@
2025-09-29 11:10:53  		[4],
2025-09-29 11:10:53  		[5],
2025-09-29 11:10:53  		[6],
2025-09-29 11:10:53  		[7],
2025-09-29 11:10:53  		[8],
2025-09-29 11:10:53  		[9]
2025-09-29 11:10:53  	],
2025-09-29 11:10:53  
2025-09-29 11:10:53  	"rows": 10,
2025-09-29 11:10:53  
2025-09-29 11:10:53 -	"rows_before_aggregation": 10
2025-09-29 11:10:53 +	"rows_before_aggregation": 19
2025-09-29 11:10:53  }
2025-09-29 11:10:53  {
2025-09-29 11:10:53  	"meta":
2025-09-29 11:10:53  	[
2025-09-29 11:10:53  		{
2025-09-29 11:10:53  			"name": "max(i)",
2025-09-29 11:10:53  			"type": "Int32"
2025-09-29 11:10:53  		}
2025-09-29 11:10:53  	],

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