Antalya 25.8.14 backport of #87687 - Fix two-level aggregation when using Merge over Distributed #1328
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…merge-distributed Fix two-level aggregation when using Merge over Distributed
…_merge_two_level_aggregation tests: fix 03403_distributed_merge_two_level_aggregation flakiness
mkmkme
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ianton-ru
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Jan 21, 2026
tests/queries/0_stateless/03403_distributed_merge_two_level_aggregation.sql
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The failed stateless tests are also related to Otherwise the actual output of the test shows that the issue has been resolved, which is seen by the line I'll update the |
…uckets_out_of_order_in_aggregation The test failed due to an extra step in actual pipeline output. It is caused by a missing optimization `enable_producing_buckets_out_of_order_in_aggregation` that was added to upstream later and is not worth backporting at this point. The change can be seen at [1]. [1]: https://github.com/ClickHouse/ClickHouse/pull/80179/changes#diff-1806a5c1f13b491c615e887366acf1daac6d85b1528be423e3762705482c80fbR574
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This PR also backports ClickHouse#88406 to fix the flaky test added in the original PR
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Fixed two-level aggregation when using
MergeoverDistributed(ClickHouse#87687 by @c-end + ClickHouse#88406 by @azat).CI/CD Options
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