branch-4.0: [Opt](cloud) Add segment prefetcher #59482#61422
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bobhan1 wants to merge 3 commits intoapache:branch-4.0from
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branch-4.0: [Opt](cloud) Add segment prefetcher #59482#61422bobhan1 wants to merge 3 commits intoapache:branch-4.0from
bobhan1 wants to merge 3 commits intoapache:branch-4.0from
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- Environment: 1 FE + 2 BE(aliyun, [ecs.i4g.16xlarge](https://help.aliyun.com/zh/ecs/user-guide/instance-families-with-local-ssds#i4g), 2.7 GHz Intel® Xeon® Scalable (Ice Lake) processors with high-performance local NVMe SSDs) - Network baseline bandwidth **32 Gbit/s** on each machine - Duplicate table, 16 buckets, 6178831001 rows, data size is 396.837 GB - Cold run means **query without any doris page, OS page cache or local disk file cache, all data will be fetched from S3**. - Query: `select count(user_id) from test_dup3 where env_id % 10 = 0 and user_id%10=0 and time % 10 =0 and event_id % 10 = 0 and length(domain) % 10 = 0 and length(path) % 10 = 0 and length(query)%10=0;` - For this query, each BE will download **114GB** data to local disk file cache from S3 - 8 instance * 48 scanner = 384 scanner on each BE, and scanner thread pool size is set to 48 ||no prefetch|prefetch_block_size=2| |---|---|---| | query time | 2min47sec | 39sec273ms | | network bandwidth</br>(on one BE) | <img width="960" height="720" alt="slow" src="https://github.com/user-attachments/assets/73a5d621-dc9c-4885-b336-9975230a40c9" />| <img width="960" height="720" alt="fast" src="https://github.com/user-attachments/assets/0e147c4a-7b13-4eaa-a6ea-a8c171ce1c52" />| based on apache#59476 - Test <!-- At least one of them must be included. --> - [ ] Regression test - [ ] Unit Test - [ ] Manual test (add detailed scripts or steps below) - [ ] No need to test or manual test. Explain why: - [ ] This is a refactor/code format and no logic has been changed. - [ ] Previous test can cover this change. - [ ] No code files have been changed. - [ ] Other reason <!-- Add your reason? --> - Behavior changed: - [ ] No. - [ ] Yes. <!-- Explain the behavior change --> - Does this need documentation? - [ ] No. - [ ] Yes. <!-- Add document PR link here. eg: apache/doris-website#1214 --> - [ ] Confirm the release note - [ ] Confirm test cases - [ ] Confirm document - [ ] Add branch pick label <!-- Add branch pick label that this PR should merge into -->
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Thank you for your contribution to Apache Doris. Please clearly describe your PR:
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run buildall |
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run buildall |
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pick #59482 and #60870