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refactor: optimize final aggregation for large datasets #19208

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@dqhl76 dqhl76 commented Jan 8, 2026 •
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I hereby agree to the terms of the CLA available at: https://docs.databend.com/dev/policies/cla/

Summary

This PR depends on #19155. Only Draft, performance test

Tests

  • Unit Test
  • Logic Test
  • Benchmark Test
  • No Test - Explain why

Type of change

  • Bug Fix (non-breaking change which fixes an issue)
  • New Feature (non-breaking change which adds functionality)
  • Breaking Change (fix or feature that could cause existing functionality not to work as expected)
  • Documentation Update
  • Refactoring
  • Performance Improvement
  • Other (please describe):

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@github-actions github-actions bot added the pr-refactor this PR changes the code base without new features or bugfix label Jan 8, 2026
@dqhl76 dqhl76 added the ci-cloud Build docker image for cloud test label Jan 8, 2026
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@dqhl76 dqhl76 force-pushed the partitioned-hashindex branch from 32a6d9a to d4a0f93 Compare January 13, 2026 03:02
@dqhl76 dqhl76 removed the ci-cloud Build docker image for cloud test label Jan 13, 2026
@dqhl76 dqhl76 force-pushed the partitioned-hashindex branch 3 times, most recently from d81914f to d3354f1 Compare January 14, 2026 03:30
@dqhl76 dqhl76 added the ci-cloud Build docker image for cloud test label Jan 14, 2026
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@dqhl76 dqhl76 force-pushed the partitioned-hashindex branch from 3f0b61c to 638afa0 Compare January 17, 2026 13:10
@dqhl76 dqhl76 added ci-cloud Build docker image for cloud test and removed ci-cloud Build docker image for cloud test labels Jan 17, 2026
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@dqhl76 dqhl76 force-pushed the partitioned-hashindex branch from 638afa0 to 5a6ea78 Compare January 21, 2026 06:34
@dqhl76 dqhl76 added ci-cloud Build docker image for cloud test and removed ci-cloud Build docker image for cloud test labels Jan 21, 2026
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@dqhl76 dqhl76 added ci-cloud Build docker image for cloud test and removed ci-cloud Build docker image for cloud test labels Jan 21, 2026
@dqhl76 dqhl76 added ci-cloud Build docker image for cloud test and removed ci-cloud Build docker image for cloud test labels Jan 22, 2026
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@dqhl76 dqhl76 added ci-cloud Build docker image for cloud test and removed ci-cloud Build docker image for cloud test labels Jan 22, 2026
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@dqhl76 dqhl76 force-pushed the partitioned-hashindex branch from 6f0b419 to 0ab448a Compare January 23, 2026 02:03
@dqhl76 dqhl76 force-pushed the partitioned-hashindex branch from 27dc0ab to fb2707d Compare January 23, 2026 06:57
@dqhl76 dqhl76 added ci-cloud Build docker image for cloud test and removed ci-cloud Build docker image for cloud test labels Jan 23, 2026
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github-actions bot commented Jan 23, 2026

Docker Image for PR

  • tag: pr-19208-019a808-1769154958

note: this image tag is only available for internal use.

@dqhl76 dqhl76 added ci-cloud Build docker image for cloud test and removed ci-cloud Build docker image for cloud test labels Jan 23, 2026
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github-actions bot commented Jan 23, 2026

Docker Image for PR

  • tag: pr-19208-b29ff0e-1769163888

note: this image tag is only available for internal use.

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dqhl76 commented Jan 23, 2026

image

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