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25.8.14 Backport of #92250 - Reduce INSERT/merges memory usage with wide parts for very wide tables by enabling adaptive write buffers #1307

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25.8.14 Backport of #92250 - Reduce INSERT/merges memory usage with wide parts for very wide tables by enabling adaptive write buffers #1307
zvonand wants to merge 2 commits intoreleases/25.8.14from
backports/25.8.14/92250

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@zvonand zvonand commented Jan 15, 2026

Changelog category (leave one):

  • Performance Improvement

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

Reduce INSERT/merges memory usage with wide parts for very wide tables by enabling adaptive write buffers. Add support of adaptive write buffers for encrypted disks (ClickHouse#92250 by @azat)

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Exclude tests:

  • Fast test
  • Integration Tests
  • Stateless tests
  • Stateful tests
  • Performance tests
  • All with ASAN
  • All with TSAN
  • All with MSAN
  • All with UBSAN
  • All with Coverage
  • All with Aarch64
  • All Regression
  • Disable CI Cache

Regression jobs to run:

  • Fast suites (mostly <1h)
  • Aggregate Functions (2h)
  • Alter (1.5h)
  • Benchmark (30m)
  • ClickHouse Keeper (1h)
  • Iceberg (2h)
  • LDAP (1h)
  • Parquet (1.5h)
  • RBAC (1.5h)
  • SSL Server (1h)
  • S3 (2h)
  • Tiered Storage (2h)

…_adaptive_write_buffer

Reduce INSERT/merges memory usage with wide parts for very wide tables by enabling adaptive write buffers
@zvonand zvonand added the 25.8.14 25.8.14 Stable label Jan 15, 2026
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github-actions bot commented Jan 15, 2026

Workflow [PR], commit [231f4af]

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zvonand commented Jan 27, 2026

#1341

@zvonand zvonand closed this Jan 27, 2026
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