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[BugFix] Prune aggregate non-required columns after mv transparent rewrite #55286

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merged 5 commits into from
Jan 22, 2025

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LiShuMing
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@LiShuMing LiShuMing commented Jan 21, 2025

Why I'm doing:

Since we treat mv as always-transparent(refresh timeliness is always fine) which we use mv transparent union rewrite internally. But after rewrite, mvScanPlan and mvCompensatePlan will output all columns of the mv's defined query, it may contain more columns than the requiredColumns.

  • For simple non-blocking operators(scan/join), it can be pruned by normal rules, but for aggregate operators, it should be handled in MVColumnPruner.

What I'm doing:

  • For mv rewrite, it's safe to prune aggregate columns in mv compensate plan, but it cannot determine required columns in the transparent rule.

Fixes #55221

Further:

What type of PR is this:

  • BugFix
  • Feature
  • Enhancement
  • Refactor
  • UT
  • Doc
  • Tool

Does this PR entail a change in behavior?

  • Yes, this PR will result in a change in behavior.
  • No, this PR will not result in a change in behavior.

If yes, please specify the type of change:

  • Interface/UI changes: syntax, type conversion, expression evaluation, display information
  • Parameter changes: default values, similar parameters but with different default values
  • Policy changes: use new policy to replace old one, functionality automatically enabled
  • Feature removed
  • Miscellaneous: upgrade & downgrade compatibility, etc.

Checklist:

  • I have added test cases for my bug fix or my new feature
  • This pr needs user documentation (for new or modified features or behaviors)
    • I have added documentation for my new feature or new function
  • This is a backport pr

Bugfix cherry-pick branch check:

  • I have checked the version labels which the pr will be auto-backported to the target branch
    • 3.4
    • 3.3
    • 3.2
    • 3.1
    • 3.0

@LiShuMing LiShuMing requested a review from a team as a code owner January 21, 2025 11:37
Signed-off-by: shuming.li <[email protected]>
Signed-off-by: shuming.li <[email protected]>
Signed-off-by: shuming.li <[email protected]>
@LiShuMing LiShuMing force-pushed the fix_transparent_union_rewrite.v1 branch from fdd6c86 to 728177f Compare January 22, 2025 01:46
Signed-off-by: shuming.li <[email protected]>
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[Java-Extensions Incremental Coverage Report]

pass : 0 / 0 (0%)

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[FE Incremental Coverage Report]

pass : 58 / 58 (100.00%)

file detail

path covered_line new_line coverage not_covered_line_detail
🔵 com/starrocks/sql/optimizer/rule/transformation/materialization/MaterializedViewRewriter.java 3 3 100.00% []
🔵 com/starrocks/sql/optimizer/rule/transformation/materialization/MvPartitionCompensator.java 11 11 100.00% []
🔵 com/starrocks/sql/optimizer/rule/transformation/materialization/MVColumnPruner.java 44 44 100.00% []

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[BE Incremental Coverage Report]

pass : 0 / 0 (0%)

@satanson satanson merged commit 8631ba9 into StarRocks:main Jan 22, 2025
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@Mergifyio backport branch-3.4

@github-actions github-actions bot removed the 3.4 label Jan 22, 2025
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@Mergifyio backport branch-3.3

@github-actions github-actions bot removed the 3.3 label Jan 22, 2025
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mergify bot commented Jan 22, 2025

backport branch-3.4

✅ Backports have been created

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mergify bot commented Jan 22, 2025

backport branch-3.3

✅ Backports have been created

mergify bot pushed a commit that referenced this pull request Jan 22, 2025
…write (#55286)

Signed-off-by: shuming.li <[email protected]>
(cherry picked from commit 8631ba9)

# Conflicts:
#	fe/fe-core/src/test/java/com/starrocks/sql/optimizer/rule/transformation/materialization/MvTransparentRewriteWithOlapTableTest.java
mergify bot pushed a commit that referenced this pull request Jan 22, 2025
…write (#55286)

Signed-off-by: shuming.li <[email protected]>
(cherry picked from commit 8631ba9)

# Conflicts:
#	fe/fe-core/src/main/java/com/starrocks/sql/optimizer/operator/OpRuleBit.java
#	fe/fe-core/src/main/java/com/starrocks/sql/optimizer/rule/transformation/MaterializedViewTransparentRewriteRule.java
#	fe/fe-core/src/main/java/com/starrocks/sql/optimizer/rule/transformation/materialization/MvPartitionCompensator.java
wanpengfei-git pushed a commit that referenced this pull request Jan 22, 2025
…write (backport #55286) (#55337)

Signed-off-by: shuming.li <[email protected]>
Co-authored-by: shuming.li <[email protected]>
wanpengfei-git pushed a commit that referenced this pull request Jan 22, 2025
…write (backport #55286) (#55338)

Signed-off-by: shuming.li <[email protected]>
Co-authored-by: shuming.li <[email protected]>
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查询基表 在物化视图 Union Rewrite会扫描所有字段,严重降低查询性能
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