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Storages: load RSResult only once #9738

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merged 12 commits into from
Dec 25, 2024

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Lloyd-Pottiger
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@Lloyd-Pottiger Lloyd-Pottiger commented Dec 23, 2024

What problem does this PR solve?

Issue Number: ref #6233

Problem Summary:

What is changed and how it workss

Before, TiFlash will load the `RSResult` three times for one query (MVCC/Build Bitmap/Query).

This PR introduces `DMFilePackFilterResult` which load `RSResult` only once, and only passes the `RSResult` to `DMFileReader`.

Check List

Tests

  • Unit test
  • Integration test
  • Manual test (add detailed scripts or steps below)
  • No code

Side effects

  • Performance regression: Consumes more CPU
  • Performance regression: Consumes more Memory
  • Breaking backward compatibility

Documentation

  • Affects user behaviors
  • Contains syntax changes
  • Contains variable changes
  • Contains experimental features
  • Changes MySQL compatibility

Release note

None

@ti-chi-bot ti-chi-bot bot added release-note-none Denotes a PR that doesn't merit a release note. size/XXL Denotes a PR that changes 1000+ lines, ignoring generated files. labels Dec 23, 2024
Signed-off-by: Lloyd-Pottiger <[email protected]>
Signed-off-by: Lloyd-Pottiger <[email protected]>
Signed-off-by: Lloyd-Pottiger <[email protected]>
Signed-off-by: Lloyd-Pottiger <[email protected]>
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@CalvinNeo CalvinNeo left a comment

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lgtm

@ti-chi-bot ti-chi-bot bot added approved needs-1-more-lgtm Indicates a PR needs 1 more LGTM. labels Dec 24, 2024
Signed-off-by: JaySon-Huang <[email protected]>
dbms/src/Storages/DeltaMerge/File/DMFilePackFilterResult.h Outdated Show resolved Hide resolved
}
}

SkippableBlockInputStreamPtr StableValueSpace::Snapshot::tryGetInputStreamWithVectorIndex(
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Why do we need to add this method? Seems it is the same as StableValueSpace::Snapshot::getInputStream except ann_query_info is not nullptr?

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I will continue to separate all tryGetInputStreamWithVectorIndex in the next PR, to make it more clear.

Signed-off-by: Lloyd-Pottiger <[email protected]>
Signed-off-by: Lloyd-Pottiger <[email protected]>
* Remove useless var from DMFilePackFilterResult

Signed-off-by: JaySon-Huang <[email protected]>

* Remove shared_ptr to DMFile inside DMFilePackFilterResult

Signed-off-by: JaySon-Huang <[email protected]>

* fix

Signed-off-by: JaySon-Huang <[email protected]>

---------

Signed-off-by: JaySon-Huang <[email protected]>
Signed-off-by: JaySon-Huang <[email protected]>
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ti-chi-bot bot commented Dec 25, 2024

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: CalvinNeo, JaySon-Huang

The full list of commands accepted by this bot can be found here.

The pull request process is described here

Needs approval from an approver in each of these files:
  • OWNERS [CalvinNeo,JaySon-Huang]

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@ti-chi-bot ti-chi-bot bot added lgtm and removed needs-1-more-lgtm Indicates a PR needs 1 more LGTM. labels Dec 25, 2024
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ti-chi-bot bot commented Dec 25, 2024

[LGTM Timeline notifier]

Timeline:

  • 2024-12-24 15:01:31.506989557 +0000 UTC m=+1573881.595792097: ☑️ agreed by CalvinNeo.
  • 2024-12-25 07:13:08.441292895 +0000 UTC m=+1632178.530095438: ☑️ agreed by JaySon-Huang.

@ti-chi-bot ti-chi-bot bot merged commit 8369058 into pingcap:master Dec 25, 2024
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@Lloyd-Pottiger Lloyd-Pottiger deleted the load-RSResult-once branch December 25, 2024 08:49
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3 participants