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Storage: Fix getSquashDeleteRange does not return correctly squashed key-range when using common-handle (#9530) #9542

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This is an automated cherry-pick of #9530

What problem does this PR solve?

Issue Number: close #9529

Problem Summary:

we get the "suqash delete range" to estimate whether there are sufficient delete rows that we need to compact data in background thread.

auto actual_delete_range = snap->delta->getSquashDeleteRange().shrink(segment_range);
if (actual_delete_range.none())
return false;

In ColumnFileSetSnapshot::getSquashDeleteRange, it use the member variable is_common_handle, rowkey_column_size to generate the rowkey range.
But actually those two variable are not set correctly. is_common_handle is always false in ColumnFileSetSnapshot

RowKeyRange ColumnFileSetSnapshot::getSquashDeleteRange() const
{
RowKeyRange squashed_delete_range = RowKeyRange::newNone(is_common_handle, rowkey_column_size);
for (const auto & column_file : column_files)
{
if (auto * f_delete = column_file->tryToDeleteRange(); f_delete)
squashed_delete_range = squashed_delete_range.merge(f_delete->getDeleteRange());
}
return squashed_delete_range;
}

So when the table use common-handle, shouldCompactDeltaWithStable always returns false, and the segment background gc is not GC in timely

What is changed and how it works?

Storage: Fix `getSquashDeleteRange` does not return correctly squashed key-range when using common-handle
  • Remove unused variable ColumnFileSetSnapshot::{is_common_handle, rowkey_column_size}
  • Pass the correct is_common_handle, rowkey_column_size in function shouldCompactDeltaWithStable
  • Add check for rowkey-range is_common_handle in DMFilePackFilter

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

Improve the data background GC speed on clustered-index table
提升聚簇索引的表后台回收过期数据的速度

@ti-chi-bot ti-chi-bot added release-note Denotes a PR that will be considered when it comes time to generate release notes. size/L Denotes a PR that changes 100-499 lines, ignoring generated files. type/cherry-pick-for-release-7.5 This PR is cherry-picked to release-7.5 from a source PR. labels Oct 17, 2024
@ti-chi-bot ti-chi-bot bot added do-not-merge/cherry-pick-not-approved cherry-pick-approved Cherry pick PR approved by release team. size/XL Denotes a PR that changes 500-999 lines, ignoring generated files. and removed do-not-merge/cherry-pick-not-approved size/L Denotes a PR that changes 100-499 lines, ignoring generated files. labels Oct 17, 2024
Signed-off-by: JaySon-Huang <[email protected]>
@ti-chi-bot ti-chi-bot bot added size/L Denotes a PR that changes 100-499 lines, ignoring generated files. and removed size/XL Denotes a PR that changes 500-999 lines, ignoring generated files. labels Oct 17, 2024
@ti-chi-bot ti-chi-bot bot added needs-1-more-lgtm Indicates a PR needs 1 more LGTM. approved labels Nov 21, 2024
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ti-chi-bot bot commented Nov 21, 2024

[APPROVALNOTIFIER] This PR is APPROVED

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

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

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

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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 Nov 21, 2024
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ti-chi-bot bot commented Nov 21, 2024

[LGTM Timeline notifier]

Timeline:

  • 2024-11-21 02:26:04.58065477 +0000 UTC m=+84952.200309285: ☑️ agreed by JaySon-Huang.
  • 2024-11-21 02:29:50.603354916 +0000 UTC m=+85178.223009417: ☑️ agreed by Lloyd-Pottiger.

@ti-chi-bot ti-chi-bot bot merged commit 0f55471 into pingcap:release-7.5 Nov 21, 2024
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3 participants