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[BugFix] fix column overflow when handle too large partial update (backport #49054) #49477

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merged 2 commits into from
Aug 8, 2024

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@mergify mergify bot commented Aug 7, 2024

Why I'm doing:

In current implementation, when handle partial column update, we will try to build the column to be updated with segment granularity, it will lead to overflow. E.g.

  1. If we have a ARRAY column to be update, In the beginning, because the data in the table does not contain arrays yet, we will slice the segment file with a size of 1GB, so a segment file may contain a large number of rows. We can assume that there are 500w rows in a tablet.
  2. And in a ArraryColumn struct, we store offset of array using uint32_t , that means we can only have 4,294,967,295 items in a ArraryColumn.
  3. When items in one array is larger than 900, which is large than 4,294,967,295, so overflow happens.

What I'm doing:

Processing updates involving large amounts of data in batches, each batch will be limit by partial_update_memory_limit_per_worker.

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
    • 3.3
    • 3.2
    • 3.1
    • 3.0
    • 2.5

This is an automatic backport of pull request #49054 done by [Mergify](https://mergify.com). ## Why I'm doing: In current implementation, when handle partial column update, we will try to build the column to be updated with segment granularity, it will lead to overflow. E.g. 1. If we have a `ARRAY` column to be update, In the beginning, because the data in the table does not contain arrays yet, we will slice the segment file with a size of 1GB, so a segment file may contain a large number of rows. We can assume that there are 500w rows in a tablet. 2. And in a `ArraryColumn` struct, we store offset of array using uint32_t , that means we can only have 4,294,967,295 items in a `ArraryColumn`. 3. When items in one array is larger than 900, which is large than 4,294,967,295, so overflow happens.

What I'm doing:

Processing updates involving large amounts of data in batches, each batch will be limit by partial_update_memory_limit_per_worker.

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

…9054)

Signed-off-by: luohaha <[email protected]>
(cherry picked from commit 3b682c7)

# Conflicts:
#	gensrc/proto/olap_file.proto
@mergify mergify bot added the conflicts label Aug 7, 2024
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mergify bot commented Aug 7, 2024

Cherry-pick of 3b682c7 has failed:

On branch mergify/bp/branch-3.3/pr-49054
Your branch is up to date with 'origin/branch-3.3'.

You are currently cherry-picking commit 3b682c7027.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   be/src/common/config.h
	modified:   be/src/storage/rowset/horizontal_update_rowset_writer.cpp
	modified:   be/src/storage/rowset/rowset.h
	modified:   be/src/storage/rowset/rowset_meta.h
	modified:   be/src/storage/rowset/rowset_writer.cpp
	modified:   be/src/storage/rowset_column_update_state.cpp
	modified:   be/src/storage/rowset_column_update_state.h
	modified:   be/test/storage/rowset_column_partial_update_test.cpp

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   gensrc/proto/olap_file.proto

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

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mergify bot commented Aug 7, 2024

@mergify[bot]: Backport conflict, please reslove the conflict and resubmit the pr

@mergify mergify bot closed this Aug 7, 2024
@mergify mergify bot deleted the mergify/bp/branch-3.3/pr-49054 branch August 7, 2024 05:54
@luohaha luohaha restored the mergify/bp/branch-3.3/pr-49054 branch August 7, 2024 15:25
@luohaha luohaha reopened this Aug 7, 2024
@wanpengfei-git wanpengfei-git enabled auto-merge (squash) August 7, 2024 15:26
Signed-off-by: Yixin Luo <[email protected]>
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sonarcloud bot commented Aug 7, 2024

@luohaha luohaha disabled auto-merge August 8, 2024 15:28
@luohaha luohaha merged commit 1ea843e into branch-3.3 Aug 8, 2024
30 of 31 checks passed
@luohaha luohaha deleted the mergify/bp/branch-3.3/pr-49054 branch August 8, 2024 15:29
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