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branch-4.1: [fix](mtmv) Add null-safety to getBaseViewsOneLevel for backward compatibility #64412#64500

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branch-4.1: [fix](mtmv) Add null-safety to getBaseViewsOneLevel for backward compatibility #64412#64500
yiguolei merged 1 commit into
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Cherry-picked from #64412

…atibility (#64412)

Introduced by #56423, the field baseViewsOneLevel may be null for MTMVs
created before that PR. This causes NPE when querying
information_schema.view_dependency:

Cannot invoke java.util.Set.stream() because the return value of
org.apache.doris.mtmv.MTMVRelation.getBaseViewsOneLevel() is null

baseViewsOneLevel is currently only used for
tablefunction/MetadataGenerator, so this change is safe.

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>
@github-actions github-actions Bot requested a review from yiguolei as a code owner June 15, 2026 04:08
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Thank you for your contribution to Apache Doris.
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Please clearly describe your PR:

  1. What problem was fixed (it's best to include specific error reporting information). How it was fixed.
  2. Which behaviors were modified. What was the previous behavior, what is it now, why was it modified, and what possible impacts might there be.
  3. What features were added. Why was this function added?
  4. Which code was refactored and why was this part of the code refactored?
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run buildall

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FE UT Coverage Report

Increment line coverage 0.00% (0/3) 🎉
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FE Regression Coverage Report

Increment line coverage 20.00% (1/5) 🎉
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@github-actions github-actions Bot added the approved Indicates a PR has been approved by one committer. label Jun 16, 2026
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PR approved by at least one committer and no changes requested.

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PR approved by anyone and no changes requested.

@yiguolei yiguolei closed this Jun 16, 2026
@yiguolei yiguolei reopened this Jun 16, 2026
@yiguolei yiguolei merged commit d4b11f0 into branch-4.1 Jun 16, 2026
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3 participants