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branch-4.0: [fix](test) Cast variant subcolumn as json in variant_hirachinal for stable output #63828 - #63855

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branch-4.0: [fix](test) Cast variant subcolumn as json in variant_hirachinal for stable output #63828#63855
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Cherry-picked from #63828

@hello-stephen

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Thank you for your contribution to Apache Doris.
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@hello-stephen

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run buildall

@github-actionsgithub-actionsBot added the approved Indicates a PR has been approved by one committer. label Jun 24, 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.

…stable output (#63828)
cast(v['c'] as string) on a heterogeneous variant column can produce
different whitespace formatting (e.g. "[1, 2, 3]" vs "[1,2,3]")
depending on session variables fuzzed by use_fuzzy_session_variable
(batch_size, enable_fold_constant_by_be, etc.), causing intermittent
regression failures. Casting to json normalizes the serialization path
and is stable across fuzzed execution configs (verified 50/50 runs).
@morrySnow
morrySnowforce-pushed the auto-pick-63828-branch-4.0 branch from 6da1dd4 to e98db5eCompareAugust 31, 2026 07:08
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@hello-stephen@morningman@csun5285