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branch-4.2: [fix](nereids) Do not turn invalid UTF-8 from BE constant folding into U+FFFD #69143 - #70024
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…o U+FFFD ### What problem does this PR solve? Related PR: apache#69143 Problem Summary: BE 折叠返回非法 UTF-8 时 FE 静默替换成 U+FFFD，改变值 Backport adaptation: Keep source and expected results unchanged; place the regression suite under branch-4.2 nereids_p0/expression/fold_constant after its directory rename. Replace Java 17 HexFormat in tests with the existing Guava BaseEncoding API because the branch compiles against Java 11 APIs. ### Release note BE 折叠返回非法 UTF-8 时 FE 静默替换成 U+FFFD，改变值 ### Check List (For Author) - Test: Unit Test — org.apache.doris.nereids.trees.expressions.LiteralTest; FE Checkstyle passed. Cluster regression tests were not run for this commit. - Behavior changed: Yes, fixes the behavior described above. - Does this need documentation: No (cherry picked from commit 6c27d4d)
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FE UT Coverage ReportIncrement line coverage |
yiguolei
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Nov 3, 2026
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PR approved by anyone and no changes requested. |
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picked from master #69143