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Posted to issues@flink.apache.org by "Timo Walther (Jira)" <ji...@apache.org> on 2026/05/05 16:34:00 UTC

[jira] [Closed] (FLINK-39601) Add UTF-8 validation utilities and StringData.fromUtf8Bytes connector API

     [ https://issues.apache.org/jira/browse/FLINK-39601?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Timo Walther closed FLINK-39601.
--------------------------------
    Fix Version/s: 2.4.0
       Resolution: Fixed

Fixed in master: a645e5a479cd685cf26421d7ce34c5f8f3cf68fd

> Add UTF-8 validation utilities and StringData.fromUtf8Bytes connector API
> -------------------------------------------------------------------------
>
>                 Key: FLINK-39601
>                 URL: https://issues.apache.org/jira/browse/FLINK-39601
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Table SQL / API
>            Reporter: Gustavo de Morais
>            Assignee: Gustavo de Morais
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 2.4.0
>
>
> Foundation for FLIP-568. Adds the validator and the {{@PublicEvolving}} connector API, no SQL surface yet.
>  * {{StringUtf8Utils}} - new {{firstInvalidUtf8ByteIndex(byte[], int, int)}} validator (Flink-style branches reusing the existing {{decodeUTF8Strict}} algorithm).
>  * {{EncodingUtils.isValidUtf8(byte[])}} / {{(byte[], int, int)}} - thin null-tolerant predicate delegating to the validator.
>  * {{BinaryStringData.fromUtf8Bytes(byte[])}} / {{(byte[], int, int)}} - validating factory; returns {{null}} on null input (matches Spark's {{{}UTF8String.fromBytes{}}}), throws {{IllegalArgumentException}} with the byte index on invalid UTF-8.
>  * {{StringData.fromUtf8Bytes}} - public-evolving interface methods that delegate.



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