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Posted to issues@impala.apache.org by "Csaba Ringhofer (Jira)" <ji...@apache.org> on 2026/09/10 11:51:00 UTC

[jira] [Resolved] (IMPALA-15139) Add read support for DELTA_LENGTH_BYTE_ARRAY Parquet encoding

     [ https://issues.apache.org/jira/browse/IMPALA-15139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Csaba Ringhofer resolved IMPALA-15139.
--------------------------------------
    Fix Version/s: Impala 5.0.0
       Resolution: Fixed

> Add read support for DELTA_LENGTH_BYTE_ARRAY Parquet encoding
> -------------------------------------------------------------
>
>                 Key: IMPALA-15139
>                 URL: https://issues.apache.org/jira/browse/IMPALA-15139
>             Project: IMPALA
>          Issue Type: Sub-task
>          Components: Backend
>            Reporter: Zoltán Borók-Nagy
>            Assignee: Mihaly Szjatinya
>            Priority: Critical
>             Fix For: Impala 5.0.0
>
>
> Parquet says DELTA_LENGTH_BYTE_ARRAY is preferred over PLAIN encoding for byte arrays:
> [https://github.com/apache/parquet-format/blob/master/Encodings.md#DELTALENGTH]
> Latest Trino also switched to this encoding: [https://github.com/trinodb/trino/commit/dc304f4a47c1b0d68d39557b6c6bbbd87ebb4743]



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