[jira] [Resolved] (ARROW-15493) [C++][Gandiva] Uninitialized data member causes random gandiva-filter-test failures

["Krisztian Szucs (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-15493?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Krisztian Szucs resolved ARROW-15493.
-------------------------------------
    Fix Version/s: 7.0.0
       Resolution: Fixed

Issue resolved by pull request 12280
[https://github.com/apache/arrow/pull/12280]

> [C++][Gandiva] Uninitialized data member causes random gandiva-filter-test failures
> -----------------------------------------------------------------------------------
>
>                 Key: ARROW-15493
>                 URL: https://issues.apache.org/jira/browse/ARROW-15493
>             Project: Apache Arrow
>          Issue Type: Bug
>          Components: C++ - Gandiva
>            Reporter: Yibo Cai
>            Assignee: Yibo Cai
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 7.0.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> gandiva-filter-test {{TestFilter.TestFilterCache}} fails on Arm, though the bug is not architecure dependent.
> Class member *mode_* is not initialized in one of ExpressionCacheKey constructors [1], but it's used to comapre equality of two instances [2]. It causes flaky gandiva-filter-test failures.
> [1] https://github.com/apache/arrow/blob/master/cpp/src/gandiva/expression_cache_key.h#L55
> [2] https://github.com/apache/arrow/blob/master/cpp/src/gandiva/expression_cache_key.h#L92



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