[jira] [Commented] (HIVE-15130) Fixing shifting index issue related to object inspector caching

["Ferdinand Xu (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-15130?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15711005#comment-15711005 ] 

Ferdinand Xu commented on HIVE-15130:
-------------------------------------

+1 pending on the test.

> Fixing shifting index issue related to object inspector caching
> ---------------------------------------------------------------
>
>                 Key: HIVE-15130
>                 URL: https://issues.apache.org/jira/browse/HIVE-15130
>             Project: Hive
>          Issue Type: Sub-task
>          Components: Reader
>            Reporter: Chao Sun
>            Assignee: Chao Sun
>         Attachments: HIVE-15130.1.patch, HIVE-15130.2.patch
>
>
> Hive caches object inspector in memory to avoid recreating the same object.
> However, in {{ArrayWritableObjectInspector}}, the {{equals}} and {{hashCode}} doesn't take account on all attributes of the class, therefore, even though the internal state (e.g., {{adjustedIndex}}) is different, it could still be mapped to the same result. This could cause wrong field index being used when reading Parquet data.



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