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From "Nikolay Sokolov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-17448) ArrayIndexOutOfBoundsException on ORC tables after adding a struct field
Date Mon, 04 Sep 2017 05:20:00 GMT

    [ https://issues.apache.org/jira/browse/HIVE-17448?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16152133#comment-16152133
] 

Nikolay Sokolov commented on HIVE-17448:
----------------------------------------

Is not reproducing when there is no trailing fields -- struct comparison seem to trim unmatched
fields, but outside (row's) struct comparison does not take into account different number
of fields.
Attaching possible naive patch.

> ArrayIndexOutOfBoundsException on ORC tables after adding a struct field
> ------------------------------------------------------------------------
>
>                 Key: HIVE-17448
>                 URL: https://issues.apache.org/jira/browse/HIVE-17448
>             Project: Hive
>          Issue Type: Bug
>          Components: ORC
>    Affects Versions: 2.1.1
>         Environment: Reproduced on Dataproc 1.1, 1.2 (Hive 2.1).
>            Reporter: Nikolay Sokolov
>            Priority: Minor
>         Attachments: HIVE-17448.1-branch-2.1.patch
>
>
> When ORC files have been created with older schema, which had smaller set of struct fields,
and schema have been changed to one with more struct fields, and there are sibling fields
of struct type going after struct itself, ArrayIndexOutOfBoundsException is being thrown.
Steps to reproduce:
> {code:none}
> create external table test_broken_struct(a struct<f1:int, f2:int>, b int);
> insert into table test_broken_struct 
>     select named_struct("f1", 1, "f2", 2), 3;
> drop table test_broken_struct;
> create external table test_broken_struct(a struct<f1:int, f2:int, f3:int>, b int);
> select * from test_broken_struct;
> {code}
> Same scenario is not causing crash on hive 0.14.



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