[jira] [Updated] (ARROW-1779) [Java] Integration test breaks without zeroing out validity vectors

["Antoine Pitrou (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-1779?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Antoine Pitrou updated ARROW-1779:
----------------------------------
    Component/s: Integration

> [Java] Integration test breaks without zeroing out validity vectors
> -------------------------------------------------------------------
>
>                 Key: ARROW-1779
>                 URL: https://issues.apache.org/jira/browse/ARROW-1779
>             Project: Apache Arrow
>          Issue Type: Sub-task
>          Components: Integration
>            Reporter: Li Jin
>            Priority: Major
>             Fix For: 0.8.0
>
>         Attachments: nested.bad, nested.good, nested.json
>
>
> This is discovered in https://github.com/apache/arrow/pull/1290
> I found one the integration test (nested) failed without zeroing out validity vectors before loading the array from json.
> I have created three files to reproduce this:
> (1) nested.json 
> (2) nested.good (zeroing out validity vector before reading)
> (3) nested.bad (not zeroing out validity vector before reading)
> (1) / (2) and (1) / (3) both pass Java integration test, however (1) / (3) fails C++ test - one of the validity vector in (3) doesn't seem to be read correctly.
> I am not sure what the issue is because I cannot reproduce an error in Java. I am hoping maybe some one more familiar with C++ could take a look and give some insights what's the wrong with (3). 



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