[jira] [Commented] (DRILL-4006) As json reader reads a field with empty lists, IOOB could happen

["Khurram Faraaz (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DRILL-4006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15087241#comment-15087241 ] 

Khurram Faraaz commented on DRILL-4006:
---------------------------------------

Verified Fix on Drill 1.4 git commit ID: 32b85160, using data attached in this JIRA. IOB Exception was not seen instead query returned correct results.

> As json reader reads a field with empty lists, IOOB could happen
> ----------------------------------------------------------------
>
>                 Key: DRILL-4006
>                 URL: https://issues.apache.org/jira/browse/DRILL-4006
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Storage - JSON
>            Reporter: Sean Hsuan-Yi Chu
>            Assignee: Sean Hsuan-Yi Chu
>             Fix For: 1.3.0
>
>         Attachments: a.json, b.json, c.json
>
>
> If a field in a json file has many empty lists before a non-empty list, there could be an IOOB exception.
> Running the following query on the folder with files in the attachment can reproduce the observation:
> {code}
> select a from`folder`
> {code}
> Exception:
> org.apache.drill.common.exceptions.UserRemoteException: DATA_READ ERROR: index: 4448, length: 4 



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