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https://issues.apache.org/jira/browse/SQOOP-936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13598006#comment-13598006
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Jarek Jarcec Cecho commented on SQOOP-936:
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It's a simple patch so I'm giving +1 here.
                
> Classwriter should check if columnNames generated are null before accessing 
> them
> --------------------------------------------------------------------------------
>
>                 Key: SQOOP-936
>                 URL: https://issues.apache.org/jira/browse/SQOOP-936
>             Project: Sqoop
>          Issue Type: Bug
>    Affects Versions: 1.4.2, 1.4.3
>         Environment: Netezza database tests
>            Reporter: Venkat Ranganathan
>            Assignee: Venkat Ranganathan
>            Priority: Minor
>              Labels: trivial
>             Fix For: 1.4.4
>
>         Attachments: SQOOP-936.patch
>
>
> If a table does not at the time of DROP, Netezza throws an exception but also 
> sets the transaction as ignored (all changes through the connection will be 
> ignored until the txn is either rollback or committed.   While adding more 
> tests, I missed the rollback and the create table was ignored, and 
> subsequently ClassWriter.cleanColNames() threw NPE.   I am fixing Netezza 
> tests also, but we should check for this and throw a IOException instead of 
> failing with NPE

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