[jira] [Resolved] (IMPALA-9732) Improve exceptions of unsupported HdfsTableSink formats

["Tamas Mate (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IMPALA-9732?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tamas Mate resolved IMPALA-9732.
--------------------------------
    Fix Version/s: Impala 4.0
       Resolution: Fixed

> Improve exceptions of unsupported HdfsTableSink formats
> -------------------------------------------------------
>
>                 Key: IMPALA-9732
>                 URL: https://issues.apache.org/jira/browse/IMPALA-9732
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Frontend
>    Affects Versions: Impala 3.4.0
>            Reporter: Tamas Mate
>            Assignee: Tamas Mate
>            Priority: Major
>             Fix For: Impala 4.0
>
>
> For unsupported table writes an IllegalStateException is thrown during planning [here|https://github.com/apache/impala/blame/e46bbf29d43f1d3b118933d06c63ceb135beaf9c/fe/src/main/java/org/apache/impala/planner/HdfsTableSink.java#L144]:
> {code:java}
>  Preconditions.checkState(false, "Unsupported TableSink format(s): " + Joiner.on(',').join(unsupportedFormats));
> {code}
> This exception could be improved by changing the IllegalStateException to a more meaningful one and the "TableSink format" to a term which is familiar for the users.
> Additionally, the exception is thrown generally when a table has a partition with unsupported format, dynamic partitioning is not taken into consideration. The check could be extended to only throw exception when the partition that is being written is unsupported.



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