[jira] [Commented] (AVRO-2061) Improve Invalid File Format Error Message

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[jira] [Commented] (AVRO-2061) Improve Invalid File Format Error Message

JIRA jira@apache.org

    [ https://issues.apache.org/jira/browse/AVRO-2061?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16116446#comment-16116446 ]

Nandor Kollar commented on AVRO-2061:
-------------------------------------

Looks good to me.

> Improve Invalid File Format Error Message
> -----------------------------------------
>
>                 Key: AVRO-2061
>                 URL: https://issues.apache.org/jira/browse/AVRO-2061
>             Project: Avro
>          Issue Type: Improvement
>          Components: java
>    Affects Versions: 1.9.0, 1.8.2
>            Reporter: BELUGA BEHR
>            Assignee: BELUGA BEHR
>            Priority: Trivial
>         Attachments: AVRO-2061.1.patch
>
>
> {code:title=org.apache.avro.file.DataFileStream<D>}
>     try {
>       vin.readFixed(magic);                         // read magic
>     } catch (IOException e) {
>       throw new IOException("Not a data file.", e);
>     }
>     if (!Arrays.equals(DataFileConstants.MAGIC, magic))
>       throw new IOException("Not a data file.");
> {code}
> Please consider improving the error message here.  I just saw a MapReduce job fail with an IOException with the message "Not a data file."  There was definitely data files in the input directory, however, they were not Avro files. It would have been much more helpful if it told me that.



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