[jira] [Commented] (AVRO-2127) Throwing more specific exception if an avro file has currupted magic

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/AVRO-2127?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16360772#comment-16360772 ] 

ASF GitHub Bot commented on AVRO-2127:
--------------------------------------

busbey commented on a change in pull request #273: AVRO-2127 Make InvalidAvroMagicException thrown if stream header is corrupted
URL: https://github.com/apache/avro/pull/273#discussion_r167560025
 
 

 ##########
 File path: lang/java/avro/src/main/java/org/apache/avro/file/DataFileReader.java
 ##########
 @@ -47,7 +47,7 @@
                                              DatumReader<D> reader)
     throws IOException {
     if (in.length() < MAGIC.length)
-      throw new IOException("Not an Avro data file");
+      throw new EOFException("Not an Avro data file");
 
 Review comment:
   Will this be confusing? Say I want to take files and throw them at the wall to see what sticks. With this change as-is I'll need to see if the IOE is either EOF or IAM. Is that desirable? Do we gain enough by being able to distinguish the case where the magic header was invalid due to not enough bytes?

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> Throwing more specific exception if an avro file has currupted magic
> --------------------------------------------------------------------
>
>                 Key: AVRO-2127
>                 URL: https://issues.apache.org/jira/browse/AVRO-2127
>             Project: Avro
>          Issue Type: Improvement
>          Components: java
>    Affects Versions: 1.8.2
>            Reporter: Dmitrii Bundin
>            Assignee: Dmitrii Bundin
>            Priority: Minor
>
> Curently we have IOException thrown if an avro file has incorrect magic. 
> It seems reasonable to throw a subclass of IOException to be able to handle incorrect magic (in case length are match) in user code.



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