BELUGA BEHR created AVRO-2061:
---------------------------------
Summary: 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: 1.8.2, 1.9.0
Reporter: BELUGA BEHR
Priority: Trivial
{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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