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Aaron Kimball commented on HADOOP-6323: --------------------------------------- The metadata field is required in all SerializerBase implementations due to this method in the SerializerBase signature: {code} public abstract Map<String, String> getMetadata() throws IOException; {code} You're right though, AvroGenericSerialization will only accept() if CLASS_KEY is set and it's assignable to AvroReflectSerializable. > Serialization should provide comparators > ---------------------------------------- > > Key: HADOOP-6323 > URL: https://issues.apache.org/jira/browse/HADOOP-6323 > Project: Hadoop Common > Issue Type: New Feature > Components: io > Reporter: Doug Cutting > Assignee: Aaron Kimball > Attachments: HADOOP-6323.2.patch, HADOOP-6323.3.patch, > HADOOP-6323.4.patch, HADOOP-6323.5.patch, HADOOP-6323.6.patch, > HADOOP-6323.patch > > > The Serialization interface should permit one to create raw comparators. -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.