Provide clone() method for generated avro-specific objects
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Key: AVRO-964
URL: https://issues.apache.org/jira/browse/AVRO-964
Project: Avro
Issue Type: Improvement
Components: java
Affects Versions: 1.7.0
Reporter: Vyacheslav Zholudev
It would be great to provide a generated clone() method for avro-specific
objects like it is done for equals(), toString() and hashCode() methods.
Due to object re-usage in Hadoop, it is often necessary to clone objects
because they have to be processed all together after e.g. Reducer input has
been read.
Currently I see two ad-hoc options to deal with it:
1) Create potentially lots of tedious code to clone objects manually. This
method is error-prone, since it's easy to forget cloning of some fields after
schema evolution
2) Use DatumWriter and DatumReader to serialize/deserialize objects. This
method works extremely slow (in my experiments 30-40 times slower than method
#1.
So neither of methods is sufficiently good, on the other hand adding a
generated clone() method should be not that complicated.
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