Mohit, You can use this patch to suit your need: https://issues.apache.org/jira/browse/PIG-2579
New fields in Avro schema descriptor file need to have a non-null default value. Hence, using the new schema file, you should be able to read older data as well. Try it out. It is very straight forward. Hope this helps! On Sun, Aug 5, 2012 at 12:01 AM, Mohit Anchlia <[email protected]> wrote: I've heard that Avro provides a good way of dealing with changing schemas. > I am not sure how it could be done without keeping some kind of structure > along with the data. Are there any good examples and documentation that I > can look at? > -N
