[jira] [Created] (AVRO-1338) Rewrite records with a reader schema different from the writer schema without losing fields from writer schema.

["Christophe Taton (JIRA)" <ji...@apache.org>]

Christophe Taton created AVRO-1338:
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             Summary: Rewrite records with a reader schema different from the writer schema without losing fields from writer schema.
                 Key: AVRO-1338
                 URL: https://issues.apache.org/jira/browse/AVRO-1338
             Project: Avro
          Issue Type: New Feature
          Components: java
    Affects Versions: 1.7.2
            Reporter: Christophe Taton


Record R is written using schema S1 = record Record { int i = 0 }.
I read R using a my own reader schema S2 = record Record { string s = "" }.
Rewriting R using S2 will discard fields from S1 that are unknown in S2 (that is Record.i is lost).

Ideally, there would be a way to maintain fields from S1 that are invisible through S2.
Writing R back without such loss implies merging S1 and S2 into a single schema that contains all fields from S1 and all fields from S2.


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