[IMPALA-401] Impala Avro doesn't support Avro schema evolution

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 1.0, Impala 1.0.1
• Fix Version/s: Impala 1.1
• Environment: CentOS 6.3
• Assignee: Skye Wanderman-Milne
• Reporter: Benyi Wang
• Created: 06/Jun/13 17:25
• Updated: 20/Dec/15 00:05
• Resolved: 26/Jun/13 21:18

Description

Impala avro scanner doesn't use Avro ResolvingDecoder so that it cannot handle Avro schema evolution such as

• add a field
• delete a field
• rename a field
• change data type of a field

Check details and an example here:

https://groups.google.com/a/cloudera.org/d/msg/impala-user/RTgekjCUFIA/nshCX5KXmDgJ