[IMPALA-7500] Clarify workaround for IMPALA-635

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Impala 3.1.0
• Component/s: Docs
• Target Version: Impala 3.1.0
• Epic Color: ghx-label-8
• Assignee: Alexandra Rodoni
• Reporter: Tim Armstrong
• Created: 28/Aug/18 18:42
• Updated: 29/Aug/18 00:47
• Resolved: 29/Aug/18 00:47

Description

The release note for IMPALA-635 needs a small tweak. The workaround isn't clear that the schema needs to be changed before an Avro file is written.

If a file was written with the old schema then the schema is embedded in the file and Impala will still hit IMPALA-635 when reading the schema from the file.