[IMPALA-8131] Impala is unable to read Parquet decimal columns with higher scale than table metadata

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: Impala 4.1.0
• Component/s: Backend
• Labels: decimal parquet
• Target Version: Product Backlog
• Epic Color: ghx-label-1
• Assignee: Zoltán Borók-Nagy
• Reporter: Sahil Takiar
• Created: 28/Jan/19 17:33
• Updated: 25/Jul/21 20:28
• Resolved: 14/Jul/21 13:14

Description

Similar to IMPALA-7087, except we should allow Impala to read Parquet data stored with a higher scale into a table with lower scale. The SQL Standard allows for this behavior, and several other databases do this as well.

More information on this can be found in this comment of IMPALA-7087