[PARQUET-188] Parquet writes columns out of order (compared to the schema)

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.6.0
• Component/s: parquet-mr
• Assignee: Ryan Blue
• Reporter: Colin Marc
• Created: 23/Feb/15 13:23
• Updated: 07/Apr/15 20:46
• Resolved: 09/Mar/15 20:15

Description

When building from master, parquet seems to write row groups with the columns in arbitrary orders, not in the same order as the schema. This appears to happen regardless of the OutputFormat or WriteSupport used.

This breaks implementations that assume the columns will be in a specific order, in particular impala.