[PARQUET-918] FromParquetSchema API crashes on nested schemas

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: cpp-1.0.0
• Fix Version/s: cpp-1.1.0
• Component/s: parquet-cpp
• Assignee: Itai Incze
• Reporter: Itai Incze
• Created: 22/Mar/17 08:52
• Updated: 10/Apr/17 18:29
• Resolved: 10/Apr/17 18:25

Description

FromParquetSchema@src/parquet/arrow/schema.cc:276 misbehaves by using its column_indices parameter in the second version of the function as indices to the direct schema root fields.
This is problematic with nested schema parquet files - the bug crashes the process by accessing the fields vector out of bounds.

This bug is masked by another bug in the first version of the FromParquetSchema function which constructs a complete indices list the size of the number of schema fields (instead of the # of columns).

The bug is triggered in many significant use-cases, for example when using the arrow::ReadTable API.