Max Burke created ARROW-11452:
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Summary: [Rust] Parquet reader cannot read file where a struct
column has the same name as struct member columns
Key: ARROW-11452
URL: https://issues.apache.org/jira/browse/ARROW-11452
Project: Apache Arrow
Issue Type: Bug
Reporter: Max Burke
Attachments: structs.parquet
For example, given the schema:
count: struct<min: int64 not null, max: int64 not null, mean: int64 not null,
count: uint64 not null, sum: int64 not null, variance: int64 not null> not null
child 0, min: int64 not null
child 1, max: int64 not null
child 2, mean: int64 not null
child 3, count: uint64 not null
child 4, sum: int64 not null
child 5, variance: int64 not null
ul_observation_date: struct<min: timestamp[us] not null, max: timestamp[us] not
null, mean: timestamp[us] not null, count: uint64 not null, sum: timestamp[us]
not null, variance: timestamp[us] not null> not null
child 0, min: timestamp[us] not null
child 1, max: timestamp[us] not null
child 2, mean: timestamp[us] not null
child 3, count: uint64 not null
child 4, sum: timestamp[us] not null
child 5, variance: timestamp[us] not null
The array reader performs dictionary lookups for the type of columns of types
such as ul_observation_date, but when it looks up the field `count` it gets the
definition not of the ul_observation_date.count field but of the `count`
struct.
Attached is a sample file that exhibits this behavior.
[^structs.parquet]
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