[IMPALA-12706] Failing DCHECK when querying STRUCT inside a STRUCT for Iceberg metadata table

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Impala 4.4.0
• Component/s: Backend
• Labels: impala-iceberg
• Epic Color: ghx-label-9
• Assignee: Tamas Mate
• Reporter: Tamas Mate
• Created: 11/Jan/24 08:07
• Updated: 15/Jan/24 13:10
• Resolved: 15/Jan/24 13:10

Description

When querying a STRUCT type inside a STRUCT type there is a failing DCHECK.

F0111 09:01:35.626691 15777 descriptors.h:366] 83474e353d7baccd:d966f47c00000000] Check failed: slot_desc->col_path().size() == 1 (2 vs. 1)

While the following is working:

select readable_metrics from functional_parquet.iceberg_query_metadata.data_files;

this fails:

select readable_metrics.i from functional_parquet.iceberg_query_metadata.data_files;

Issue Links

• is caused by: IMPALA-10947 SQL support for querying Iceberg metadata