Nándor Kollár created IMPALA-15701:
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Summary: NullPointerException when loading Iceberg REST catalog
tables with mixed-case column names
Key: IMPALA-15701
URL: https://issues.apache.org/jira/browse/IMPALA-15701
Project: IMPALA
Issue Type: Bug
Reporter: Nándor Kollár
Impala fails to load an Iceberg table from a REST catalog if the table has a
column name with uppercase letters, e.g. "userId". Every statement on the table
fails, including DESCRIBE:
{code:java}
AnalysisException: Error opening Iceberg table 'repro.mixed_case_cols'
CAUSED BY: TableLoadingException: Error opening Iceberg table
'repro.mixed_case_cols'
CAUSED BY: NullPointerException: Cannot invoke
"org.apache.iceberg.types.Types$NestedField.fieldId()" because "field" is null
{code}
To reproduce, create a table with a mixed-case column name in the REST catalog
(e.g. with Spark or through the REST API), then run DESCRIBE or SELECT on it
from Impala.
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