sl255051 opened a new issue, #10668:
URL: https://github.com/apache/iceberg/issues/10668
### Apache Iceberg version
None
### Query engine
None
### Please describe the bug 🐞
PartitionSpec.Builder can only build a partition spec when column names
match in a case-sensitive way.
I've written a unit test (included below) that reproduces the issue. You can
add this unit test to the TestPartitionSpecInfo class. The test fails at
`PartitionSpec.builderFor(schema).identity("DATA")` because the schema's column
is defined with the name "data" but the builder is looking for "DATA".
```
@TestTemplate
public void testSpecInfoPartitionedTableCaseInsensitive() {
PartitionSpec spec =
PartitionSpec.builderFor(schema).identity("DATA").build();
TestTables.TestTable table = TestTables.create(tableDir, "test", schema,
spec, formatVersion);
assertThat(table.spec()).isEqualTo(spec);
assertThat(table.spec().lastAssignedFieldId()).isEqualTo(spec.lastAssignedFieldId());
assertThat(table.specs())
.containsExactly(entry(spec.specId(), spec))
.doesNotContainKey(Integer.MAX_VALUE);
}
```
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