QuakeWang opened a new pull request, #8370:
URL: https://github.com/apache/paimon/pull/8370
### Purpose
`VectorType` was not supported in common row-to-column conversion and
compacted row serialization. This left common data paths incomplete for vector
columns, and nullable vector columns also need to preserve fixed-size dense
child offsets for vectorized consumers such as Arrow writers.
This PR adds a heap vector column vector, supports `VectorType` in
`RowToColumnConverter` and `RowCompactedSerializer`, and rejects vector fields
from key/comparator paths because vectors are not comparable.
### Tests
- `mvn -pl paimon-common
-Dtest=RowToColumnConverterTest#testConvertVectorType+testConvertNullableVectorType+testConvertVectorTypeWithInvalidLength+testConvertVectorTypeWithNullElement
test`
- `mvn -pl paimon-common -DfailIfNoTests=false
'-Dtest=RowCompactedSerializerTest$VectorTypesTest' test`
- `mvn -pl paimon-core
-Dtest=SchemaValidationTest#testVectorTypeCanNotBeKey test`
- `mvn -pl paimon-arrow -am -DfailIfNoTests=false
-Dtest=ArrowVectorizedBatchConverterTest#testNullableVectorColumnFromRowToColumnConverter
test`
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