[Bug] Hive SELECT on a BLOB column fails with ClassCastException

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Paimon version
master @ a5e87eb (2.1-SNAPSHOT)

Compute Engine
Hive

Minimal reproduce step

1. Create a Paimon table with a BLOB column and write one row.
2. Read it from Hive: SELECT * FROM t;

The query always fails with:

java.lang.ClassCastException: org.apache.paimon.data.BlobData cannot be cast to [B

PaimonObjectInspectorFactory.create() groups case BLOB: with BINARY/VARBINARY and returns Hive's JavaBinaryObjectInspector, whose getPrimitiveJavaObject casts its input to byte[]. The read path hands it a Blob instead: InternalRow.createFieldGetter maps case BLOB: to row.getBlob(pos).

The Spark connector (DataConverter, ((Blob) o).toData()) and the Flink connector (FlinkRowDataWithBlob) already convert at the engine boundary; Hive is the only one missing it.

What doesn't meet your expectations?
Expected: reading a BLOB column from Hive returns its binary content.
Actual: every such query fails with ClassCastException.

Anything else?
Introduced by #8070, whose tests only feed byte[] directly, so the defect was never exercised.

Are you willing to submit a PR?

• I'm willing to submit a PR!