RussellSpitzer opened a new issue, #4581:
URL: https://github.com/apache/iceberg/issues/4581
Because of the String -> Fixed Binary conversion the readers and writers are
both incorrect.
The vectorized reader initializes a FixedBinary reader on a column we report
is a String causing an unsupported reader exception.
```java
java.lang.UnsupportedOperationException: Unsupported type: UTF8String
at
org.apache.iceberg.arrow.vectorized.ArrowVectorAccessor.getUTF8String(ArrowVectorAccessor.java:82)
at
org.apache.iceberg.spark.data.vectorized.IcebergArrowColumnVector.getUTF8String(IcebergArrowColumnVector.java:140)
at
org.apache.spark.sql.catalyst.expressions.GeneratedClass$GeneratedIteratorForCodegenStage1.sort_addToSorter_0$(Unknown
Sour
```
The writer is broken because it gets String Columns from Spark but needs to
write fixed binary.
Something like this needed as a fix
```java
private static PrimitiveWriter<UTF8String> uuids(ColumnDescriptor desc) {
return new UUIDWriter(desc);
}
private static class UUIDWriter extends PrimitiveWriter<UTF8String> {
private ByteBuffer buffer = ByteBuffer.allocate(16);
private UUIDWriter(ColumnDescriptor desc) {
super(desc);
}
@Override
public void write(int repetitionLevel, UTF8String string) {
UUID uuid = UUID.fromString(string.toString());
buffer.rewind();
buffer.putLong(uuid.getMostSignificantBits());
buffer.putLong(uuid.getLeastSignificantBits());
buffer.rewind();
column.writeBinary(repetitionLevel,
Binary.fromReusedByteBuffer(buffer));
}
}
```
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
