Deltalake-sink does not support decimal array data type

[xuefengze]

rw-streaming risingwave_stream::task::stream_manager: actor exit with error actor_id=21 error=Executor error: Sink error: DeltaLake error: convert record batch error: Convert from arrow error: Cast error: Casting from LargeBinary to Decimal128(10, 0) not supported

in spark:

create table delta.`s3a://deltalake/decimal`(id int, d ARRAY<decimal>) using delta;

rw:

CREATE TABLE decimal_test (
  id int,
  d decimal[]
);

INSERT INTO decimal_test VALUES (1, array[]::decimal[]);

create sink decimal_sink from decimal_test
with (
    connector = 'deltalake',
    type = 'append-only',
    force_append_only='true',
    location = 's3a://deltalake/decimal',
    s3.access.key = 'hummockadmin',
    s3.secret.key = 'hummockadmin',
    s3.endpoint = 'http://minio-0:9301'
);

[chenzl25]

cc @ZENOTME It seems the Array of the decimal type is still being converted into LargeBinary.