Copy from fails to import blob columns

[MichiganL]

Hi,

ycqlsh fails to import blob columns using the copy from command (yugabyte version 2.14.3.1-b1).
I get the following error message:
Failed to import 1 rows: ParseError - Failed to parse 0xff : global name 'BlobType' is not defined, given up without retries Failed to process 1 rows; failed rows written to import_ks_test.err

Steps to reproduce the issue:

docker run --rm -d --name yugabyte yugabytedb/yugabyte:2.14.3.1-b1 bin/yugabyted start --daemon=false

docker exec -it yugabyte /bin/bash

ycqlsh

create keyspace ks;
-- create minimal table with a blob column
create table ks.test(key text primary key, value blob);
insert into ks.test(key, value) values('k1', 0xff);
copy ks.test to 'test.dump';

-- copying the table from the dump fails
copy ks.test from 'test.dump';

Failed to import 1 rows: ParseError - Failed to parse 0xff : global name 'BlobType' is not defined,  given up without retries
Failed to process 1 rows; failed rows written to import_ks_test.err

Adding the import "from cqlshlib.formatting import BlobType" to cqlsh/copyutil.py fixed the issue for me.