Sqoop import parquet error

Below error occurs only while importing the data as parquet file

Sqoop error:
:46 ERROR sqoop.Sqoop: Got exception running Sqoop: org.kitesdk
.data.ValidationException: Namespace sqoop-import is not alphanumeric (plus ’
')
org.kitesdk.data.ValidationException: Namespace sqoop-import is not alphanume
ric (plus '
’)

Sqoop command:
sqoop import --connect jdbc:mysql://ip-172-31-13-154/dstore2 --username ****** --password ****** --table ORDERS --target-dir /user/nitinchhabriadummy4362/problemstmts/problem4/sqoop-import/productsparquet/ --as-parquetfile

Thank you in advance.