[1.1] Can't create column

[cyril auburtin]

[default@ks] create column family Post with column_type = 'Standard' and
column_metadata = [{column_name: 'user', validation_class: 'UTF8Type'},
{column_name: 'type', validation_class: 'UTF8Type'}] and comment = 'bla';
java.lang.RuntimeException:
org.apache.cassandra.db.marshal.MarshalException: cannot parse 'user' as
hex bytes