Database Reference
In-Depth Information
Figure 2-17
.
Structure of twitter keyspace
3.
Let's try to store some data in the column family:
set default[1]['type']='bytes'; gives an error
Figure 2-18
shows that this produces an error.
Figure 2-18
.
Error while storing string value but column value is of bytes type
Since the comparator and validator are set to default data type
(e.g.,
BytesType
), Cassandra-cli is not able to parse and store such
requests.
4.
To get step 3 working, we need to use the
assume
function to
provide some hint:
assume default keys as UTF8Type;
assume default comparator as UTF8Type;
assume default validator as UTF8Type;
5.
Now let's try to change the comparator from
BytesType
to
UTF8Type
:
update column family default with
comparator='UTF8Type';
gives error
