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Radim Kolar commented on CASSANDRA-3031:
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case with pycassa is that python has variable sized integers builtin as type
long and it is dynamic typed language. Not much harm from returning long
instead of int to python app.
Java as static typed language needs fixed size integers to match its int and
long types.
I think that you are worried too much about backward CQL compatibility.
Cassandra clusters are operated by responsible persons and It do not break
existing clusters. Fixing schema creating CQL scripts is trivial (if they
exists).
Lets say we change CQL int from int8 to int4. It will create new cluster with
unexpected schema, but application will get an exception on first insert, you
cant validate int8 in int4 field. Admin can fix schema via cassandra-cli or fix
CQL script. Its fail fast scenario.
> Add 4 byte integer type
> -----------------------
>
> Key: CASSANDRA-3031
> URL: https://issues.apache.org/jira/browse/CASSANDRA-3031
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Affects Versions: 0.8.4
> Environment: any
> Reporter: Radim Kolar
> Priority: Minor
> Labels: hector, lhf
> Fix For: 1.0
>
> Attachments: apache-cassandra-0.8.4-SNAPSHOT.jar, src.diff, test.diff
>
>
> Cassandra currently lacks support for 4byte fixed size integer data type.
> Java API Hector and C libcassandra likes to serialize integers as 4 bytes in
> network order. Problem is that you cant use cassandra-cli to manipulate
> stored rows. Compatibility with other applications using api following
> cassandra integer encoding standard is problematic too.
> Because adding new datatype/validator is fairly simple I recommend to add
> int4 data type. Compatibility with hector is important because it is most
> used Java cassandra api and lot of applications are using it.
> This problem was discussed several times already
> http://comments.gmane.org/gmane.comp.db.hector.user/2125
> https://issues.apache.org/jira/browse/CASSANDRA-2585
> It would be nice to have compatibility with cassandra-cli and other
> applications without rewriting hector apps.
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