Cassandra 3.10 added the `duration` type [1], intended to manipulate date-time
values with offsets (for example, `now() - 2y3h`).
The full implementation of the `duration` type in Scylla requires support
for version 5 of the binary protocol, which is not yet available.
In the meantime, this patch patch adds the implementation of the underlying type
for the eventual `duration` type. Included is also the ported test suite from
the reference implementation and additional tests.
Related to #2240.
[1] https://issues.apache.org/jira/browse/CASSANDRA-11873
Signed-off-by: Jesse Haber-Kucharsky <jhaberku@scylladb.com>
Message-Id: <b1e481da103efee82106bf31f261c5a1f4f8d9ca.1499885803.git.jhaberku@scylladb.com>
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