Create a LoadPushDown implementation for CassandraStorage
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Key: CASSANDRA-2391
URL: https://issues.apache.org/jira/browse/CASSANDRA-2391
Project: Cassandra
Issue Type: Improvement
Reporter: Jeremy Hanna
Priority: Minor
A LoadPushDown is nice for use with Pig because if you do something like:
{code}
rows = LOAD 'cassandra://ks/cf' USING CassandraStorage();
A = FOREACH rows GENERATE $0;
{code}
It would push down the projection and only get the keys from Cassandra instead
of all of the rows - it allows Pig to optimize what it gets from Cassandra when
it looks at the pig script. The script above might not be the best example but
projections would allow pig to optimize retrieval from Cassandra in something
like that.
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