hongbin ma created KYLIN-1453:
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Summary: cuboid sharding based on specific column
Key: KYLIN-1453
URL: https://issues.apache.org/jira/browse/KYLIN-1453
Project: Kylin
Issue Type: Improvement
Reporter: hongbin ma
Assignee: hongbin ma
currently cuboid sharding is based on the hash value of the row key. If we
allow computing hash value on a specific column C, then we're actually
partitioning the data w.r.t C. The benefit is that if we later a query with
filter like "where C = 'xyz'", kylin can skip shards. Also for filter like
"where C IN {many candidates}", kylin can prune candidates sent to different
shards
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