Navis created HIVE-8397:
---------------------------
Summary: Approximated cardinality with HuperLogLog UDAF
Key: HIVE-8397
URL: https://issues.apache.org/jira/browse/HIVE-8397
Project: Hive
Issue Type: Improvement
Components: UDF
Reporter: Navis
Assignee: Navis
Priority: Trivial
Useful sometimes for quick estimation of bulk data.
{noformat}
select hll(key), hll(value) from src;
{noformat}
Also can be used with hive.fetch.task.aggr=true;
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
