XIE FAN created KYLIN-2518:
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Summary: Improve putRowKeyToHLL() performance
Key: KYLIN-2518
URL: https://issues.apache.org/jira/browse/KYLIN-2518
Project: Kylin
Issue Type: Improvement
Reporter: XIE FAN
Assignee: XIE FAN
The method putRowKeyToHLL() in FactDistinctColumnsMapper can be very slow when
sample rate is high. After carefully profiling, we believe that it's
performance can be improved by modifying it's hash method.
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