Shaofeng SHI created KYLIN-1385: ----------------------------------- Summary: Enhance FactDistinctColumnsJob to use multiple reducers Key: KYLIN-1385 URL: https://issues.apache.org/jira/browse/KYLIN-1385 Project: Kylin Issue Type: Improvement Components: Job Engine Affects Versions: v1.2, v2.0 Reporter: Shaofeng SHI Assignee: Shaofeng SHI Fix For: v2.1
So far the FactDistinctColumnsJob is using 1 reducer to merge the distinct values for all dimension columns on fact table. When there are 1 or multiple ultra high cardinality columns, it couldn't gain concurrency; It should dispatch the workload to multiple reducers. -- This message was sent by Atlassian JIRA (v6.3.4#6332)