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https://issues.apache.org/jira/browse/KYLIN-4175?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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nichunen resolved KYLIN-4175.
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Resolution: Fixed
> Support secondary hbase storage config for hbase cluster migration
> ------------------------------------------------------------------
>
> Key: KYLIN-4175
> URL: https://issues.apache.org/jira/browse/KYLIN-4175
> Project: Kylin
> Issue Type: Improvement
> Reporter: Shaohui Liu
> Assignee: Shaohui Liu
> Priority: Major
> Fix For: v3.0.0
>
>
> Currently when migrating a kylin cluster from on data center to the other or
> the hbase cluster the kylin depends on will be changed from one cluster to
> the other, there will be a long down time to migrating the history data from
> one cluster to the other or we must rebuild all the history data of cube in
> the other cluster.
> In xiaomi, we added the support of secondary hbase storage and made the kylin
> cluster can query cube data from the old hbase cluster during the migration.
> As a result, the migration is very smooth with minimum down time.
>
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