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https://issues.apache.org/jira/browse/KYLIN-6001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17928974#comment-17928974
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ASF GitHub Bot commented on KYLIN-6001:
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yhcast0 merged PR #2254:
URL: https://github.com/apache/kylin/pull/2254
> [Metadata] Kylin4 metadata cannot be directly upgraded to Kylin5. After
> customers migrate the metadata, they still need to rebuild models and other
> components.
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: KYLIN-6001
> URL: https://issues.apache.org/jira/browse/KYLIN-6001
> Project: Kylin
> Issue Type: Bug
> Affects Versions: 5.0.0
> Reporter: Guoliang Sun
> Priority: Major
>
> Current method for upgrading from Kylin4 to Kylin5:
> Back up the Kylin4 metadata, migrate it to Kylin5 using the data migration
> script, and then restore the migrated data.
> Issue:
> After restoring the Kylin5 data, the models need to be rebuilt before they
> can be used.
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