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https://issues.apache.org/jira/browse/KYLIN-2986?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhong Yanghong reassigned KYLIN-2986:
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Assignee: Zhong Yanghong (was: Wang, Gang)
> Improve the way of parallel segment building
> --------------------------------------------
>
> Key: KYLIN-2986
> URL: https://issues.apache.org/jira/browse/KYLIN-2986
> Project: Kylin
> Issue Type: Improvement
> Reporter: Zhong Yanghong
> Assignee: Zhong Yanghong
> Priority: Trivial
>
> Currently parallel segment building is allowed. However, there's few
> constraints, which may lead to several issues. For example:
> # Two jobs for the same time range is triggered simultaneously, which is
> meaningless.
> # There's overlap between segments to be build by parallel jobs
> To avoid these issues, we should follow three rule checking:
> # A new segment for a job should not have overlap with existing new segment
> # A new segment for a job can have overlap with existing ready segments.
> However, it should cover them and its relative complement should be empty
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