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https://issues.apache.org/jira/browse/KYLIN-774?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14555681#comment-14555681
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Shaofeng SHI commented on KYLIN-774:
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Add an "auto_merge_time_ranges" attribute in the cube json file, this is an
array with the times in millisecond, for example:
"auto_merge_time_ranges" : [604800000, 2419200000]
604800000 means merging 7 days' data into a segment; 2419200000 means 28 days;
If user build the cube every day, with each covers 1 day's data; after the 7th
segment be built, a merge job will be automatically triggered; When 28 days
were met, the first 3 weekly segments + the latest 7 daily segments will be
merged into one big segment.
> Automatically merge cube segments
> ---------------------------------
>
> Key: KYLIN-774
> URL: https://issues.apache.org/jira/browse/KYLIN-774
> Project: Kylin
> Issue Type: New Feature
> Components: General, Job Engine, Metadata
> Reporter: Shaofeng SHI
> Assignee: Shaofeng SHI
> Fix For: v0.8.1
>
>
> As time goes on, the number of cube segments increases; If Kylin can
> automatically merge the segments based on user configuration (daily to weekly
> to monthly, etc), that will not only save user's manul effort on merge, but
> also be helpful for the query performance.
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