Shaofeng SHI created KYLIN-895:
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Summary: Add "retension" attribute for cube instance, and
automatically drop the oldest segment when exceeds retension
Key: KYLIN-895
URL: https://issues.apache.org/jira/browse/KYLIN-895
Project: Kylin
Issue Type: Improvement
Components: Metadata
Affects Versions: v0.8.1
Reporter: Shaofeng SHI
Assignee: Shaofeng SHI
Fix For: v0.8.1
Sometimes user want to only keep a certain range data in cube, for example only
1 month; Kylin should allow define such a "retension" at cube instance level;
When a new segment is built, check and drop the oldest segment from the head if
the "retension" is exceeded;
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