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https://issues.apache.org/jira/browse/KYLIN-728?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ZhouQianhao resolved KYLIN-728.
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Resolution: Done
> IGTStore implementation which use disk when memory runs short
> -------------------------------------------------------------
>
> Key: KYLIN-728
> URL: https://issues.apache.org/jira/browse/KYLIN-728
> Project: Kylin
> Issue Type: New Feature
> Components: Storage - HBase
> Affects Versions: v0.8.1
> Reporter: ZhouQianhao
> Assignee: ZhouQianhao
> Fix For: v0.8.1
>
>
> The main idea is use disk when memory runs short. Right now both cuboid and
> intermediate AggregationCache stays in memory. At least the cuboid can go to
> disk if necessary. So at minimal we only need one AggregationCache in memory
> at a time. And the biggest AggregationCache is about the size of base cuboid.
> Cuboid is stored in GTSimpleMemStore currently. Replace it with a flexible
> store that can switch between memory and disk. And you need to budget the
> total free memory to command the memory-to-disk switches smartly.
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