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Posted to dev@kylin.apache.org by "Luke Han (JIRA)" <ji...@apache.org> on 2015/07/13 04:37:05 UTC
[jira] [Updated] (KYLIN-599) Near real-time support
[ https://issues.apache.org/jira/browse/KYLIN-599?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Luke Han updated KYLIN-599:
---------------------------
Fix Version/s: (was: v0.7.2)
v0.8.1
> Near real-time support
> ----------------------
>
> Key: KYLIN-599
> URL: https://issues.apache.org/jira/browse/KYLIN-599
> Project: Kylin
> Issue Type: New Feature
> Components: General
> Reporter: liyang
> Assignee: liyang
> Fix For: v0.8.1
>
> Attachments: Kylin 0.7.x March.pdf
>
>
> (From Jiang Xu in dev mailing list)
> 1. Kafka + storm will build inverted index in memory. These index will be inserted into hbase by batch (e.g. every 5 minutes).
> 2. The inverted index in hbase will keep the short term data (e.g. 7 days). These index will be converted into data cube by batch (e.g. every 7 day).
> 3. The data cube in hbase will keep the long term data.
> 4. Query engine will decide to use inverted index or data cube in hbase by time range. In future, the query engine can also use the in-memory inverted index in storm that can reduce the data latency from minutes to seconds.
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