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Posted to dev@lens.apache.org by "Amareshwari Sriramadasu (JIRA)" <ji...@apache.org> on 2015/07/10 06:56:05 UTC

[jira] [Updated] (LENS-251) Support to query streaming data sources

     [ https://issues.apache.org/jira/browse/LENS-251?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Amareshwari Sriramadasu updated LENS-251:
-----------------------------------------
    Labels: Hackathon-July  (was: )

> Support to query streaming data sources
> ---------------------------------------
>
>                 Key: LENS-251
>                 URL: https://issues.apache.org/jira/browse/LENS-251
>             Project: Apache Lens
>          Issue Type: New Feature
>          Components: cube
>            Reporter: Sharad Agarwal
>              Labels: Hackathon-July
>
> For certain stores that allows streaming ingestion, to make the data available immediately for querying, we need the notion of streaming update period or some such.
> Describing by example:
> - lets say there are two drivers - D1 and D2.
> - D1 queries storage S1
> - D2 queries storage S2
> S1 and S2 are part of the same Cube.
> In S1 data is in hourly granularity loaded every hour, while S2 has data being ingested continuously in streaming fashion and maintains last 5 hours window of data.
> Now based on the query time range we want to select the right driver.



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