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Posted to dev@lens.apache.org by "Sharad Agarwal (JIRA)" <ji...@apache.org> on 2015/07/22 09:54:04 UTC
[jira] [Assigned] (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 ]
Sharad Agarwal reassigned LENS-251:
-----------------------------------
Assignee: Sharad Agarwal
> 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
> Assignee: 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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