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Posted to dev@lens.apache.org by "Amareshwari Sriramadasu (JIRA)" <ji...@apache.org> on 2015/02/26 10:38:04 UTC

[jira] [Work started] (LENS-356) Run estimate for each driver in parallel

     [ https://issues.apache.org/jira/browse/LENS-356?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Work on LENS-356 started by Amareshwari Sriramadasu.
----------------------------------------------------
> Run estimate for each driver in parallel 
> -----------------------------------------
>
>                 Key: LENS-356
>                 URL: https://issues.apache.org/jira/browse/LENS-356
>             Project: Apache Lens
>          Issue Type: Sub-task
>          Components: server
>            Reporter: Amareshwari Sriramadasu
>            Assignee: Amareshwari Sriramadasu
>             Fix For: 2.1
>
>
> We are estimating the cost of query on each driver sequentially. Since each estimate is independent those can be parallelized.
> For each driver rewrite the query, call driver.estimate - need to parallelize this for all drivers. 



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