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Posted to dev@lens.apache.org by "Amareshwari Sriramadasu (JIRA)" <ji...@apache.org> on 2015/02/13 06:13:11 UTC

[jira] [Created] (LENS-310) Investigate latency of select roughly in columnar warehouse

Amareshwari Sriramadasu created LENS-310:
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             Summary: Investigate latency of select roughly in columnar warehouse
                 Key: LENS-310
                 URL: https://issues.apache.org/jira/browse/LENS-310
             Project: Apache Lens
          Issue Type: Sub-task
          Components: driver-jdbc
            Reporter: Amareshwari Sriramadasu
            Assignee: Sushil Mohanty
             Fix For: 2.1


We are using select roughly for doing explain on columnar warehouse.

This task is to investigate if select roughly can return in few milli seconds latency.

Can the warehouse respond faster for select roughly even if it is running other heavy queries?

If estimate is being called aggressively, do we want use same pool across both execute and estimate in Lens? Shall we separate them for isolation? 



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