[ 
https://issues.apache.org/jira/browse/IMPALA-1798?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Tim Armstrong resolved IMPALA-1798.
-----------------------------------
    Resolution: Duplicate

Sounds like IMPALA-4242

> Very slow performance of Views on top of another Views
> ------------------------------------------------------
>
>                 Key: IMPALA-1798
>                 URL: https://issues.apache.org/jira/browse/IMPALA-1798
>             Project: IMPALA
>          Issue Type: Bug
>          Components: Perf Investigation
>    Affects Versions: Impala 2.1, Impala 2.1.1, Impala 2.3.0
>         Environment: Cluster 3 nodes Impala 2.1
>            Reporter: Alex Finch
>            Priority: Minor
>              Labels: performance, planner
>
> Query from a view has about the same performance as a query from the source 
> table. If we have a VIEW on top of another VIEW (even CREATE view_2 AS SELECT 
> * FROM view_1) the performance is much slower, for more complex queries on 
> top of view_2, the compilation of the query actually never finishes.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)

Reply via email to