[jira] [Commented] (IMPALA-8771) Missing stats warning for complex type columns

["ASF subversion and git services (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IMPALA-8771?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16901252#comment-16901252 ] 

ASF subversion and git services commented on IMPALA-8771:
---------------------------------------------------------

Commit 227b839e4e71778b74b045331682317e29014c7c in impala's branch refs/heads/master from Tamas Mate
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=227b839 ]

IMPALA-8771: Missing stats warning for complex type columns

An extra condition is added to the table stats checking, so that the
complex type columns are skipped and can not trigger missing stats
warning.

Change-Id: Ia1b5c14da0c7f6eab373d80b2dbf7c974b2eb567
Reviewed-on: http://gerrit.cloudera.org:8080/13965
Reviewed-by: Tim Armstrong <ta...@cloudera.com>
Tested-by: Tim Armstrong <ta...@cloudera.com>


> Missing stats warning for complex type columns
> ----------------------------------------------
>
>                 Key: IMPALA-8771
>                 URL: https://issues.apache.org/jira/browse/IMPALA-8771
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Frontend
>    Affects Versions: Impala 2.13.0, Impala 3.3.0
>            Reporter: bharath v
>            Assignee: Tamas Mate
>            Priority: Minor
>              Labels: observability
>
> We currently don't support column stats for complex typed columns (ingored in `compute stats` statements). However running queries against those columns throws the missing col stats warning which is confusing. 
>  
> {noformat}
> select count(*) from
> customers c,
> c.orders o;{noformat}
> {noformat}
> Max Per-Host Resource Reservation: Memory=16.00KB Threads=3
> Per-Host Resource Estimates: Memory=36MB
> WARNING: The following tables are missing relevant table and/or column statistics.
> default.customers
> Analyzed query: SELECT count(*) FROM `default`.customers c, c.orders o{noformat}
>  
> We could probably skip the warnings if we detect the missing stats are for complex typed columns, until we support them. 



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