[jira] [Commented] (PHOENIX-2715) Query Log

["Lars Hofhansl (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PHOENIX-2715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16490153#comment-16490153 ] 

Lars Hofhansl commented on PHOENIX-2715:
----------------------------------------

The default is supposed to the OFF, right?

I just true with a vanilla build from Phoenix' master branch and I see SYSTEM.LOG is being written to.

Looking at the code I see the default *is* OFF, so something is not working right, unless I misunderstood something.

Everything but OFF is a bad default, IMHO.

[~ankit@apache.org]

> Query Log
> ---------
>
>                 Key: PHOENIX-2715
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-2715
>             Project: Phoenix
>          Issue Type: New Feature
>            Reporter: Nick Dimiduk
>            Assignee: Ankit Singhal
>            Priority: Major
>             Fix For: 4.14.0, 5.0.0
>
>         Attachments: PHOENIX-2715.patch, PHOENIX-2715_master.patch, PHOENIX-2715_master_V1.patch, PHOENIX-2715_master_V2.patch
>
>
> One useful feature of other database systems is the query log. It allows the DBA to review the queries run, who's run them, time taken, &c. This serves both as an audit and also as a source of "ground truth" for performance optimization. For instance, which columns should be indexed. It may also serve as the foundation for automated performance recommendations/actions.
> What queries are being run is the first piece. Have this data tied into tracing results and perhaps client-side metrics (PHOENIX-1819) becomes very useful.
> This might take the form of clients writing data to a new system table, but other implementation suggestions are welcome.



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