I didn't find that obvious.  Thanks Dario.  I agree that a 90 day data retention window would be long enough to deal with any corrupt/invalid data. 

On Tue, Nov 4, 2014 at 11:12 PM, Dario Taraborelli <dtaraborelli@wikimedia.org> wrote:

On Nov 4, 2014, at 2:08 PM, Nuria <nuria@wikimedia.org> wrote:

No, database records are not affected. It should not impact your work with EL in any way as your findings come from the records in the database.

The logs are used mainly for operational purposes by the dev team as maintainers of the system.

this obviously means that any missing, corrupted or invalid data from the log DB can only be recovered within the data retention window, which seems reasonable to me.

On Nov 4, 2014, at 11:55 AM, Aaron Halfaker <ahalfaker@wikimedia.org> wrote:

Hey guys,

Sorry for the late response, but I'm still not sure what lives in /a/eventlogging/archive/*

Will deleting from there affect what logs we have stored in the DB?  Is this an intermediate log storage place, a canonical one, etc.?

What will we no longer be able to do after it is pruned?

-Aaron

On Thu, Oct 30, 2014 at 2:35 PM, Nuria Ruiz <nuria@wikimedia.org> wrote:

>Also, I'm not clear on the significance of the EL archive directory.  Can you remind me/direct me to documentation?

Well, the logs just record the incoming pipeline of events, we have used them to troubleshoot operational issues in the past but the bulk of data analysis in EL happens from data stored on database.

Some info here: https://wikitech.wikimedia.org/wiki/EventLogging#Data_storage

 

On Thu, Oct 30, 2014 at 12:22 PM, Aaron Halfaker <ahalfaker@wikimedia.org> wrote:

Nuria, can you specify which logs will be trimmed. 

Also, I'm not clear on the significance of the EL archive directory.  Can you remind me/direct me to documentation?

On Thu, Oct 30, 2014 at 12:36 PM, Nuria Ruiz <nuria@wikimedia.org> wrote:

Hello, 

To comply with our privacy policy we are going to purge logs in 1002 that are older than 90 days. Please let us know whether this is an issue. We hope to have these changes done by the end of next week.

A concrete example: 

Logs in, for example, the eventlogging archiving directory:

@stat1002:/a/eventlogging/archive$ 

will be restricted to the last 90 days. 

Thanks, 

Nuria

_______________________________________________
Analytics mailing list
Analytics@lists.wikimedia.org
https://lists.wikimedia.org/mailman/listinfo/analytics

_______________________________________________
Analytics mailing list
Analytics@lists.wikimedia.org
https://lists.wikimedia.org/mailman/listinfo/analytics

_______________________________________________
Analytics mailing list
Analytics@lists.wikimedia.org
https://lists.wikimedia.org/mailman/listinfo/analytics

_______________________________________________
Analytics mailing list
Analytics@lists.wikimedia.org
https://lists.wikimedia.org/mailman/listinfo/analytics

_______________________________________________
Analytics mailing list
Analytics@lists.wikimedia.org
https://lists.wikimedia.org/mailman/listinfo/analytics

_______________________________________________
Analytics mailing list
Analytics@lists.wikimedia.org
https://lists.wikimedia.org/mailman/listinfo/analytics

_______________________________________________
Analytics mailing list
Analytics@lists.wikimedia.org
https://lists.wikimedia.org/mailman/listinfo/analytics