Last modified: 2014-11-15 12:08:11 UTC

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Bug 16993 - Scripts that wait for lagged database servers should ignore those out of rotation
Scripts that wait for lagged database servers should ignore those out of rota...
Status: NEW
Product: MediaWiki
Classification: Unclassified
Database (Other open bugs)
unspecified
All All
: Low enhancement (vote)
: ---
Assigned To: Nobody - You can work on this!
aklapper-moreinfo
:
Depends on:
Blocks:
  Show dependency treegraph
 
Reported: 2009-01-12 17:33 UTC by Brion Vibber
Modified: 2014-11-15 12:08 UTC (History)
2 users (show)

See Also:
Web browser: ---
Mobile Platform: ---
Assignee Huggle Beta Tester: ---


Attachments

Description Brion Vibber 2009-01-12 17:33:44 UTC
** s3 cluster **
10.0.0.234                  db1   0 
10.0.0.101                adler   0 
10.0.0.238                  db5   0 
 10.0.6.21                 db11   0 
 10.0.6.28                 db18 174366 ****************************************
 10.0.6.29                 db19   0 
 10.0.6.31                 db21   0 
 10.0.6.39                 db29   1 *

Currently, scripts that wait for lagged servers to catch up before continuing operations don't distinguish between those in the system that will actually be used, and those which have been taken out of rotation (0 load placed on them).

To avoid disrupting activity when something needs a long catch-up, we currently have to remove it entirely from db.php -- this is pretty crappy because it then stops showing up in our regular lag tracking, so it's harder to see it when it catches up.

It would be nice to be able to have it in the system so it can be tracked, but still not actively used.
Comment 1 Andre Klapper 2014-08-23 15:44:42 UTC
Five years later: Is this still relevant?

Which file is that about (if still in MediaWiki code base at all)? 
core/includes/specials/SpecialLockdb.php and SpecialUnlockdb.php?
Or operations/mediawiki-config/docroot/noc/db.php ?
Comment 2 Andre Klapper 2014-11-15 12:08:11 UTC
Five years later: Is this still relevant?

Which file is that about (if still in MediaWiki code base at all)? 
core/includes/specials/SpecialLockdb.php and SpecialUnlockdb.php?
Or operations/mediawiki-config/docroot/noc/db.php ?

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