Last modified: 2011-11-25 07:23:33 UTC

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Bug 17896 - Failover/fallback to internal storage when $wgDefaultExternalStore external storage clusters are all broken
Failover/fallback to internal storage when $wgDefaultExternalStore external s...
Status: NEW
Product: MediaWiki
Classification: Unclassified
Database (Other open bugs)
All All
: Low normal (vote)
: ---
Assigned To: Nobody - You can work on this!
Depends on:
  Show dependency treegraph
Reported: 2009-03-09 21:32 UTC by Brion Vibber
Modified: 2011-11-25 07:23 UTC (History)
0 users

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


Description Brion Vibber 2009-03-09 21:32:04 UTC
We had a ~30 minute outage where pages couldn't be saved on today, because the blob tables on cluster20/cluster21 had reached the default MyISAM 1-million row limit.

While the databases are being rebuilt with a raised limit, we restored write capability by switching off $wgDefaultExternalStore for enwiki, so text entries are temporarily being saved straight into the 'text' table.

It would probably make a lot of sense if we could do this automatically -- instead of breaking the site, fall back to an acceptable short-term alternative and throw big fat alerts for us to go fix the ES parts.

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