I switched our memcached server to another server and now I'm seeing alot of "Error parsing memcached response" errors, probably because the new cache doesn't have the items the old cache had, for both images and message cache.
How can I reset the status in Mediawiki of the memcached server?
Thanks, Travis
On 05/01/07, Travis Derouin travis@wikihow.com wrote:
I switched our memcached server to another server and now I'm seeing alot of "Error parsing memcached response" errors, probably because the new cache doesn't have the items the old cache had, for both images and message cache.
If the cache doesn't contain the items, then it'll fail without errors and be re-cached; cache misses aren't an error condition in cases like this. I'm no expert, but I'd be inclined to suspect something else was wrong.
I recall reading somewhere that this error starting turning up with a newer version of MediaWiki and an older version of memcached. Is it possible that the "other server" is running an older version?
How can I reset the status in Mediawiki of the memcached server?
You shouldn't need to, see above.
Rob Church
Great, thanks for the tip. I initially installed memcached-1.2.1 on the new server and that apparently doesn't work too well with MW 1.6.7. Switching back to 1.1.3 seems to have fixed the problem.
Thanks, Travis
On 1/5/07, Rob Church robchur@gmail.com wrote:
On 05/01/07, Travis Derouin travis@wikihow.com wrote:
I switched our memcached server to another server and now I'm seeing
alot of
"Error parsing memcached response" errors, probably because the new
cache
doesn't have the items the old cache had, for both images and message
cache.
If the cache doesn't contain the items, then it'll fail without errors and be re-cached; cache misses aren't an error condition in cases like this. I'm no expert, but I'd be inclined to suspect something else was wrong.
I recall reading somewhere that this error starting turning up with a newer version of MediaWiki and an older version of memcached. Is it possible that the "other server" is running an older version?
How can I reset the status in Mediawiki of the memcached server?
You shouldn't need to, see above.
Rob Church _______________________________________________ Wikitech-l mailing list Wikitech-l@wikimedia.org http://mail.wikipedia.org/mailman/listinfo/wikitech-l
Travis,
On 1/5/07, Travis Derouin travis@wikihow.com wrote:
Great, thanks for the tip. I initially installed memcached-1.2.1 on the new server and that apparently doesn't work too well with MW 1.6.7. Switching back to 1.1.3 seems to have fixed the problem.
Memcached 1.2 seems to have lots of changes. As we use php-client, probably some of communication/compression/etc methods have changed there, but not in our codebase.
I had a plan of rolling out 1.2 some day (and add UDP support at mediawiki for many types of memcached updates), so probably we'll be compatible soon.
BR, Domas
Sounds great. Thanks.
On 1/13/07, Domas Mituzas midom.lists@gmail.com wrote:
Travis,
On 1/5/07, Travis Derouin travis@wikihow.com wrote:
Great, thanks for the tip. I initially installed memcached-1.2.1 on the new server and that apparently doesn't work too well with MW 1.6.7.
Switching
back to 1.1.3 seems to have fixed the problem.
Memcached 1.2 seems to have lots of changes. As we use php-client, probably some of communication/compression/etc methods have changed there, but not in our codebase.
I had a plan of rolling out 1.2 some day (and add UDP support at mediawiki for many types of memcached updates), so probably we'll be compatible soon.
BR, Domas _______________________________________________ Wikitech-l mailing list Wikitech-l@lists.wikimedia.org http://lists.wikimedia.org/mailman/listinfo/wikitech-l
wikitech-l@lists.wikimedia.org