Hi,
There is a query cache related failure seen in Buildbot:
https://askmonty.org/buildbot/builders/hardy-amd64-dbg/builds/35/steps/test/logs/stdio
main.query_cache_28249 [ fail ]
Test ended at 2009-05-21 09:13:10
CURRENT_TEST: main.query_cache_28249
---
/home/archivist/archivist-amd64/archivist-amd64/build/mysql-test/r/query_cache_28249.result
2009-05-21 09:30:15.000000000 +0300
+++
/home/archivist/archivist-amd64/archivist-amd64/build/mysql-test/r/query_cache_28249.reject
2009-05-21 11:13:10.000000000 +0300
@@ -46,7 +46,6 @@
1 0
2 0
3 0
-4 0
RESET QUERY CACHE;
SELECT *, (SELECT COUNT(*) FROM t2) FROM t1;
a (SELECT COUNT(*) FROM t2)
mysqltest: Result length mismatch
- saving
'/home/archivist/archivist-amd64/archivist-amd64/build/mysql-test/var/1/log/main.query_cache_28249/'
to
'/home/archivist/archivist-amd64/archivist-amd64/build/mysql-test/var/log/main.query_cache_28249/'
Retrying test, attempt(2/3)...
main.query_cache_28249 [ retry-pass ] 509
Retrying test, attempt(3/3)...
main.query_cache_28249 [ retry-pass ] 404
I checked the bug:
http://bugs.mysql.com/bug.php?id=28249
It is about a race condition in query cache and MyISAM (and re-test in
Buildbot shows that it is not 100% reproducible).
I am thinking that perhaps the bug was re-introduced with Maria, or in any
case that someone more familiar with the MyISAM or Maria code would be better
at looking into it.
Any takers?
- Kristian.
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