bugzilla at apache
Jun 10, 2009, 1:07 PM
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[Bug 46942] error log messages: apr_global_mutex_lock(rewrite_log_lock) failed
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https://issues.apache.org/bugzilla/show_bug.cgi?id=46942
Dan Poirier <poirier[at]pobox.com> changed:
What |Removed |Added
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Priority|P2 |P3
--- Comment #1 from Dan Poirier <poirier[at]pobox.com> 2009-06-10 13:07:17 PST ---
I think I've figured out what's going on (with some help from Greg Ames). Not
sure yet how to fix it.
The global mutex used by mod_rewrite to serialize writing to the rewrite log is
created in post_config(). So when the parent starts its graceful restart and
cleans up the old configuration, it's going to clean up - destroy - that global
mutex. Children still finishing up requests now have a reference to a mutex
that no longer exists, hence attempts to lock the mutex fail.
I think the worst effect of this is the possibility that a few rewritelog
messages get intermingled in the log, which isn't too important. Still, it
would be nice to figure out a way to make this work right. Maybe somebody who
knows how modules work better than I knows how to do this.
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[Bug 46942] error log messages: apr_global_mutex_lock(rewrite_log_lock) failed
