On 8/06/11 7:44 AM, Joe Kutner wrote:
Thanks Emmanuel. that gives me something to go on. I see what I can
find.
Here is the other error I occasionally run into:
yep, that's a result of require not being thread-safe. You need to make
sure everything is required/autoloaded in the main process before
spawing off any threads.
Xavier
ThreadError: Mutex is not locked
new at /opt/torquebox/vendor/jruby/1.8/gems/
data_objects-0.10.6/lib/data_objects/pooling.rb:172
new at /opt/torquebox/vendor/jruby/1.8/gems/
data_objects-0.10.6/lib/data_objects/pooling.rb:119
new at /opt/torquebox/vendor/jruby/1.8/gems/
data_objects-0.10.6/lib/data_objects/connection.rb:68
initialize at /opt/torquebox/vendor/jruby/1.8/gems/
data_objects-0.10.6/lib/data_objects/transaction.rb:28
create_for_uri at /opt/torquebox/vendor/jruby/1.8/gems/
data_objects-0.10.6/lib/data_objects/transaction.rb:21
transaction_primitive at /opt/torquebox/vendor/jruby/1.8/gems/dm-
transactions-1.1.0/lib/dm-transactions/adapters/dm-do-adapter.rb:20
connect_adapter at /opt/torquebox/vendor/jruby/1.8/gems/dm-
transactions-1.1.0/lib/dm-transactions.rb:303
send at org/jruby/RubyKernel.java:2063
each_adapter at /opt/torquebox/vendor/jruby/1.8/gems/dm-
transactions-1.1.0/lib/dm-transactions.rb:250
each_key at org/jruby/RubyHash.java:1235
each_adapter at /opt/torquebox/vendor/jruby/1.8/gems/dm-
transactions-1.1.0/lib/dm-transactions.rb:249
begin at /opt/torquebox/vendor/jruby/1.8/gems/dm-
transactions-1.1.0/lib/dm-transactions.rb:108
commit at /opt/torquebox/vendor/jruby/1.8/gems/dm-
transactions-1.1.0/lib/dm-transactions.rb:130
On Jun 7, 1:21 pm, Emmanuel Gomez<[email protected]> wrote:
Hi Joe,
I've had a similar-looking problem when trying to use a library that internally
lazy-loads (aka `autoload`) some of its files in a multi-threaded context. The
lazy-loading would be triggered by one thread, but the other threads would then
try to use the internal constant before it was fully loaded. In my case, I was
able to force loading of the internal constant before the threaded section of
my code.
I don't know if you're facing the same circumstance, but maybe this is of some
use.
-- Emmanuel
On Jun 7, 2011, at 11:14 AM, Joe Kutner wrote:
I get this error inconsistently when I have multiple threads entering
the same code that wraps a transaction around my services at about the
same time:
NameError: unitialized constant Digest::SHA256
const_missing at org/jruby/RubyDigest.java:140
initialize at /opt/torquebox/vendor/jruby/1.8/gems/
data_objects-0.10.6/lib/data_objects/transaction.rb:30
create_for_uri at /opt/torquebox/vendor/jruby/1.8/gems/
data_objects-0.10.6/lib/data_objects/transaction.rb:21
transaction_primitive at /opt/torquebox/vendor/jruby/1.8/gems/dm-
transactions-1.1.0/lib/dm-transactions/adapters/dm-do-adapter.rb:20
connect_adapter at /opt/torquebox/vendor/jruby/1.8/gems/dm-
transactions-1.1.0/lib/dm-transactions.rb:303
send at org/jruby/RubyKernel.java:2063
each_adapter at /opt/torquebox/vendor/jruby/1.8/gems/dm-
transactions-1.1.0/lib/dm-transactions.rb:250
each_key at org/jruby/RubyHash.java:1235
each_adapter at /opt/torquebox/jruby/1.8/gems/dm-
transactions-1.1.0/lib/dm-transactions.rb:249
begin at /opt/torquebox/jruby/1.8/gems/dm-
transactions-1.1.0/lib/dm-transactions.rb:108
commit at /opt/torquebox/jruby/1.8/gems/dm-
transactions-1.1.0/lib/dm-transactions.rb:130
When it happens, it only happens to one thread (out of 4 usually).
I've also seen an error "Mutex is locked" or something like that. But
again, I can't reproduce it consistently.
Any one have some ideas?
I know this may not be datamapper related - sorry if its not.
Thanks,
Joe
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