Hi Everyone,
I am running into a weird issue. We started restarting felix at 7am every
morning before our classes start at 8:30 am to overcome MH-8205. This seems to
solve this issue but we are running into a different problem than high load /
garbage collecting errors. Every now and again we have a capture fail with:
2011-10-16 17:44:50 WARN (RemoteBase:155) - {POST
http://mhengage.usask.ca:8080/distribution/download=HTTP/1.1 401 Nonce has
expired/timed out}
2011-10-16 17:44:50 ERROR (WorkflowOperationWorker:156) - Workflow operation
'distribute-download' failed
org.opencastproject.distribution.api.DistributionException: Unable to
distribute mediapackage 17408d60-2b0c-46d0-9276-91731acd4221A using a remote
distribution service proxy.
From our admin server trying to distribute to our engage server. It was only
happening for 1 capture out of every 8 or 9 at most per day but on Friday we
had it happen to 4 of our 8 captures. Then 1 out of the 4 failed captures
failed again as we reprocessed by putting them into the inbox and then the
final one went through on a third attempt.
I have filed this ticket to keep track of it:
http://opencast.jira.com/browse/MH-8273
The description for DigestAuthenticationFilter on their website[1] states:
"The DigestAuthenticatonEntryPoint has a property specifying the key used for
generating the nonce tokens, along with a nonceValiditySeconds property for
determining the expiration time (default 300, which equals five minutes)."
Has anyone else encountered this? Josh or Tobias do you have any intuitions
about what might be an underlying issue? Could it be a matter or load on the
server causing the copy to take too long? Is a single nonce being used for an
entire media package transfer or is each part of the transfer under a different
authentication? 5 minutes seems like plenty of time if it is inactive time but
not quite enough if it is the full transfer. It looks like we could also check
the header for a "stale=true" and get a new nonce in this case.
Thanks,
Adam
[1]http://static.springsource.org/spring-security/site/docs/3.0.x/reference/basic.html
Adam McKenzie
ITS, University of Saskatchewan
Rm 61 Physics, 116 Science Place
Saskatoon SK S7N 5E2 Canada
(306) 966-2453
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