We have a distributed environment with 1 admin server, 1 engage server,
and 2 workers. They all use shared storage mounted via nfs off of the
admin server.
We noticed that engage was having trouble playing videos. With further
investigation, we found out that worker2 had hung for some reason.
As it turns out, it appears that the worker machines are serving files
for engage.
For example, worker2's logs have this in them:
2013-01-25 11:44:44 DEBUG (StaticResourceServlet:381) - Serving
bytes:0-31870
2013-01-25 11:44:44 DEBUG
(ServiceRegistryJpaImpl$JobProducerHearbeat:2272) - Finished checking
for unresponsive services
2013-01-25 11:44:48 DEBUG (StaticResourceServlet:116) - Looking for
static resource
'/static/c4cc3509-6882-4173-a9be-e6a7f3567154/6a1ebb97-bea6-49ee-8160-77f99ecc8659/PRESENTER_BLACKMAGIC1.flv'
2013-01-25 11:44:48 DEBUG (StaticResourceServlet:131) - Serving static
resource
'/export/mh_data/opencast/shared/downloads/c4cc3509-6882-4173-a9be-e6a7f3567154/6a1ebb97-bea6-49ee-8160-77f99ecc8659/PRESENTER_BLACKMAGIC1.flv'
2013-01-25 11:44:48 DEBUG (StaticResourceServlet:381) - Serving
bytes:0-224744377
2013-01-25 11:45:04 DEBUG (StaticResourceServlet:116) - Looking for
static resource
'/static/c4cc3509-6882-4173-a9be-e6a7f3567154/attachment-3/SCREEN_BLACKMAGIC0.jpg'
2013-01-25 11:45:04 DEBUG (StaticResourceServlet:131) - Serving static
resource
'/export/mh_data/opencast/shared/downloads/c4cc3509-6882-4173-a9be-e6a7f3567154/attachment-3/SCREEN_BLACKMAGIC0.jpg'
2013-01-25 11:45:04 DEBUG (StaticResourceServlet:381) - Serving
bytes:0-31870
2013-01-25 11:45:05 DEBUG (StaticResourceServlet:116) - Looking for
static resource
'/static/c4cc3509-6882-4173-a9be-e6a7f3567154/6a1ebb97-bea6-49ee-8160-77f99ecc8659/PRESENTER_BLACKMAGIC1.flv'
2013-01-25 11:45:05 DEBUG (StaticResourceServlet:131) - Serving static
resource
'/export/mh_data/opencast/shared/downloads/c4cc3509-6882-4173-a9be-e6a7f3567154/6a1ebb97-bea6-49ee-8160-77f99ecc8659/PRESENTER_BLACKMAGIC1.flv'
2013-01-25 11:45:05 DEBUG (StaticResourceServlet:381) - Serving
bytes:0-224744377
2013-01-25 11:45:33 DEBUG (StaticResourceServlet:116) - Looking for
static resource
'/static/c4cc3509-6882-4173-a9be-e6a7f3567154/attachment-11/SCREEN_BLACKMAGIC0.jpg'
2013-01-25 11:45:33 DEBUG (StaticResourceServlet:131) - Serving static
resource
'/export/mh_data/opencast/shared/downloads/c4cc3509-6882-4173-a9be-e6a7f3567154/attachment-11/SCREEN_BLACKMAGIC0.jpg'
2013-01-25 11:45:33 DEBUG (StaticResourceServlet:381) - Serving bytes:0-4441
2013-01-25 11:45:33 DEBUG (StaticResourceServlet:116) - Looking for
static resource
'/static/c4cc3509-6882-4173-a9be-e6a7f3567154/attachment-8/SCREEN_BLACKMAGIC0.jpg'
2013-01-25 11:45:33 DEBUG (StaticResourceServlet:131) - Serving static
resource
'/export/mh_data/opencast/shared/downloads/c4cc3509-6882-4173-a9be-e6a7f3567154/attachment-8/SCREEN_BLACKMAGIC0.jpg'
2013-01-25 11:45:33 DEBUG (StaticResourceServlet:381) - Serving bytes:0-3778
This seems rather odd to me as I'd expect engage, which also has access
to those files, to serve them. Is this normal behavior> If not, why
would this be happening? If so, can this behavior be modified?
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