Hi,
We are running a forked (aimsdc) version of DSPACE 6.1, it's about 12 - 18
months old or so, haven't updated our fork as for now it's doing what we
need it to do.
However, the scheduled harvest has never worked, it runs once, and then
gets caught with a status of QUEUED even though the harvest thread has
completed.
Specific classes involved here are in dspace-api are HarvestScheduler,
OAIHarvester, HarvestedCollectionServiceImpl and HarvestedCollectionDAOImpl
At the end of the method OAIHarvester.runHarvest() an attempt is made to
update the Harvested_collection DB entry, however the save method is not
implemented and there is this comment in AbstractHibernateDAO.save()
public void save(Context context, T t) throws SQLException {
//Isn't required, is just here for other DB implementation. Hibernate auto
keeps track of changes.
}
For us, even though save has been called, the thread winds up without
error, but these changes are never persisted, and the harvest_status
remains QUEUED, and hence never runs again.
There is an attempt to commit changes in the thread managing class which is
a thread itself - HarvestScheduler.scheduleLoop()
// Commit everything
try {
mainContext.complete();
log.info("Done with iteration " + i);
} catch (SQLException e) {
log.error("Exception completing iteration " + i + " - " + e.getMessage(),
e);
mainContext.abort();
}
Is anyone experiencing this same issue? Should the save actually be
implementing a persist as things are happening in different threads?
Log snapshot
...
2018-11-01 13:57:33,659 INFO org.dspace.harvest.OAIHarvester @ Harvest
from https://ipubs.aims.gov.au:8543/oai/request successful. The process
took 37219 milliseconds. Harvested 4819 items.
2018-11-01 13:57:33,659 INFO org.dspace.harvest.HarvestThread @ Thread for
collection 45c9e139-62b0-46da-9cc7-ae93787265c8 completes.
2018-11-01 13:57:33,784 INFO org.dspace.harvest.HarvestScheduler @ Done
with iteration 10
...
Cheers
Kevin
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