I am attempting to write to a Blazegraph database file multiple times using the OpenRDF Java API. Here is some pseudocode that mimics what I'm trying to do:
//create Connection to the database
Repository repo = new Repository("database.jnl")
RepositoryConnection cxn = newConnection(repo)
cxn.add(someData)
cxn.close()
repo.shutDown()
Now file database.jnl is still there, and I want to repeat the process above, using a new RepositoryConnection object on the same file. This works about 50-55% of the time, but often I receive an error:
java.io.IOException: Stream Closed
I'm wondering what could be the possible cause of an intermittent IOException? It is strange to me that it does not occur either all or none of the time.