I want to load my database with 10,000 users nodes with 4 process. Is there
any possibility to do that?
For example can I specify a different db_path for each process and run them?
On Wednesday, March 5, 2014 8:14:14 PM UTC-8, Michael Hunger wrote:
>
> Only one active process at a time can access the storage files.
>
> What do you want to do?
>
> Michael
>
> Am 06.03.2014 um 01:03 schrieb Reihane Boghrati
> <r.bog...@gmail.com<javascript:>
> >:
>
> Hi,
>
> How can I load my database with multiple processes?
>
> This is my init function:
>
> static GraphDatabaseService graphDb;
> private static final String DB_PATH =
> "C:/Users/Reihane/Documents/Neo4j/default.graphdb";
> public boolean init() throws DBException {
> if (graphDb == null)
> graphDb = new GraphDatabaseFactory().newEmbeddedDatabase(DB_PATH);
> engine = new ExecutionEngine(graphDb);
> return true;
> }
>
> and this is the exception my code throws:
>
> java.lang.RuntimeException: Error starting
> org.neo4j.kernel.EmbeddedGraphDatabase,
> C:\Users\Reihane\Documents\Neo4j\default.graphdb
> at
> org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:333)
> at
> org.neo4j.kernel.EmbeddedGraphDatabase.<init>(EmbeddedGraphDatabase.java:63)
> at
> org.neo4j.graphdb.factory.GraphDatabaseFactory$1.newDatabase(GraphDatabaseFactory.java:92)
> at
> org.neo4j.graphdb.factory.GraphDatabaseBuilder.newGraphDatabase(GraphDatabaseBuilder.java:198)
> at
> org.neo4j.graphdb.factory.GraphDatabaseFactory.newEmbeddedDatabase(GraphDatabaseFactory.java:69)
> at Neo4j.Neo4jClient.init(Neo4jClient.java:168)
> at edu.usc.bg.base.DBWrapper.init(DBWrapper.java:62)
> at edu.usc.bg.base.Client.executeDoLoad(Client.java:1013)
> at edu.usc.bg.base.Client.runBG(Client.java:892)
> at edu.usc.bg.BGMainClass.main(BGMainClass.java:41)
> Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component
> 'org.neo4j.kernel.StoreLockerLifecycleAdapter@7a536ac6' was successfully
> initialized, but failed to start. Please see attached cause exception.
> at
> org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:504)
> at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:115)
> at
> org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:310)
> ... 9 more
> Caused by: org.neo4j.kernel.StoreLockException: Unable to obtain lock on
> store lock file:
> C:\Users\Reihane\Documents\Neo4j\default.graphdb\store_lock. Please ensure
> no other process is using this database, and that the directory is writable
> (required even for read-only access)
> at org.neo4j.kernel.StoreLocker.checkLock(StoreLocker.java:87)
> at
> org.neo4j.kernel.StoreLockerLifecycleAdapter.start(StoreLockerLifecycleAdapter.java:44)
> at
> org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:498)
> ... 11 more
> Caused by: java.io.IOException: Couldn't lock lock file
> C:\Users\Reihane\Documents\Neo4j\default.graphdb\lock because another
> process already holds the lock.
> at
> org.neo4j.kernel.impl.nioneo.store.FileLock.getLockFileBasedFileLock(FileLock.java:115)
> at
> org.neo4j.kernel.impl.nioneo.store.FileLock.getOsSpecificFileLock(FileLock.java:63)
> at
> org.neo4j.kernel.DefaultFileSystemAbstraction.tryLock(DefaultFileSystemAbstraction.java:89)
> at org.neo4j.kernel.StoreLocker.checkLock(StoreLocker.java:74)
> ... 13 more
>
> --
> You received this message because you are subscribed to the Google Groups
> "Neo4j" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to neo4j+un...@googlegroups.com <javascript:>.
> For more options, visit https://groups.google.com/groups/opt_out.
>
>
>
--
You received this message because you are subscribed to the Google Groups
"Neo4j" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to neo4j+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
