HI all,
I created a cluster with three nodes. In every server I gave my database
path as data/myGraph.db
For creating HIghlyAvailableGraphDatabase, I used the following code,
GraphDatabaseService graphDb =
databaseFactory.newHighlyAvailableDatabaseBuilder("<SERVER_PATH>/data/myGraph.db")
.loadPropertiesFromFile("neo4jProperties.properties")
.newGraphDatabase();
where my properties file had the configurations as follows,
ha.server_id=1
ha.initial_hosts=192.168.9.1:5001,192.168.9.2:5002,192.168.9.3:5003
I tried creating a node as follows,
Transaction tx = graphDb.beginTx();
Node node1 =graphDb.createNode();
node1.setProperty("name", "kk");
node1.setProperty("college", "ceg");
graphDb.index().forNodes( "nodes" ).add( node1, "name", "kk" );
System.out.println("Node1 name :"+node1.getProperty("name"));
tx.success();
tx.close();
But when i run the code I get the following exception,
Exception in thread "main" java.lang.RuntimeException: Error starting
org.neo4j.kernel.ha.HighlyAvailableGraphDatabase,
/home/admin/neo4j-enterprise-2.0.0/data/kkGraph.db
at
org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:333)
at
org.neo4j.kernel.ha.HighlyAvailableGraphDatabase.<init>(HighlyAvailableGraphDatabase.java:139)
at
org.neo4j.graphdb.factory.HighlyAvailableGraphDatabaseFactory$1.newDatabase(HighlyAvailableGraphDatabaseFactory.java:47)
at
org.neo4j.graphdb.factory.GraphDatabaseBuilder.newGraphDatabase(GraphDatabaseBuilder.java:198)
at
in.co.nmsworks.neo4j.examples.HighlyAvailableDbTest.main(HighlyAvailableDbTest.java:30)
Caused by: org.neo4j.kernel.lifecycle.LifecycleException: Component
'org.neo4j.kernel.StoreLockerLifecycleAdapter@7fa9629b' was successfully
initialized, but failed to start. Please see attached cause exception.
at
org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.start(LifeSupport.java:504)
at org.neo4j.kernel.lifecycle.LifeSupport.start(LifeSupport.java:115)
at
org.neo4j.kernel.InternalAbstractGraphDatabase.run(InternalAbstractGraphDatabase.java:310)
... 4 more
Caused by: org.neo4j.kernel.StoreLockException: Unable to obtain lock on
store lock file:
/home/admin/neo4j-enterprise-2.0.0/data/kkGraph.db/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)
... 6 more
Caused by: java.io.IOException: Unable to lock
sun.nio.ch.FileChannelImpl@64d11693 because another process already holds
the lock.
at
org.neo4j.kernel.impl.nioneo.store.FileLock.getOsSpecificFileLock(FileLock.java:87)
at
org.neo4j.kernel.DefaultFileSystemAbstraction.tryLock(DefaultFileSystemAbstraction.java:89)
at org.neo4j.kernel.StoreLocker.checkLock(StoreLocker.java:74)
... 8 more
Help me.
Thanks in advance.
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