In my servers I have given the path as data/graph.db
my properties file(neo4jServer.properties) has the following values,
ha.server_id=1
ha.initial_hosts=192.168.9.1:5001,192.168.9.2:5002,192.168.9.3:5003
I started my servers. Then for creating HIghlyAvailableGraphDatabase, I
used the following code,
GraphDatabaseService graphDb = new
HighlyAvailableGraphDatabaseFactory().newHighlyAvailableDatabaseBuilder("<SERVER_PATH>/data/graph.db").loadPropertiesFromFile("
neo4jServer.properties").newGraphDatabase();
When i try to run the code it is showing me the above exception I mentioned.
My requirement is I have to modify the DB that is running in the server
through embedded highly available graph database.
Help me.
On Thu, Jan 23, 2014 at 1:14 PM, Michael Hunger <
[email protected]> wrote:
> You have to provide the same ha config
> as in server as map to the HA-DB
>
> Sent from mobile device
>
> Am 23.01.2014 um 05:36 schrieb Kalidhakani J <[email protected]>:
>
> Actually my servers are running. I am trying to use the server's db. How
> can I do that in embedded highly available graph database ?? When i try to
> create a embedded highly available graph database giving the path name as
> server's db path, it is showing me this exception. How can i implement it
> ??? Wat am i missing here? Help me.
>
>
> On Mon, Jan 20, 2014 at 7:00 PM, Peter Neubauer <
> [email protected]> wrote:
>
>> Can you please check that no other neo4j java process is currently
>> running on that machine, as it seems two database instances are trying to
>> access the files?
>>
>> /peter
>>
>>
>> G: neubauer.peter
>> S: peter.neubauer
>> P: +46 704 106975
>> L: http://www.linkedin.com/in/neubauer
>> T: @peterneubauer
>>
>> Neo4j 2.0.0 -
>> (graphs)-[:FOR]->(everyone)<http://blog.neo4j.org/2013/12/neo4j-20-ga-graphs-for-everyone.html>
>> Do something useful - Teach your kids 1 hour code!<http://code.org/learn>
>>
>>
>> On Fri, Jan 17, 2014 at 1:14 PM, Kalidhakani J <[email protected]>wrote:
>>
>>> 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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