Friday, September 21, 2012

NoClassDefFoundError: org/apache/lucene/util/Version






I make a project with blueprint-neo4j-graph and pellet , but pellet use lucene-core  2.3.1 and blueprint-neo4j-graph use lucene-core 3.5.0

I have a new error  in neo4j to load lucene version

Caused by: java.lang.NoClassDefFoundError: org/apache/lucene/util/Version
    at org.neo4j.index.impl.lucene.LuceneDataSource.<clinit>(LuceneDataSource.java:110)
    at org.neo4j.index.lucene.LuceneIndexProvider.load(LuceneIndexProvider.java:70)
    at org.neo4j.kernel.InternalAbstractGraphDatabase$DefaultKernelExtensionLoader.loadIndexImplementations(InternalAbstractGraphDatabase.java:1191)
    at org.neo4j.kernel.InternalAbstractGraphDatabase$DefaultKernelExtensionLoader.init(InternalAbstractGraphDatabase.java:1163)
    at org.neo4j.kernel.lifecycle.LifeSupport$LifecycleInstance.init(LifeSupport.java:382)
    ... 39 more
Caused by: java.lang.ClassNotFoundException: org.apache.lucene.util.Version
    at java.net.URLClassLoader$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
    at java.lang.ClassLoader.loadClass(Unknown Source)
    ... 44 more



I have pellet dependence
    <dependency>
            <groupId>com.owldl</groupId>
            <artifactId>pellet</artifactId>
            <version>2.3.0</version>
        </dependency>
         <dependency>
            <groupId>com.tinkerpop.blueprints</groupId>
            <artifactId>blueprints-neo4j-graph</artifactId>
            <version>2.1.0</version>
        </dependency>

With plugin m2e resolve depencence add this code in pom.xml project 


    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.apache.lucene</groupId>
                <artifactId>lucene-core</artifactId>
                <version>3.5.0</version>
            </dependency>
        </dependencies>
    </dependencyManagement>

Thursday, September 6, 2012

Install cassandra database

To install cassandra database distribution http://www.datastax.com/download/community

Dont work in 32 bit architecture. java Heap space  error
To see web service
http://<publicIP>:8888/opscenter/

Ubuntu 12, 64 bit

Before
**** remove version of java openjdk and install java oracle
sudo apt-ger purge openjdk*
java 7
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get install oracle-java7-installer

****openssl python
sudo apt-get install libssl0.9.8
sudo apt-get install sysstat
sudo apt-get install python-cql

****Install cassandra, DataStax Community distribution of Cassandra. Read more in http://www.datastax.com/docs/1.1/install/install_deb
sudo apt-get install dsc1.1

****install web service. Read more in http://www.datastax.com/docs/opscenter/install/install_deb
sudo apt-get install opscenter-free

***web service configure
sudo vi /etc/opscenter/opscenterd.conf
***add in file
[cassandra]
seed_hosts=publicIP
[logging]
level=INFO
[jmx]
port =7199


***configure cassadra
sudo vi /etc/cassandra/cassandra.yaml
***change IP and localhost for publiIP

***start cassandra
sudo service cassandra start

***node cassandra
nodetool ring -h publicIP

**start web
sudo service opscenterd start

*** check web service
wget http://publicIP:8888/

***to see log
/var/log/opscenter/opscenterd.log


*** to start client cassandra
cassandra-cli -h publicIP -p 9160

***to see  log of  cassandra
/var/log/cassandra/output.log
/var/log/cassandra/system.log


***  delete database cassandra if you want , stop service before
sudo bash -c '/var/lib/cassandra/data/system/*'