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Caused by: java.lang.ClassNotFoundException: org.apache.zookeeper.KeeperException

When I run a JAVA program (can't get a new HTable) in the Eclipse environment, I got the following errors:

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/zookeeperKeeperException
at org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManager.java:185)
at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:154)
at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:132)
at HBaseConnector.main(HBaseConnector.java:27)
Caused by: java.lang.ClassNotFoundException: org.apache.zookeeper.KeeperException
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 4 more

      

        
        
        
      

    
import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.util.Bytes;

public class HBaseConnector {
    public static void main(String[] args) throws IOException {
    Configuration config = HBaseConfiguration.create();
    HTable table = new HTable(config, "myLittleHBaseTable");
    ...
}

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used jar files:
hbase-0.94.6-cdh4.3.0.jar
zookeeper-3.4.5-cdh4.3.0-tests.jar
lf4j-log4j12-1.7.5.jar
commons-configuration-1.9.jar
com.springsource.org.apache.commons.logging-1.1.1.jar
commons-lang-2.6.jar
hadoop-core-0.20.0.jar

Where is it wrong?

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3 answers


try it

I fixed this by editing the file "/usr/local/hbase-0.94.1/conf/hbase-env.sh" and adding the item "export HBASE_CLASSPATH = / usr / local / hbase-0.94.1 / lib".



The Zookeeper JAR is located in the HBase installation at "/usr/local/hbase-0.94.1/lib".

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Just include the zookeeper jar file in the build path located in HBASE. He should solve your problem.



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Your class may not be accessible through your code. Try to use distributed cache and download the jar files, use the link to set up the config: https://hadoop.apache.org/docs/r2.4.1/api/org/apache/hadoop/filecache/DistributedCache.html

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