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From Naresh Rapolu <nrap...@purdue.edu>
Subject problem with transactional client
Date Sat, 02 Jan 2010 17:56:09 GMT
Hello,

I get the following exception originating at line no 6  of the code snippet 
below.
---------------------------------------------------------
Exception in thread "main" java.lang.UnsupportedOperationException: Unable to 
find region server interface 
org.apache.hadoop.hbase.ipc.TransactionalRegionInterface
        at 
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.<init>(HConnectio
nManager.java:267)
        at 
org.apache.hadoop.hbase.client.HConnectionManager.getConnection(HConnectionManag
er.java:99)
        at org.apache.hadoop.hbase.client.HBaseAdmin.<init>(HBaseAdmin.java:68)
        at hbase.TransTableTest.main(TransTableTest.java:50)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.jav
a:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:156)
Caused by: java.lang.ClassNotFoundException: 
org.apache.hadoop.hbase.ipc.TransactionalRegionInterface
        at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
        at java.security.AccessController.doPrivileged(Native Method)
        at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
        at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
        at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
        at java.lang.Class.forName0(Native Method)
        at java.lang.Class.forName(Class.java:169)
        at 
org.apache.hadoop.hbase.client.HConnectionManager$TableServers.<init>(HConnectio
nManager.java:263)

------------------------------------------------------
Error occurs at line 6. of the code below.


1. HBaseConfiguration conf = new HBaseConfiguration();
2. conf.set(HConstants.REGION_SERVER_CLASS, TransactionalRegionInterface.class
                         .getName());
3. conf.set(HConstants.REGION_SERVER_IMPL, TransactionalRegionServer.class
                         .getName());


4. HTableDescriptor desc = new HTableDescriptor("testTable");
5. desc.addFamily(new HColumnDescriptor("testFamily"));
6. HBaseAdmin admin = new HBaseAdmin(conf);
7. admin.createTable(desc);

--------------------------------------------------------

Can I simply use src/contrib/transactional packages during compilation of my 
application code ? 
What other steps are required to use the transactional package ? 

Iam using HBase-0.20.1 over hadoop-0.20.1

Thanks,
Naresh.

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