Shengsheng Huang created HBASE-6456: ---------------------------------------
Summary: Export Utility throws ClassNotFoundException Key: HBASE-6456 URL: https://issues.apache.org/jira/browse/HBASE-6456 Project: HBase Issue Type: Bug Reporter: Shengsheng Huang Priority: Minor The command I ran is as below: "bin/hbase org.apache.hadoop.hbase.mapreduce.Driver export t1 ./t1" And I got the following exceptions: attempt_201207261322_0002_m_000000_0, Status : FAILED Error: java.lang.ClassNotFoundException: org.apache.hadoop.hbase.util.Bytes at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at org.apache.hadoop.hbase.client.HTable.<init>(HTable.java:150) at org.apache.hadoop.hbase.mapreduce.TableInputFormat.setConf(TableInputFormat.java:100) at org.apache.hadoop.util.ReflectionUtils.setConf(ReflectionUtils.java:62) at org.apache.hadoop.util.ReflectionUtils.newInstance(ReflectionUtils.java:117) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:767) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:371) at org.apache.hadoop.mapred.Child$4.run(Child.java:266) at java.security.AccessController.doPrivileged(Native Method) at javax.security.au ... This exception can be resolved by adding hbase common jar into HADOOP_CLASSPATH. But this is an extra step for users and not so convenient. We could add Bytes.class into dependency Jars of the MapReduce job. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa For more information on JIRA, see: http://www.atlassian.com/software/jira