I know that this is one of the topic that's asked much. Still after I digged into all of the topics I could find (most of them talking about CLASSPATH), I cant solve mine.
Examples of the topics I found and tried:
java.lang.NoClassDefFoundError with HBase Scan
I'm using Hadoop 2.5.1 with HBase 0.98.11 on Ubuntu 14.04
I set up pseudo-distributed mode and running hadoop with hbase successfully. After I want to set up the full-distributed mode, jobs fail with NoClassDefFound error. I tried adding "export HADOOP_CLASSPATH=/usr/local/hbase-0.98.11-hadoop2/bin/hbase classpath" into hadoop-env (also yarn-env), still dont work.
One notice I found is if I comment the
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
I can run the jobs SUCCESSFULLY. BUT it seems that I run it on single not multi node.
Here are some of the configs:
mapred-site
<property>
<name>mapred.job.tracker</name>
<value>hadoop1:54311</value>
<description>The host and port that the MapReduce job tracker runs
at. If "local", then jobs are run in-process as a single map
and reduce task.
</description>
</property>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>`
hdfs-site
<property>
<name>dfs.replication</name>
<value>2</value>
<description>Default block replication.
The actual number of replications can be specified when the file is created.
The default is used if replication is not specified in create time.
</description>
</property>
<property>
<name>dfs.namenode.name.dir</name>
<value>file:/usr/local/hadoop_store/hdfs/namenode</value>
</property>
<property>
<name>dfs.datanode.data.dir</name>
<value>file:/usr/local/hadoop_store/hdfs/datanode</value>
</property>
<property>
<name>dfs.datanode.use.datanode.hostname</name>
<value>false</value>
</property>
<property>
<name>dfs.namenode.datanode.registration.ip-hostname-check</name>
<value>false</value>
</property>
<property>
<name>dfs.permissions</name>
<value>false</value>
</property>
yarn-site
<property>
<name>yarn.nodemanager.aux-services</name>
<value>mapreduce_shuffle</value>
<description>shuffle service that needs to be set for Map Reduce to run
</description>
</property>
<property>
<name>yarn.nodemanager.aux-services.mapreduce_shuffle.class</name>
<value>org.apache.hadoop.mapred.ShuffleHandler</value>
</property>
In yarn-env and hadoop-env there is just as default except the HADOOP_CLASSPATH (which doesn't change things even if I add it or not..)
Here is the error trace:
2015-04-25 23:29:25,143 FATAL [main] org.apache.hadoop.mapred.YarnChild: Error running child : java.lang.NoClassDefFoundError: org/apache/hadoop/hbase/HBaseConfiguration at apriori2$FrequentItemsReduce.reduce(apriori2.java:550) at apriori2$FrequentItemsReduce.reduce(apriori2.java:532) at org.apache.hadoop.mapreduce.Reducer.run(Reducer.java:171) at org.apache.hadoop.mapred.Task$NewCombinerRunner.combine(Task.java:1651) at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.sortAndSpill(MapTask.java:1611) at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:1462) at org.apache.hadoop.mapred.MapTask$NewOutputCollector.close(MapTask.java:700) at org.apache.hadoop.mapred.MapTask.closeQuietly(MapTask.java:1990) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:774) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:340) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:168) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:415) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1614) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:163)
Really thanks for every help sir.
