I use hadoop-2.2.0 under CentOS-5.8,then I set JAVA_HOME ,HADOOP_HOME and
CLASSPATH
[hadoop@master ~]$ echo $JAVA_HOME
/home/software/jdk1.7.0_02
[hadoop@master ~]$ echo $HADOOP_HOME
/home/software/hadoop-2.2.0
[hadoop@master mapreduce]$ echo $CLASSPATH
.:/home/software/hadoop-2.2.0/share/hadoop/mapreduce/hadoop-mapreduce-client-core-2.2.0.jar:
I write a java file,like follows:
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.Text;
public class WordCount1{
...........
}
Then I compile this java file,but it raise following errors,like follows:
[hadoop@master ~]$ javac WordCount1.java
WordCount1.java:2: error: package org.apache.hadoop.conf does not exist
import org.apache.hadoop.conf.Configuration;
^
WordCount1.java:3: error: package org.apache.hadoop.fs does not exist
import org.apache.hadoop.fs.Path;
I have set hadoop-mapreduce-client-core-2.2.0.jar into CLASSPATH, why it still
raise above error? Where is wrong?
Thanks.
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