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hadoophdfsfile-copying

hadoop copy a local file to Hadoop SF error

i want to copy a local file in Hadoop FS. i run this command:

sara@ubuntu:/usr/lib/hadoop/hadoop-2.3.0/bin$  hadoop fs -copyFromLocal /home/sara/Downloads/CA-GrQc.txt /usr/lib/hadoop/hadoop-2.3.0/${HADOOP_HOME}/hdfs/namenode

and 

sara@ubuntu:/usr/lib/hadoop/hadoop-2.3.0/bin$  hdfs dfs -copyFromLocal /home/sara/Downloads/CA-GrQc.txt /usr/lib/hadoop/hadoop-2.3.0/${HADOOP_HOME}/hdfs/namenode

and even if i run : hdfs dfs -ls

i get this error:

> WARN util.NativeCodeLoader: Unable to load native-hadoop library for
> your platform... using builtin-java classes where applicable
> copyFromLocal: `.': No such file or directory

i don't know why i get this error? Any idea please?

Solution

  • According to your input your Hadoop installation seems to be working fine. What is wrong, it that hadoop fs -copyFromLocal expect the directory HDFS directory as target directory, but not the local directory where the Hadoop stores its blocks.

    So in you case the command should look like(for example):

    sara@ubuntu:/usr/lib/hadoop/hadoop-2.3.0/bin$  hdfs dfs -copyFromLocal /home/sara/Downloads/CA-GrQc.txt /sampleDir/

    Where the sampleDir is the directory you create with hadoop fs -mkdir command.