Dear all,
Today I am trying to run a simple code by following the below tutorial :-
http://hadoop.apache.org/hdfs/docs/current/libhdfs.html
I followed the below steps :-
1. Set LD_LIBRARY_PATH & CLASSPATH as :
export
LD_LIBRARY_PATH=/home/hadoop/project/hadoop-0.20.2/c++/Linux-amd64-64/lib:/usr/java/jdk1.6.0_18/jre/lib/amd64/libjava.so
export
CLASSPATH=$CLASSPATH:$HADOOP_HOME:$HADOOP_HOME/lib:/home/hadoop/project/hadoop-0.20.2/c++/Linux-amd64-64/lib:/usr/java/jdk1.6.0_18/jre/lib/amd64
2. write above_sample.c program & put it into
$HADOOP_HOME/src/c++/libhdfs directory
3. After compiling with the below command I am facing issues as :-
gcc above_sample.c -I/home/hadoop/project/hadoop-0.20.2/src/c++/libhdfs
-L/home/hadoop/project/hadoop-0.20.2/src/c++/libhdfs
-L/home/hadoop/project/hadoop-0.20.2/c++/Linux-amd64-64/lib
-L$HADOOP_HOME/c++/Linux-amd64-64/lib/libhdfs.so.0 -lhdfs -I$HADOOP_HOME
-I$HADOOP_HOME/lib /usr/java/jdk1.6.0_18/jre/lib/amd64/server/libjvm.so
/home/hadoop/project/hadoop-0.20.2/c++/Linux-amd64-64/lib/libhdfs.so.0
-o above_sample
bash-3.2$ ./above_sample
Error occurred during initialization of VM
Unable to load native library:
/home/hadoop/project/hadoop-0.20.2/c++/Linux-amd64-64/libjava.so: cannot
open shared object file: No such file or directory
Now when I try the below command :
gcc above_sample.c -I/home/hadoop/project/hadoop-0.20.2/src/c++/libhdfs
-L/home/hadoop/project/hadoop-0.20.2/src/c++/libhdfs
-L/home/hadoop/project/hadoop-0.20.2/c++/Linux-amd64-64/lib
-L$HADOOP_HOME/c++/Linux-amd64-64/lib/libhdfs.so.0 -lhdfs -I$HADOOP_HOME
-I$HADOOP_HOME/lib /usr/java/jdk1.6.0_18/jre/lib/amd64/server/libjvm.so
/home/hadoop/project/hadoop-0.20.2/c++/Linux-amd64-64/lib/libhdfs.so.0
/usr/java/jdk1.6.0_18/jre/lib/amd64/libjava.so -o above_sample
/usr/bin/ld: warning: libverify.so, needed by
/usr/java/jdk1.6.0_18/jre/lib/amd64/libjava.so, not found (try using
-rpath or -rpath-link)
/usr/java/jdk1.6.0_18/jre/lib/amd64/libjava.so: undefined reference to
`VerifyClassname@SUNWprivate_1.1'
/usr/java/jdk1.6.0_18/jre/lib/amd64/libjava.so: undefined reference to
`VerifyClassForMajorVersion@SUNWprivate_1.1'
/usr/java/jdk1.6.0_18/jre/lib/amd64/libjava.so: undefined reference to
`VerifyFixClassname@SUNWprivate_1.1'
/usr/java/jdk1.6.0_18/jre/lib/amd64/libjava.so: undefined reference to
`VerifyClass@SUNWprivate_1.1'
collect2: ld returned 1 exit status
bash-3.2$
Can Someone guide me the steps needed to run a libhdfs simple program in
Hadoop Cluster
Thanks & best Regards
Adarsh Sharma
