Iam unable to install rJava in centos R, its the base to install rhdfs. Please help and look at the output i got while installing rJava.> install.packages( c("rJava"))Installing package into ‘/home/training/R/x86_64-redhat-linux-gnu-library/3.1’ (as ‘lib’ is unspecified) --- Please select a CRAN mirror for use in this session --- trying URL 'http://ftp.iitm.ac.in/cran/src/contrib/rJava_0.9-6.tar.gz' Content type 'application/x-gzip' length 567515 bytes (554 Kb) opened URL =================================================downloaded 554 Kb * installing *source* package ‘rJava’ ... ** package ‘rJava’ successfully unpacked and MD5 sums checked checking for gcc... gcc -m64 -std=gnu99 checking whether the C compiler works... yes checking for C compiler default output file name... a.out checking for suffix of executables... checking whether we are cross compiling... no checking for suffix of object files... o checking whether we are using the GNU C compiler... yes checking whether gcc -m64 -std=gnu99 accepts -g... yes checking for gcc -m64 -std=gnu99 option to accept ISO C89... none needed checking how to run the C preprocessor... gcc -m64 -std=gnu99 -E checking for grep that handles long lines and -e... /bin/grep checking for egrep... /bin/grep -E checking for ANSI C header files... yes checking for sys/wait.h that is POSIX.1 compatible... yes checking for sys/types.h... yes checking for sys/stat.h... yes checking for stdlib.h... yes checking for string.h... yes checking for memory.h... yes checking for strings.h... yes checking for inttypes.h... yes checking for stdint.h... yes checking for unistd.h... yes checking for string.h... (cached) yes checking sys/time.h usability... yes checking sys/time.h presence... yes checking for sys/time.h... yes checking for unistd.h... (cached) yes checking for an ANSI C-conforming const... yes checking whether time.h and sys/time.h may both be included... yes configure: checking whether gcc -m64 -std=gnu99 supports static inline... yes checking whether setjmp.h is POSIX.1 compatible... yes checking whether sigsetjmp is declared... yes checking whether siglongjmp is declared... yes checking Java support in R... present: interpreter : '/usr/bin/java' archiver : '/usr/bin/jar' compiler : '/usr/bin/javac' header prep.: '/usr/bin/javah' cpp flags : '-I/usr/java/jdk1.6.0_31/jre/../include -I/usr/java/jdk1.6.0_31/jre/../include/linux' java libs : '-L/usr/java/jdk1.6.0_31/jre/lib/amd64/server -ljvm' checking whether Java run-time works... yes checking whether -Xrs is supported... yes checking whether JNI programs can be compiled... yes checking JNI data types... configure: error: One or more JNI types differ from the corresponding native type. You may need to use non-standard compiler flags or a different compiler in order to fix this. ERROR: configuration failed for package ‘rJava’ * removing ‘/home/training/R/x86_64-redhat-linux-gnu-library/3.1/rJava’ The downloaded source packages are in ‘/tmp/Rtmp1RKjkQ/downloaded_packages’ Warning message: In install.packages(c("rJava")) : installation of package ‘rJava’ had non-zero exit status Please find below what I got from R CMD javareconf -ed, its showing the correct path i have given on the bash.profile file. please let me know what about i do to install rJava and then rhdfs.. $ R CMD javareconf -ed Java interpreter : /etc/alternatives/java_sdk_openjdk/jre/bin/java Java version : 1.6.0_30 Java home path : /etc/alternatives/java_sdk_openjdk Java compiler : /etc/alternatives/java_sdk_openjdk/bin/javac Java headers gen.: /etc/alternatives/java_sdk_openjdk/bin/javah Java archive tool: /etc/alternatives/java_sdk_openjdk/bin/jar trying to compile and link a JNI progam detected JNI cpp flags : -I$(JAVA_HOME)/include -I$(JAVA_HOME)/include/linux detected JNI linker flags : -L/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre/lib/amd64/server -ljvm gcc -m64 -std=gnu99 -I/usr/include/R -DNDEBUG -I/etc/alternatives/java_sdk_openjdk/include -I/etc/alternatives/java_sdk_openjdk/include/linux -I/usr/local/include -fpic -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic -c conftest.c -o conftest.o gcc -m64 -std=gnu99 -shared -L/usr/local/lib64 -o conftest.so conftest.o -L/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre/lib/amd64/server -ljvm -L/usr/lib64/R/lib -lR JAVA_HOME : /etc/alternatives/java_sdk_openjdk Java library path: /usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre/lib/amd64/server JNI cpp flags : -I$(JAVA_HOME)/include -I$(JAVA_HOME)/include/linux JNI linker flags : -L/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre/lib/amd64/server -ljvm Updating Java configuration in /usr/lib64/R /usr/lib64/R/bin/javareconf: line 405: /usr/lib64/R/etc/Makeconf.new: Permission denied *** cannot create /usr/lib64/R/etc/Makeconf.new *** Please run as root if required. [[alternative HTML version deleted]]