"R extension Error - Process failed, could not initialize R via JRI"

User13User13 Member Posts: 155  Guru
edited May 23 in Help
Hi,



Been trying a few days to fix this error. Process failed, could not initialize R via JRI.



I am using macbook, and followed this strictly:



======

After you have installed a proper version of R, you need to install rJava and JavaGD available on CRAN by typing the following command on the R console:

install.packages(c("rJava","JavaGD"))

Then you should activate rJava and JavaGD in the R package management.

>>I installed both packages, and started them using library(rJava) and library(JavaGD)

>> R is definitely working on my machine



Add following lines to your ~/.bash_profile or ~/.profile:

export R_HOME=/Library/Frameworks/R.framework/Resources

export JAVA_HOME=$(/usr/libexec/java_home)

>> I did this as well, and mine entries are

>> export R_HOME=/Library/Frameworks/R.framework/Resources

>> export JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.8.0_31.jdk/Contents/Home



Now you can configure RapidMiner. Click on Select JRI library file and select the JRI dynamic-link library (e.g. /Library/Frameworks/R.framework/Resources/library/rJava/jri/libjri.jnilib).

>> Selected /Library/Frameworks/R.framework/Versions/3.0/Resources/library/rJava/jri/libjri.jnilib



After selecting the file you have to restart RapidMiner and the console you have started RapidMiner with.

>> I did the restart, but the error persists.



Thanks in advanced.

Tagged:

Answers

  • User13User13 Member Posts: 155  Guru
    Hi Brian,

    Would you double check that the bit architectures are the same for Java, RapidMiner, and R? They all need to be the same and double check that you are using Java version 7.

    Regards,
    Thomas
  • User13User13 Member Posts: 155  Guru
    Thanks Thomas,

    1) I checked that both java and R are 64bits, I presumed Rapidminer is as well since I downloaded the mac version from rapidminer.com

    2) I also changed to 1.7 java, and then restarted machine, same error persists,

    Any idea how to solve this ? :)

    my env:
    TERM_PROGRAM=Apple_Terminal
    TERM=xterm-256color
    SHELL=/bin/bash
    TMPDIR=/var/folders/pj/rbkfxc9n5c19w3jm5g7_4b740000gn/T/
    Apple_PubSub_Socket_Render=/private/tmp/com.apple.launchd.p1LsP9mJUN/Render
    TERM_PROGRAM_VERSION=343
    OLDPWD=/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home
    TERM_SESSION_ID=D70F8BF5-68A1-465A-8A31-47A6AD309347
    USER=brianho
    SSH_AUTH_SOCK=/private/tmp/com.apple.launchd.BhzMoGUTxw/Listeners
    __CF_USER_TEXT_ENCODING=0x1F5:0x0:0x0
    PATH=/Library/Frameworks/R.framework/Versions/3.0/Resources/library/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/opt/X11/bin
    PWD=/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home
    JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk1.7.0_75.jdk/Contents/Home
    XPC_FLAGS=0x0
    XPC_SERVICE_NAME=0
    HOME=/Users/brianho
    SHLVL=1
    LOGNAME=brianho
    LC_CTYPE=UTF-8
    R_HOME=/Library/Frameworks/R.framework/Resources
    _=/usr/bin/env
  • User13User13 Member Posts: 155  Guru
    Hi Brian,

    I assume your environment variables above are not set for RapidMiner Studio when the standard launcher is used. In order to make them accessible for the application a bash terminal needs to be started and RapidMiner Studio must be launched via the RapidMiner-Studio.sh from that shell. To avoid this procedure and use the standard launcher icon it might be necessary to set the R_HOME variable using */etc/launchd.conf*. Here "setenv R_HOME " needs to be added and the system must be rebooted for the changes to take effect.

    Cheers,
    Helge
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