Error while using h2o.init() in R

Question

I get the following error whenever I use h2o.init():

localh2o<-h2o.init()

H2O is not running yet, starting it now...
Error in system2(command, "-version", stdout = TRUE, stderr = TRUE) :
'""' not found
In addition: Warning message:
In .h2o.checkJava() :
Found JRE at C:/Program Files (x86)/Java/jre7/bin/java.exe but H2O requires the JDK to run

I am running it on RStudio Version 0.99.473 and R version 3.2.2, 64 bit os

Do you have a jdk installed? openjdk.java.net

devmacrile
– devmacrile

2015-10-01 20:14:58 +00:00
Commented Oct 1, 2015 at 20:14 — devmacrile
– devmacrile, Commented Oct 1, 2015 at 20:14

Artjom B. · Accepted Answer · 2015-10-01 20:15:39Z

3

The error message is pretty self-explanatory:

Found JRE at C:/Program Files (x86)/Java/jre7/bin/java.exe but H2O requires the JDK to run

You need to install the JDK and point the JAVA_HOME environment variable to the JDK directory (the parent of the bin directory), if it isn't automatically done by the installer.

answered Oct 1, 2015 at 20:15

Artjom B.

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3 Comments

Rohan Karkhanis Over a year ago

But that's the warning message. The actual error message is Error in system2(command, "-version", stdout = TRUE, stderr = TRUE) : '""' not found How do I solve that?

Artjom B. Over a year ago

So, you're saying that you have a JDK installed and it is properly configured? What do you see if you type javac -version in the CMD?

Rohan Karkhanis Over a year ago

Thanks! I updated my JDK version as you suggested, and it works now.

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