issue installing h2o on r

问题

I used install package to install h2o. While I could do h2o.init(), the h2o.autoML function isn't found:

could not find function "h2o.automl"

After some searching I installed the 'nightly bleeding edge' version in tar.gz. but after install that even h2o.init() no longer works and shows this error:

Error: package or namespace load failed for ‘h2o’ in get(method, envir = home):
 lazy-load database '/Library/Frameworks/R.framework/Versions/3.4/Resources/library/h2o/R/h2o.rdb' is corrupt
In addition: Warning messages:
1: In .registerS3method(fin[i, 1], fin[i, 2], fin[i, 3], fin[i, 4],  :
restarting interrupted promise evaluation
2: In get(method, envir = home) :
restarting interrupted promise evaluation
3: In get(method, envir = home) : internal error -3 in R_decompress1

回答1:

The h2o.automl() function has been included in the nightly releases for the past 2 months, so it should be in there if you have correctly installed the package. I recommend the nightly release over the 3.12 "preview release" because 3.12 has some bugs in it with AutoML.

The nightly release (from last night) can be installed here:

install.packages("h2o", type="source", repos="https://h2o-release.s3.amazonaws.com/h2o/master/3978/R")

Those reading this later, should visit this page to get the link to the most recent version.

After installation in R, start up the H2O cluster and verify the version. It should be the same as below:

> h2o.init()
Reading in config file: ./../../.h2oconfig

H2O is not running yet, starting it now...

Note:  In case of errors look at the following log files:
    /var/folders/2j/jg4sl53d5q53tc2_nzm9fz5h0000gn/T//RtmpV47QKn/h2o_me_started_from_r.out
    /var/folders/2j/jg4sl53d5q53tc2_nzm9fz5h0000gn/T//RtmpV47QKn/h2o_me_started_from_r.err

java version "1.8.0_45"
Java(TM) SE Runtime Environment (build 1.8.0_45-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode)

Starting H2O JVM and connecting: .. Connection successful!

R is connected to the H2O cluster: 
    H2O cluster uptime:         1 seconds 983 milliseconds 
    H2O cluster version:        3.13.0.3978 
    H2O cluster version age:    10 hours and 6 minutes  
    H2O cluster name:           H2O_started_from_R_me_flj500 
    H2O cluster total nodes:    1 
    H2O cluster total memory:   3.56 GB 
    H2O cluster total cores:    8 
    H2O cluster allowed cores:  8 
    H2O cluster healthy:        TRUE 
    H2O Connection ip:          localhost 
    H2O Connection port:        54321 
    H2O Connection proxy:       NA 
    H2O Internal Security:      FALSE 
    H2O API Extensions:         XGBoost, Algos, AutoML, Core V3, Core V4 
    R Version:                  R version 3.3.2 (2016-10-31)

AutoML will be included in the next stable release of H2O, 3.14.0.1, to be released in the next week or two.

来源：https://stackoverflow.com/questions/45510759/issue-installing-h2o-on-r

标签

installation

h2o