14
花費很長的時間去解決如何安裝SparkR我想可能有一些問題,與包裝後...SparkR filterRDD和flatMap不工作
請記住我是很新的火花所以我不當然,如果我做了正確的事情。
從我已經安裝了R A新鮮的Ubuntu EC2 64位實例和JDK
我GIT克隆apache的火花回購和內置的:
git clone https://github.com/apache/spark.git
cd spark
build/mvn -DskipTests -Psparkr package
然後我改變了我的.Rprofile
引用通過包括以下線r目錄....
Sys.setenv(SPARK_HOME="/home/ubuntu/spark")
.libPaths(c(file.path(Sys.getenv("SPARK_HOME"), "R", "lib"), .libPaths()))
然後開始RI嘗試通過給快速入門指南運行後3210
下面是下面的步驟我把...
R> library(SparkR)
R> sc <- sparkR.init(master="local")
R> textFile <- SparkR:::textFile(sc, "/home/ubuntu/spark/README.md")
R> cc <- SparkR:::count(textFile)
R> t10 <- SparkR:::take(textFile,10)
一切工作正常,直到這裏...以下線不工作...
R> SparkR:::filterRDD(textFile, function(line){ grepl("Spark", line)})
Error: class(objId) == "jobj" is not TRUE
R> traceback()
7: stop(sprintf(ngettext(length(r), "%s is not TRUE", "%s are not all TRUE"),
ch), call. = FALSE, domain = NA)
6: stopifnot(class(objId) == "jobj")
5: callJMethod([email protected], "toString")
4: paste(callJMethod([email protected], "toString"), "\n", sep = "")
3: cat(paste(callJMethod([email protected], "toString"), "\n", sep = ""))
2: function (object)
standardGeneric("show")(x)
1: function (object)
standardGeneric("show")(x)
那並不是另一個例子沒有工作在下面。
R> SparkR:::flatMap(textFile,
function(line) {
strsplit(line, " ")[[1]]
})
Error: class(objId) == "jobj" is not TRUE
下面是我的會話信息...
R> > sessionInfo()
R version 3.2.0 (2015-04-16)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Ubuntu 14.04.2 LTS
locale:
[1] LC_CTYPE=en_US.UTF-8 LC_NUMERIC=C
[3] LC_TIME=en_US.UTF-8 LC_COLLATE=en_US.UTF-8
[5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8
[7] LC_PAPER=en_US.UTF-8 LC_NAME=C
[9] LC_ADDRESS=C LC_TELEPHONE=C
[11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C
attached base packages:
[1] stats graphics grDevices utils datasets methods base
other attached packages:
[1] SparkR_1.4.0
這裏任何幫助,將不勝感激....