无法解析主网址:'spark.bluemix.net'

时间:2017-03-07 10:03:39

标签: apache-spark ibm-cloud rstudio sparklyr data-science-experience

我正在尝试从桌面计算机上运行的RStudio连接到运行在Bluemix上的IBM的Spark as a Service。

我从IBM的数据科学体验中运行的自动配置的RStudio环境中复制了config.yml

default:
    method: "shell"

CS-DSX:
    method: "bluemix"
    spark.master: "spark.bluemix.net"
    spark.instance.id: "myinstanceid"
    tenant.id: "mytenantid"
    tenant.secret: "mytenantsecret"
    hsui.url: "https://cdsx.ng.bluemix.net"

我正试图像这样连接:

install.packages("sparklyr")

library(sparklyr)
spark_install(version = "1.6.2") # installed spark to '~/Library/Caches/spark/spark-1.6.2-bin-hadoop2.6'

spark_home = '~/Library/Caches/spark/spark-1.6.2-bin-hadoop2.6'

config = spark_config(file = "./config.yml", use_default = FALSE, config = "CSX-DSX")

sc <- spark_connect(spark_home = spark_home, config = config)

错误:

17/03/07 09:36:19 ERROR SparkContext: Error initializing SparkContext.
org.apache.spark.SparkException: Could not parse Master URL: 'spark.bluemix.net'
    at org.apache.spark.SparkContext$.org$apache$spark$SparkContext$$createTaskScheduler(SparkContext.scala:2735)
    at org.apache.spark.SparkContext.<init>(SparkContext.scala:522)
    at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2281)
    at org.apache.spark.SparkContext.getOrCreate(SparkContext.scala)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    ...

还有一些关于stackoverflow的问题有类似的错误消息,但他们并没有尝试连接到Bluemix上运行的Spark服务。

更新1

我已将config.yml更改为:

default:
    method: "bluemix"
    spark.master: "spark://spark.bluemix.net:7070"
    spark.instance.id: "7a4089bf-3594-4fdf-8dd1-7e9fd7607be5"
    tenant.id: "sdd1-7e9fd7607be53e-39ca506ba762"
    tenant.secret: "6146a713-949f-4d4e-84c3-9913d2165b9e"
    hsui.url: "https://cdsx.ng.bluemix.net"

...我的连接代码如下所示:

install.packages("sparklyr")
library(sparklyr)
spark_install(version = "1.6.2")
spark_home = '~/Library/Caches/spark/spark-1.6.2-bin-hadoop2.6'
config = spark_config(file = "./config.yml", use_default = FALSE)
sc <- spark_connect(spark_home = spark_home, config = config)

但是,错误现在是:

Error in force(code) : 
  Failed during initialize_connection: java.lang.NullPointerException
    at org.apache.spark.SparkContext.<init>(SparkContext.scala:583)
    at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2281)
    at org.apache.spark.SparkContext.getOrCreate(SparkContext.scala)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at sparklyr.Invoke$.invoke(invoke.scala:94)
    ...

3 个答案:

答案 0 :(得分:0)

图书馆尝试解析网址,但您要为其提供主机名。

spark://spark.bluemix.net尝试spark.master

答案 1 :(得分:0)

请关注博文http://datascience.ibm.com/blog/access-ibm-analytics-for-apache-spark-from-rstudio/,以便从DSX RStudio连接Bluemix SparkaaS。

答案 2 :(得分:0)

我收到了工程团队的以下回复:

  

RStudio桌面版本目前不支持使用sparklyr软件包连接Bluemix SparkaaS服务