无法解析主网址:'spark.bluemix.net'



我正在尝试连接到IBM的Spark作为在台式机上运行的Rstudio在bluemix上运行的服务。

我已经从IBM的数据科学体验上运行的自动配置的rstudio环境复制了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"

我正在尝试这样的连接:

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)
    ...

stackoverflow上还有其他一些问题,上面有类似的错误消息,但它们并不试图连接到bluemix上运行的Spark Service。


更新1

我已经更改了config.yml,看起来像这样:

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"

...和我的连接代码看起来像:

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)
    ...

图书馆试图解析URL,但您正在给它一个主机名。

尝试spark://spark.bluemix.netspark.master

请关注博客文章http://datascience.ibm.com/blog/access-ibm-analytics-for-apache-spark-park-from-rstudio/与dsx连接bluemix sparkaasrstudio。

我收到了工程团队的以下回应:

rstudio桌面版本目前不支持使用Sparklyr软件包连接bluemix sparkaas服务

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