在rstudio中尝试使用sparkr连接到spark群集时：

if (nchar(Sys.getenv("SPARK_HOME")) < 1) {
  Sys.setenv(SPARK_HOME = "/usr/lib/spark/spark-2.1.1-bin-hadoop2.6")
  .libPaths(c(file.path(Sys.getenv("SPARK_HOME"), "R", "lib"), .libPaths()))
}

library(SparkR, lib.loc = c(file.path(Sys.getenv("SPARK_HOME"), "R", "lib")))

# Starting a sparkR session

sparkR.session(master = "spark://myIpAddress.eu-west-1.compute.internal:7077")

我收到以下错误消息：

Spark package found in SPARK_HOME: /usr/lib/spark/spark-2.1.1-bin-hadoop2.6
Launching java with spark-submit command /usr/lib/spark/spark-2.1.1-bin-hadoop2.6/bin/spark-submit   sparkr-shell /tmp/RtmpMWFrt6/backend_port71e6731ea922 
Using Spark's default log4j profile: org/apache/spark/log4j-defaults.properties
Setting default log level to "WARN".
To adjust logging level use sc.setLogLevel(newLevel). For SparkR, use setLogLevel(newLevel).
17/05/24 16:17:32 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
17/05/24 16:17:37 WARN ObjectStore: Failed to get database global_temp, returning NoSuchObjectException
Java ref type org.apache.spark.sql.SparkSession id 1

在spark master中，我看到sparkr应用程序正在运行，但没有可用的sc变量。感觉这个错误可能与metastore有关，但不确定。有人知道是什么阻止了我的spark会话的正确启动吗？
谢谢，迈克尔