当我在齐柏林飞艇中执行简单的斯巴克脚本时：
代码 %spark.r 2 + 2 我发现以下错误：

org.apache.zeppelin.interpreter.InterpreterException: sparkr is not  responding 
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at org.apache.zeppelin.spark.ZeppelinR.open(ZeppelinR.java:165)
at org.apache.zeppelin.spark.SparkRInterpreter.open(SparkRInterpreter.java:91)
at org.apache.zeppelin.interpreter.LazyOpenInterpreter.open(LazyOpenInterpreter.java:69)
at org.apache.zeppelin.interpreter.remote.RemoteInterpreterServer$InterpretJob.jobRun(RemoteInterpreterServer.java:618)
at org.apache.zeppelin.scheduler.Job.run(Job.java:186)
at org.apache.zeppelin.scheduler.FIFOScheduler$1.run(FIFOScheduler.java:139)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at

甚至我也在zeppline.env.sh中设置了spark_home和java_home