Thanks Shivaram, This was the issue. Now I have installed Rscript on all the nodes in Spark cluster and it works now bith from script as well as R prompt. Thanks
Stuti Awasthi From: Shivaram Venkataraman [mailto:[email protected]] Sent: Tuesday, August 19, 2014 1:17 PM To: Stuti Awasthi Cc: [email protected] Subject: Re: Cannot run program "Rscript" using SparkR Hi Stuti Could you check if Rscript is installed on all of the worker machines in the Spark cluster ? You can ssh into the machines and check if Rscript can be found in $PATH. Thanks Shivaram On Mon, Aug 18, 2014 at 10:05 PM, Stuti Awasthi <[email protected]<mailto:[email protected]>> wrote: Hi All, I am using R 3.1 and Spark 0.9 and installed SparkR successfully. Now when I execute the “pi.R” example using spark master as local, then script executes fine. But when I try to execute same example using master as spark cluster master, then in throws Rcript error. Error : java.io.IOException: Cannot run program "Rscript": java.io.IOException: error=2, No such file or directory at java.lang.ProcessBuilder.start(ProcessBuilder.java:475) at edu.berkeley.cs.amplab.sparkr.RRDD.compute(RRDD.scala:113) at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:241) at org.apache.spark.rdd.RDD.iterator(RDD.scala:232) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:109) at org.apache.spark.scheduler.Task.run(Task.scala:53) at org.apache.spark.executor.Executor$TaskRunner$$anonfun$run$1.apply$mcV$sp(Executor.scala:213) at org.apache.spark.deploy.SparkHadoopUtil$$anon$1.run(SparkHadoopUtil.scala:46) at org.apache.spark.deploy.SparkHadoopUtil$$anon$1.run(SparkHadoopUtil.scala:45) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:416) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121) at org.apache.spark.deploy.SparkHadoopUtil.runAsUser(SparkHadoopUtil.scala:45) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:178) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) at java.lang.Thread.run(Thread.java:679) I have checked, Rscript is present in my system and I also exported it in CLASSPATH and PATH variables. Script is given the permission 777 as there are multiple users of the clusters. $ which Rscript /usr/local/bin/Rscript $ type -a Rscript Rscript is /usr/local/bin/Rscript $ echo $PATH /usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/var/local/maven3/bin/:/var/local/ant/bin/:/usr/lib/jvm/java-6-openjdk:/usr/local/bin/Rscript $ echo $CLASSPATH :/usr/local/bin/Rscript Also I am getting same error if I open R prompt and then execute the commands one after another OR if I execute the script. Please suggest Thanks Stuti Awasthi ::DISCLAIMER:: ---------------------------------------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. E-mail transmission is not guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or may contain viruses in transmission. The e mail and its contents (with or without referred errors) shall therefore not attach any liability on the originator or HCL or its affiliates. Views or opinions, if any, presented in this email are solely those of the author and may not necessarily reflect the views or opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of authorized representative of HCL is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any email and/or attachments, please check them for viruses and other defects. ----------------------------------------------------------------------------------------------------------------------------------------------------
