Hello, I'm trying to use R with an distributed File system (HDFS) and when I launch a MapReduce job with DSL package, I've got this message : *"Streaming Command Failed! Error in !unlist(lapply(chunks, is.null)) : invalid argument type"* I am using the Cloudera CDH4 Virtual Machine, R version is 2.15.3 and Hadoop 0.20.2 CDH3u4. Commands lines : /library(DSL) storage<-DStorage(type="HDFS", base_dir="/user/cloudera/dc") dl <- DList( line1 = "This is the first line.", line2 = "Now, the second line.", DStorage=storage ) res <- DLapply( dl, function(x) unlist(strsplit(x, " ")) )/ Somebody knows something about this problem? Thanks and Regards, Vincent. -- View this message in context: http://r.789695.n4.nabble.com/Problems-with-the-DSL-package-tp4664059.html Sent from the R help mailing list archive at Nabble.com.