[GitHub] spark issue #13636: [SPARK-15637][SPARKR] Remove R version check since maske...

[felixcheung]

Github user felixcheung commented on the issue:

    https://github.com/apache/spark/pull/13636
  
    FYI, this is what I see running on R 3.3:
    ```
    1. Error: string operators (@test_sparkSQL.R#1163) 
-----------------------------
    unable to find an inherited method for function ‘startsWith’ for 
signature ‘"character"’
    1: expect_true(startsWith("Hello World", "Hello")) at 
/opt/spark-2.0.0-bin-hadoop2.6/R/lib/SparkR/tests/testthat/test_sparkSQL.R:1163
    2: expect(identical(as.vector(object), TRUE), sprintf("%s isn't true.", 
lab), info = info)
    3: as.expectation(exp, ..., srcref = srcref)
    4: identical(as.vector(object), TRUE)
    5: as.vector(object)
    6: startsWith("Hello World", "Hello")
    7: (function (classes, fdef, mtable)
       {
           methods <- .findInheritedMethods(classes, fdef, mtable)
           if (length(methods) == 1L)
               return(methods[[1L]])
           else if (length(methods) == 0L) {
               cnames <- paste0("\"", vapply(classes, as.character, ""), "\"", 
collapse = ", ")
               stop(gettextf("unable to find an inherited method for function 
%s for signature %s",
                   sQuote(fdef@generic), sQuote(cnames)), domain = NA)
           }
           else stop("Internal error in finding inherited methods; didn't 
return a unique method",
               domain = NA)
       })(list("character"), structure(function (x, prefix)
       {
           standardGeneric("startsWith")
       }, generic = structure("startsWith", package = "SparkR"), package = 
"SparkR", group = list(), valueClass = character(0), signature = c("x",
       "prefix"), default = `\001NULL\001`, skeleton = (function (x, prefix)
       stop("invalid call in method dispatch to 'startsWith' (no default 
method)", domain = NA))(x,
           prefix), class = structure("nonstandardGenericFunction", package = 
"methods")),
           <environment>)
    8: stop(gettextf("unable to find an inherited method for function %s for 
signature %s",
           sQuote(fdef@generic), sQuote(cnames)), domain = NA)
    ```
    
    I will double check if there is indeed a problem with `startsWith("Hello 
World", "Hello")` when SparkR is loaded, or the tests are not up-to-date on 
what's being masked.



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