added extended message to h2o.init to help user get around version mi…

…smatch error.

h2o-py/h2o/backend/cluster.py

@@ -218,16 +218,19 @@ def check_version(self, strict=False):
             if build_number_h2o is None or build_number_h2o == "unknown":
                 message = ("Version mismatch. H2O is version {0}, but the h2o-python package is version {1}. "
                            "Upgrade H2O and h2o-Python to latest stable version - "
-                           "http://h2o-release.s3.amazonaws.com/h2o/latest_stable.html"
+                           "http://h2o-release.s3.amazonaws.com/h2o/latest_stable.html.  To circumvent this error "
+                           "message (not recommended), you can set strict_version_check=False."
                            ).format(ver_h2o, ver_pkg)
             elif build_number_h2o == "99999":
                 message = ("Version mismatch. H2O is version {0}, but the h2o-python package is version {1}. "
-                           "This is a developer build, please contact your developer."
+                           "This is a developer build, please contact your developer.  To circumvent this error "
+                           "message (not recommended), you can set strict_version_check=False."
                            ).format(ver_h2o, ver_pkg)
             else:
                 message = ("Version mismatch. H2O is version {0}, but the h2o-python package is version {1}. "
                            "Install the matching h2o-Python version from - "
-                           "http://h2o-release.s3.amazonaws.com/h2o/{2}/{3}/index.html."
+                           "http://h2o-release.s3.amazonaws.com/h2o/{2}/{3}/index.html.  To circumvent this error "
+                           "message (not recommended), you can set strict_version_check=False."
                            ).format(ver_h2o, ver_pkg, branch_name_h2o, build_number_h2o)
             if strict:
                 raise H2OConnectionError(message)

h2o-r/h2o-package/R/connection.R

@@ -261,18 +261,22 @@ h2o.init <- function(ip = "localhost", port = 54321, name = NA_character_, start
 
       if( is.null( build_number_H2O ) ){
         stop(sprintf("Version mismatch! H2O is running version %s but h2o-R package is version %s.
-        Upgrade H2O and R to latest stable version - https://h2o-release.s3.amazonaws.com/h2o/latest_stable.html",
+        Upgrade H2O and R to latest stable version - https://h2o-release.s3.amazonaws.com/h2o/latest_stable.html.  
+        To circumvent this error message (not recommended), you can set strict_version_check=FALSE.",
         verH2O, toString(verPkg)))
       } else if (build_number_H2O =="unknown"){
         stop(sprintf("Version mismatch! H2O is running version %s but h2o-R package is version %s.
-        Upgrade H2O and R to latest stable version - https://h2o-release.s3.amazonaws.com/h2o/latest_stable.html",
+        Upgrade H2O and R to latest stable version - https://h2o-release.s3.amazonaws.com/h2o/latest_stable.html. 
+         To circumvent this error message (not recommended), you can set strict_version_check=FALSE.",
         verH2O, toString(verPkg)))
       } else if (build_number_H2O =="99999"){
         stop((sprintf("Version mismatch! H2O is running version %s but h2o-R package is version %s.
-        This is a developer build, please contact your developer",verH2O, toString(verPkg) )))
+        This is a developer build, please contact your developer.  To circumvent this error message (not recommended),
+         you can set strict_version_check=FALSE.",verH2O, toString(verPkg) )))
       } else {
          stop(sprintf("Version mismatch! H2O is running version %s but h2o-R package is version %s.
-         Install the matching h2o-R version from - https://h2o-release.s3.amazonaws.com/h2o/%s/%s/index.html",
+         Install the matching h2o-R version from - https://h2o-release.s3.amazonaws.com/h2o/%s/%s/index.html.  To 
+         circumvent this error message (not recommended), you can set strict_version_check=FALSE.",
          verH2O, toString(verPkg),branch_name_H2O,build_number_H2O))
       }
     }

h2o-r/tests/testdir_misc/runit_GH_6707_init_version_check.R

@@ -0,0 +1,23 @@
+setwd(normalizePath(dirname(
+  R.utils::commandArgs(asValues = TRUE)$"f"
+)))
+source("../../scripts/h2o-r-test-setup.R")
+
+h2o_init_test <- function() {
+  e <- tryCatch({
+    h2o.init(
+      strict_version_check = TRUE
+    )
+  }, error = function(x) x)
+
+  if (!is.null(e)) {
+    print(e)
+    err_message <- e[[1]]
+    if (!grepl("there is no package called ‘h2o’", err_message)) { # this error can occur for some reason.  Getting around it by using this check
+      expect_true(grepl("To circumvent this error message (not recommended), you can set strict_version_check=False", err_message))
+    }
+  }
+}
+
+doTest("Make sure connection version mismatch error contains new error message.",
+       h2o_init_test)