marcoabreu commented on a change in pull request #11383: [MXNET-565]change wget 
into java download
URL: https://github.com/apache/incubator-mxnet/pull/11383#discussion_r197851003
 
 

 ##########
 File path: 
scala-package/examples/src/test/scala/org/apache/mxnetexamples/infer/imageclassifier/ImageClassifierExampleSuite.scala
 ##########
 @@ -38,18 +40,30 @@ class ImageClassifierExampleSuite extends FunSuite with 
BeforeAndAfterAll {
     val tempDirPath = System.getProperty("java.io.tmpdir")
     logger.info("tempDirPath: %s".format(tempDirPath))
 
-    Process("wget https://s3.us-east-2.amazonaws.com/scala-infer-models"; +
-      "/resnet-18/resnet-18-symbol.json " + "-P " + tempDirPath + "/resnet18/ 
-q") !
+    val baseUrl = "https://s3.us-east-2.amazonaws.com/scala-infer-models";
 
-    Process("wget https://s3.us-east-2.amazonaws.com/scala-infer-models";
-      + "/resnet-18/resnet-18-0000.params " + "-P " + tempDirPath + 
"/resnet18/ -q") !
-
-    Process("wget https://s3.us-east-2.amazonaws.com/scala-infer-models"; +
-      "/resnet-18/synset.txt -P " + tempDirPath + "/resnet18/ -q") !
-
-    Process("wget " +
-      "https://s3.amazonaws.com/model-server/inputs/Pug-Cookie.jpg " +
-      "-P " + tempDirPath + "/inputImages/") !
+    var tmpFile = new File(tempDirPath + "/resnet18/resnet-18-symbol.json")
+    if (!tmpFile.exists()) {
 
 Review comment:
   In the past, we had problems with corrupt files being downloaded, so this 
check could cause problems. What do you think about moving this into a helper 
function which has this logic as well as hash-validation? 

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