[GitHub] eric-haibin-lin commented on a change in pull request #11181: [MXNET-525] Add retry logic to download functions to fix flaky tests

[GitBox <gi...@apache.org>]

eric-haibin-lin commented on a change in pull request #11181: [MXNET-525] Add retry logic to download functions to fix flaky tests
URL: https://github.com/apache/incubator-mxnet/pull/11181#discussion_r193616273
 
 

 ##########
 File path: python/mxnet/test_utils.py
 ##########
 @@ -1411,12 +1416,21 @@ def download(url, fname=None, dirname=None, overwrite=False):
         logging.info("%s exists, skipping download", fname)
         return fname
 
-    r = requests.get(url, stream=True)
-    assert r.status_code == 200, "failed to open %s" % url
-    with open(fname, 'wb') as f:
-        for chunk in r.iter_content(chunk_size=1024):
-            if chunk: # filter out keep-alive new chunks
-                f.write(chunk)
+    while (retries+1 > 0):
+        try:
+            r = requests.get(url, stream=True)
+            assert r.status_code == 200, "failed to open %s" % url
+            with open(fname, 'wb') as f:
+                for chunk in r.iter_content(chunk_size=1024):
+                    if chunk: # filter out keep-alive new chunks
+                        f.write(chunk)
+                break
+        except Exception as e:
+            retries -= 1
+            if (retries <= 0):
 
 Review comment:
   no need for parentheses in python. pls remove

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