[GitHub] piiswrong closed pull request #9126: fix multi worker dataloader deadlock

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

piiswrong closed pull request #9126: fix multi worker dataloader deadlock
URL: https://github.com/apache/incubator-mxnet/pull/9126
 
 
   

This is a PR merged from a forked repository.
As GitHub hides the original diff on merge, it is displayed below for
the sake of provenance:

As this is a foreign pull request (from a fork), the diff is supplied
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diff --git a/python/mxnet/gluon/data/dataloader.py b/python/mxnet/gluon/data/dataloader.py
index 8dea59fae9..02aa5c0414 100644
--- a/python/mxnet/gluon/data/dataloader.py
+++ b/python/mxnet/gluon/data/dataloader.py
@@ -216,10 +216,11 @@ def __iter__(self):
 
         for idx, batch in enumerate(self._batch_sampler):
             key_queue.put((idx, batch))
+        num_batches = idx + 1
 
         data_buffer = {}
         curr_idx = 0
-        for _ in range(len(self._batch_sampler)):
+        for _ in range(num_batches):
             idx, batch = data_queue.get()
             data_buffer[idx] = batch
             while curr_idx in data_buffer:


 

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