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-rw-r--r--tensorflow/python/training/sync_replicas_optimizer_test.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/tensorflow/python/training/sync_replicas_optimizer_test.py b/tensorflow/python/training/sync_replicas_optimizer_test.py
index 32cae70460..15f938df8c 100644
--- a/tensorflow/python/training/sync_replicas_optimizer_test.py
+++ b/tensorflow/python/training/sync_replicas_optimizer_test.py
@@ -267,6 +267,7 @@ class SyncReplicasOptimizerTest(test.TestCase):
# Starts worker 1.
thread_1.start()
thread_1.join()
+ thread_0.join()
# The global step should now be 2 and the gradients should have been
# applied again.