From e564eb341ff0b79d8ffeb89f6380538113ba2387 Mon Sep 17 00:00:00 2001
From: tangwei12 <tangwei12@baidu.com>
Date: Wed, 7 Nov 2018 13:28:13 +0800
Subject: [PATCH] Fix mkdir conflict in save_inference_model (#14285)

*  fix mkdir conflict

test=develop
---
 python/paddle/fluid/io.py | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/python/paddle/fluid/io.py b/python/paddle/fluid/io.py
index 22c60c1cbe4..8936d884dd9 100644
--- a/python/paddle/fluid/io.py
+++ b/python/paddle/fluid/io.py
@@ -65,7 +65,7 @@ def is_persistable(var):
     Examples:
         .. code-block:: python
 
-            param = fluid.default_main_program().global_block().var('fc.w')
+            param = fluid.default_main_program().global_block().var('fc.b')
             res = fluid.io.is_persistable(param)
     """
     if var.desc.type() == core.VarDesc.VarType.FEED_MINIBATCH or \
@@ -625,8 +625,13 @@ def save_inference_model(dirname,
                                       main_program._distributed_lookup_table,
                                       main_program._endpoints)
 
-    if not os.path.isdir(dirname):
+    # when a pserver and a trainer running on the same machine, mkdir may conflict
+    try:
         os.makedirs(dirname)
+    except OSError as e:
+        if e.errno != errno.EEXIST:
+            raise
+
     if model_filename is not None:
         model_basename = os.path.basename(model_filename)
     else:
-- 
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