diff --git a/apps/PGLBox/src/cluster_train_and_infer.py b/apps/PGLBox/src/cluster_train_and_infer.py
index d2caf2f9..458393f6 100644
--- a/apps/PGLBox/src/cluster_train_and_infer.py
+++ b/apps/PGLBox/src/cluster_train_and_infer.py
@@ -21,17 +21,14 @@
 import sys
 import time
 import glob
-import yaml
 import shutil
 import argparse
 import traceback
 import pickle as pkl
 import numpy as np
 import helper
-from datetime import datetime
 
 import paddle
-import paddle.fluid as fluid
 import paddle.static as static
 from place import get_cuda_places
 from pgl.utils.logger import log
@@ -61,7 +58,7 @@ def train(args, exe, model_dict, dataset):
 
         epoch_loss = 0
         train_pass_num = 0
-        for pass_dataset in dataset.pass_generator():
+        for pass_dataset in dataset.pass_generator(epoch):
             exe.train_from_dataset(
                 model_dict.train_program, pass_dataset, debug=False)
 
@@ -161,7 +158,7 @@ def train_with_multi_metapath(args, exe, model_dict, dataset):
         fleet.barrier_worker()
         savemodel_end = time.time()
         log.info("STAGE [SAVE MODEL] for epoch [%d] finished, time cost: %f sec" \
-            % (epoch + 1, savemodel_end - savemodel_begin))
+            % (epoch, savemodel_end - savemodel_begin))
 
     train_end_time = time.time()
     log.info("STAGE [TRAIN MODEL] finished, time cost: % sec" %
@@ -216,7 +213,7 @@ def run_worker(args, exe, model_dict, infer_model_dict):
 
     dist_graph.load_edge()
     ret = dist_graph.load_node()
-    if ret is not 0:
+    if ret != 0:
         return -1
 
     if args.warm_start_from:
@@ -260,6 +257,13 @@ def run_worker(args, exe, model_dict, infer_model_dict):
         log.info("STAGE: need_inference is %s, skip inference process" %
                  args.need_inference)
 
+    if args.need_dump_walk is True:
+        upload_dump_begin = time.time()
+        util.upload_dump_walk(args, args.local_dump_path)
+        upload_dump_end = time.time()
+        log.info("STAGE [UPLOAD DUMP WALK] finished, time cost: %f sec" %
+                 (upload_dump_end - upload_dump_begin))
+
     return 0
 
 
@@ -314,7 +318,7 @@ def main(args):
 
     elif fleet.is_worker():
         ret = run_worker(args, exe, model_dict, infer_model_dict)
-        if ret is not 0:
+        if ret != 0:
             fleet.stop_worker()
             return -1
 
@@ -333,6 +337,7 @@ def main(args):
     config.local_result_path = "./embedding"
     config.model_save_path = os.path.join(config.working_root, "model")
     config.infer_result_path = os.path.join(config.working_root, 'embedding')
+    config.dump_save_path = os.path.join(config.working_root, 'dump_walk')
     config.max_steps = config.max_steps if config.max_steps else 0
     config.metapath_split_opt = config.metapath_split_opt if config.metapath_split_opt else False
     print("#===================PRETTY CONFIG============================#")
diff --git a/apps/PGLBox/src/dataset.py b/apps/PGLBox/src/dataset.py
index 1ab17b73..70da8df8 100644
--- a/apps/PGLBox/src/dataset.py
+++ b/apps/PGLBox/src/dataset.py
@@ -14,14 +14,17 @@
 
 import os
 import time
-import paddle
 import threading
+
+import paddle
 from paddle.distributed import fleet
-import util
 import paddle.fluid as fluid
-from place import get_cuda_places
 from pgl.utils.logger import log
 
+import util
+from place import get_cuda_places
+import models.model_util as model_util
+
 
 class BaseDataset(object):
     def __init__(self,
@@ -221,14 +224,13 @@ def __init__(self,
             dist_graph=dist_graph,
             is_predict=False)
 
-    def pass_generator(self):
+    def pass_generator(self, epoch=None):
         # open a thread for processing the data
         dataset_list = []
         t = threading.Thread(target=self.preload_thread, args=(dataset_list, ))
         t.setDaemon(True)
         t.start()
 
-        epoch_loss = 0
         pass_id = 0
         while 1:
             self.ins_ready_sem.acquire()
diff --git a/apps/PGLBox/src/graph.py b/apps/PGLBox/src/graph.py
index af5a54d8..133ec528 100644
--- a/apps/PGLBox/src/graph.py
+++ b/apps/PGLBox/src/graph.py
@@ -116,7 +116,8 @@ def load_edge(self):
         if not self.metapath_split_opt:
             load_begin_time = time.time()
             for i in range(len(self.etype_list)):
-                log.info("begin to upload edge_type: [%s] to GPU" % self.etype_list[i])
+                log.info("begin to upload edge_type: [%s] to GPU" %
+                         self.etype_list[i])
                 self.graph.upload_batch(0, i,
                                         len(get_cuda_places()),
                                         self.etype_list[i])
@@ -138,7 +139,7 @@ def load_node(self):
         ret = self.graph.load_node_file(self.node_types, self.root_dir,
                                         self.num_parts)
 
-        if ret is not 0:
+        if ret != 0:
             log.info("Fail to load node, ntype2files[%s] path[%s] num_part[%d]" \
                      % (self.node_types, self.root_dir, self.num_parts))
             self.graph.release_graph_node()
diff --git a/apps/PGLBox/src/hadoop.py b/apps/PGLBox/src/hadoop.py
index 7f785d84..a1d44006 100644
--- a/apps/PGLBox/src/hadoop.py
+++ b/apps/PGLBox/src/hadoop.py
@@ -193,3 +193,22 @@ def put(src, dest, hadoop_bin=None, fs_name=None, fs_ugi=None):
     cmd += " 2>%s" % ERR_LOG
     ret = os.system(cmd)
     return ret
+
+
+def replace(src, dest, hadoop_bin=None, fs_name=None, fs_ugi=None):
+    """hadoop replace"""
+    hadoop_bin, fs_name, fs_ugi = parse_account(hadoop_bin, fs_name, fs_ugi)
+    src = check_hadoop_path(src, fs_name, fs_ugi)
+    dest = check_hadoop_path(dest, fs_name, fs_ugi)
+
+    tmp = dest + "_" + str(int(time.time()))
+    cmd = make_base_cmd(hadoop_bin, fs_name, fs_ugi)
+    cmd += " -mv " + dest + " " + tmp + " && "
+
+    cmd += make_base_cmd(hadoop_bin, fs_name, fs_ugi)
+    cmd += " -put " + src + " " + dest + " && "
+
+    cmd += make_base_cmd(hadoop_bin, fs_name, fs_ugi)
+    cmd += " -rmr " + tmp
+    ret = os.system(cmd)
+    return ret
diff --git a/apps/PGLBox/src/models/model_util.py b/apps/PGLBox/src/models/model_util.py
index f62daab6..e67edc08 100644
--- a/apps/PGLBox/src/models/model_util.py
+++ b/apps/PGLBox/src/models/model_util.py
@@ -283,7 +283,7 @@ def get_sparse_embedding(config,
             use_cvm=use_cvm)
         for bow in slot_bows:
             slot_embedding = bow[:, 1:]
-            slot_embedding = paddle.nn.softsign(slot_embedding)
+            slot_embedding = paddle.nn.functional.softsign(slot_embedding)
             slot_embedding_list.append(slot_embedding)
 
     return id_embedding, slot_embedding_list
diff --git a/apps/PGLBox/src/util.py b/apps/PGLBox/src/util.py
index 1cb94f0f..56bcbdd9 100644
--- a/apps/PGLBox/src/util.py
+++ b/apps/PGLBox/src/util.py
@@ -47,6 +47,13 @@ def get_global_value(value_sum, value_cnt):
     return value_sum / np.maximum(value_cnt, 1)
 
 
+def get_batch_num(value_cnt):
+    """ get global value """
+    value_cnt = np.array(fluid.global_scope().find_var(value_cnt.name)
+                         .get_tensor())
+    return value_cnt
+
+
 def parse_path(path):
     """
     Args:
@@ -264,6 +271,32 @@ def upload_embedding(args, local_embed_path):
         log.info("embedding has been saved in local path: %s" % working_root)
 
 
+def upload_dump_walk(args, local_dump_path):
+    mode, dump_save_path = parse_path(args.dump_save_path)
+    _, working_root = parse_path(args.working_root)
+    if mode == "hdfs":
+        HFS.rm(dump_save_path)
+        HFS.mkdir(dump_save_path)
+
+        log.info("being to upload walk_path to: %s " % dump_save_path)
+        for file in glob.glob(os.path.join(local_dump_path, "*")):
+            basename = os.path.basename(file)
+            HFS.put(file, dump_save_path)
+        log.info("[hadoop put] walk_path has been upload to: %s " %
+                 dump_save_path)
+    elif mode == "afs":
+        log.info("being to upload walk_path to: %s " % dump_save_path)
+        # HFS.rm(dump_save_path)
+        user, passwd = args.fs_ugi.split(',')
+        gzshell_upload(args.fs_name, user, passwd, local_dump_path,
+                       "afs:%s" % working_root)
+        log.info("[gzshell] walk_path has been upload to: %s" % dump_save_path)
+    else:
+        make_dir(working_root)
+        run_cmd("mv %s %s" % (local_dump_path, working_root))
+        log.info("walk_path has been saved in local path: %s" % working_root)
+
+
 def hadoop_touch_done(path):
     """ touch hadoop done """
     if fleet.worker_index() == 0:
diff --git a/apps/PGLBox/user_configs/lightgcn.yaml b/apps/PGLBox/user_configs/lightgcn.yaml
index c08ed9ae..cc305b6f 100644
--- a/apps/PGLBox/user_configs/lightgcn.yaml
+++ b/apps/PGLBox/user_configs/lightgcn.yaml
@@ -91,6 +91,8 @@ need_inference: True
 # 预估embedding的时候，需要的参数，保持默认即可.
 dump_node_name: "src_node___id"
 dump_node_emb_name: "src_node___emb"
+# 是否需要dump游走路径
+need_dump_walk: False
 
 # ---------------------------train param config---------------------------------------------#
 epochs: 1
diff --git a/apps/PGLBox/user_configs/metapath.yaml b/apps/PGLBox/user_configs/metapath.yaml
index 446d3118..69c3dc0a 100644
--- a/apps/PGLBox/user_configs/metapath.yaml
+++ b/apps/PGLBox/user_configs/metapath.yaml
@@ -82,6 +82,8 @@ need_inference: True
 # 预估embedding的时候，需要的参数，保持默认即可.
 dump_node_name: "src_node___id"
 dump_node_emb_name: "src_node___emb"
+# 是否需要dump游走路径
+need_dump_walk: False
 
 # ---------------------------train param config---------------------------------------------#
 epochs: 1