diff --git a/src/master/httprest.py b/src/master/httprest.py
index abbdb10..d71c974 100755
--- a/src/master/httprest.py
+++ b/src/master/httprest.py
@@ -808,12 +808,12 @@ def add_job(user,beans,form):
         key_arr = key.split('_')
         value = job_data[key]
         if key_arr[0] == 'srcAddr' and value == '':
-            task_idx = 'task_' + key_arr[1]
+            #task_idx = 'task_' + key_arr[1]
             if task_idx in job_info['tasks']:
-                job_info['tasks'][task_idx]['srcAddr'] = '/root/nfs'
+                job_info['tasks'][task_idx]['srcAddr'] = '/root'
             else:
                 job_info['tasks'][task_idx] = {
-                    'srcAddr': '/root/nfs/'
+                    'srcAddr': '/root'
                 }
         elif key_arr[0] != 'dependency'and value == '':
             message['success'] = 'false'
@@ -822,7 +822,7 @@ def add_job(user,beans,form):
             job_info[key_arr[0]] = value
         elif len(key_arr) == 2:
             key_prefix, task_idx = key_arr[0], key_arr[1]
-            task_idx = 'task_' + task_idx
+            #task_idx = 'task_' + task_idx
             if task_idx in job_info["tasks"]:
                 job_info["tasks"][task_idx][key_prefix] = value
             else:
@@ -832,7 +832,7 @@ def add_job(user,beans,form):
                 job_info["tasks"][task_idx] = tmp_dict
         elif len(key_arr) == 3:
             key_prefix, task_idx, mapping_idx = key_arr[0], key_arr[1], key_arr[2]
-            task_idx = 'task_' + task_idx
+            #task_idx = 'task_' + task_idx
             mapping_idx = 'mapping_' + mapping_idx
             if task_idx in job_info["tasks"]:
                 if "mapping" in job_info["tasks"][task_idx]:
@@ -1103,6 +1103,5 @@ if __name__ == '__main__':
     G_jobmgr = jobmgr.JobMgr(G_taskmgr)
     G_taskmgr.set_jobmgr(G_jobmgr)
     G_taskmgr.start()
-    G_jobmgr.start()
 
     app.run(host = masterip, port = masterport, threaded=True)
diff --git a/src/master/jobmgr.py b/src/master/jobmgr.py
index 5eb573d..7962223 100644
--- a/src/master/jobmgr.py
+++ b/src/master/jobmgr.py
@@ -1,6 +1,7 @@
 import time, threading, random, string, os, traceback
 import master.monitor
-import subprocess
+import subprocess,json
+from functools import wraps
 
 from utils.log import initlogging, logger
 from utils import env
@@ -9,103 +10,194 @@ class BatchJob(object):
     def __init__(self, user, job_info):
         self.user = user
         self.raw_job_info = job_info
-        self.task_queue = []
-        self.task_finished = []
         self.job_id = None
         self.job_name = job_info['jobName']
         self.job_priority = int(job_info['jobPriority'])
         self.status = 'pending'
         self.create_time = time.strftime('%Y-%m-%d %H:%M:%S',time.localtime())
-        self.top_sort()
+        self.lock = threading.Lock()
+        self.tasks = {}
+        self.dependency_out = {}
+        self.tasks_cnt = {'pending':0, 'scheduling':0, 'running':0, 'retrying':0, 'failed':0, 'finished':0}
 
-    # transfer the dependency graph into a job queue
-    def top_sort(self):
-        logger.debug('top sorting')
-        tasks = self.raw_job_info["tasks"]
-        dependency_graph = {}
-        for task_idx in tasks:
-            dependency_graph[task_idx] = set()
-            task_info = tasks[task_idx]
+        #init self.tasks & self.dependency_out & self.tasks_cnt
+        logger.debug("Init BatchJob user:%s job_name:%s create_time:%s" % (self.user, self.job_name, self.create_time))
+        raw_tasks = self.raw_job_info["tasks"]
+        self.tasks_cnt['pending'] = len(raw_tasks.keys())
+        for task_idx in raw_tasks.keys():
+            task_info = raw_tasks[task_idx]
+            self.tasks[task_idx] = {}
+            self.tasks[task_idx]['config'] = task_info
+            self.tasks[task_idx]['status'] = 'pending'
+            self.tasks[task_idx]['dependency'] = []
             dependency = task_info['dependency'].strip().replace(' ', '').split(',')
             if len(dependency) == 1 and dependency[0] == '':
                 continue
-            for t in dependency:
-                if not t in tasks:
-                    raise ValueError('task %s is not defined in the dependency of task %s' % (t, task_idx))
-                dependency_graph[task_idx].add(t)
-        while len(dependency_graph) > 0:
-            s = set()
-            flag = False
-            for task_idx in dependency_graph:
-                if len(dependency_graph[task_idx]) == 0:
-                    flag = True
-                    s.add(task_idx)
-            for task_idx in s:
-                dependency_graph.pop(task_idx)
-            #there is a circle in the graph
-            if not flag:
-                raise ValueError('there is a circle in the dependency graph')
-                break
-            for task_idx in dependency_graph:
-                for t in s:
-                    if t in dependency_graph[task_idx]:
-                        dependency_graph[task_idx].remove(t)
-            self.task_queue.append({
-                'task_idx': s,
-                'status': 'pending'
-            })
+            for d in dependency:
+                if not d in raw_tasks.keys():
+                    raise ValueError('task %s is not defined in the dependency of task %s' % (d, task_idx))
+                self.tasks[task_idx]['dependency'].append(d)
+                if not d in self.dependency_out.keys():
+                    self.dependency_out[d] = []
+                self.dependency_out[d].append(task_idx)
 
-    # get a task and pass it to taskmgr
-    def get_task(self):
-        for task in self.task_queue:
-            if task['status'] == 'pending':
-                task_idx = task['task_idx'].pop()
-                task['status'] = 'running'
+        self.log_status()
+        logger.debug("BatchJob(id:%s) dependency_out: %s" % (self.job_id, json.dumps(self.dependency_out, indent=3)))
+
+    def data_lock(f):
+        @wraps(f)
+        def new_f(self, *args, **kwargs):
+            self.lock.acquire()
+            try:
+                result = f(self, *args, **kwargs)
+            except Exception as err:
+                self.lock.release()
+                raise err
+            self.lock.release()
+            return result
+        return new_f
+
+    # return the tasks without dependencies
+    @data_lock
+    def get_tasks_no_dependency(self,update_status=False):
+        logger.debug("Get tasks without dependencies of BatchJob(id:%s)" % self.job_id)
+        ret_tasks = []
+        for task_idx in self.tasks.keys():
+            if (self.tasks[task_idx]['status'] == 'pending' and
+                len(self.tasks[task_idx]['dependency']) == 0):
+                if update_status:
+                    self.tasks_cnt['pending'] -= 1
+                    self.tasks_cnt['scheduling'] += 1
+                    self.tasks[task_idx]['status'] = 'scheduling'
                 task_name = self.user + '_' + self.job_id + '_' + task_idx
-                return task_name, self.raw_job_info["tasks"][task_idx]
-        return '', None
+                ret_tasks.append([task_name, self.tasks[task_idx]['config'], self.job_priority])
+        self.log_status()
+        return ret_tasks
 
-    # a task has finished
+    # update status of this job based
+    def _update_job_status(self):
+        allcnt = len(self.tasks.keys())
+        if self.tasks_cnt['failed'] != 0:
+            self.status = 'failed'
+        elif self.tasks_cnt['running'] != 0:
+            self.status = 'running'
+        elif self.tasks_cnt['finished'] == allcnt:
+            self.status = 'done'
+        else:
+            self.status = 'pending'
+
+    # start run a task, update status
+    @data_lock
+    def update_task_running(self, task_idx):
+        logger.debug("Update status of task(idx:%s) of BatchJob(id:%s) running." % (task_idx, self.job_id))
+        old_status = self.tasks[task_idx]['status'].split('(')[0]
+        self.tasks_cnt[old_status] -= 1
+        self.tasks[task_idx]['status'] = 'running'
+        self.tasks_cnt['running'] += 1
+        self._update_job_status()
+        self.log_status()
+
+    # a task has finished, update dependency and return tasks without dependencies
+    @data_lock
     def finish_task(self, task_idx):
-        pass
+        if task_idx not in self.tasks.keys():
+            logger.error('Task_idx %s not in job. user:%s job_name:%s job_id:%s'%(task_idx, self.user, self.job_name, self.job_id))
+            return []
+        logger.debug("Task(idx:%s) of BatchJob(id:%s) has finished. Update dependency..." % (task_idx, self.job_id))
+        old_status = self.tasks[task_idx]['status'].split('(')[0]
+        self.tasks_cnt[old_status] -= 1
+        self.tasks[task_idx]['status'] = 'finished'
+        self.tasks_cnt['finished'] += 1
+        self._update_job_status()
+        if task_idx not in self.dependency_out.keys():
+            self.log_status()
+            return []
+        ret_tasks = []
+        for out_idx in self.dependency_out[task_idx]:
+            try:
+                self.tasks[out_idx]['dependency'].remove(task_idx)
+            except Exception as err:
+                logger.warning(traceback.format_exc())
+                continue
+            if (self.tasks[out_idx]['status'] == 'pending' and
+                len(self.tasks[out_idx]['dependency']) == 0):
+                self.tasks_cnt['pending'] -= 1
+                self.tasks_cnt['scheduling'] += 1
+                self.tasks[out_idx]['status'] = 'scheduling'
+                task_name = self.user + '_' + self.job_id + '_' + out_idx
+                ret_tasks.append([task_name, self.tasks[out_idx]['config'], self.job_priority])
+        self.log_status()
+        return ret_tasks
 
-class JobMgr(threading.Thread):
+    # update retrying status of task
+    @data_lock
+    def update_task_retrying(self, task_idx, reason, tried_times):
+        logger.debug("Update status of task(idx:%s) of BatchJob(id:%s) retrying. reason:%s tried_times:%d" % (task_idx, self.job_id, reason, int(tried_times)))
+        old_status = self.tasks[task_idx]['status'].split('(')[0]
+        self.tasks_cnt[old_status] -= 1
+        self.tasks_cnt['retrying'] += 1
+        self.tasks[task_idx]['status'] = 'retrying(%s)(%d times)' % (reason, int(tried_times))
+        self._update_job_status()
+        self.log_status()
+
+    # update failed status of task
+    @data_lock
+    def update_task_failed(self, task_idx, reason, tried_times):
+        logger.debug("Update status of task(idx:%s) of BatchJob(id:%s) failed. reason:%s tried_times:%d" % (task_idx, self.job_id, reason, int(tried_times)))
+        old_status = self.tasks[task_idx]['status'].split('(')[0]
+        self.tasks_cnt[old_status] -= 1
+        self.tasks_cnt['failed'] += 1
+        if reason == "OUTPUTERROR":
+            self.tasks[task_idx]['status'] = 'failed(OUTPUTERROR)'
+        else:
+            self.tasks[task_idx]['status'] = 'failed(%s)(%d times)' % (reason, int(tried_times))
+        self._update_job_status()
+        self.log_status()
+
+    # print status for debuging
+    def log_status(self):
+        task_copy = {}
+        for task_idx in self.tasks.keys():
+            task_copy[task_idx] = {}
+            task_copy[task_idx]['status'] = self.tasks[task_idx]['status']
+            task_copy[task_idx]['dependency'] = self.tasks[task_idx]['dependency']
+        logger.debug("BatchJob(id:%s) tasks status: %s" % (self.job_id, json.dumps(task_copy, indent=3)))
+        logger.debug("BatchJob(id:%s)  tasks_cnt: %s" % (self.job_id, self.tasks_cnt))
+        logger.debug("BatchJob(id:%s)  job_status: %s" %(self.job_id, self.status))
+
+
+class JobMgr():
     # load job information from etcd
     # initial a job queue and job schedueler
     def __init__(self, taskmgr):
-        threading.Thread.__init__(self)
         self.job_queue = []
         self.job_map = {}
         self.taskmgr = taskmgr
         self.fspath = env.getenv('FS_PREFIX')
 
-    def run(self):
-        while True:
-            self.job_scheduler()
-            time.sleep(2)
-
     # user: username
-    # job_data: a json string
+    # job_info: a json string
     # user submit a new job, add this job to queue and database
     def add_job(self, user, job_info):
         try:
             job = BatchJob(user, job_info)
             job.job_id = self.gen_jobid()
-            self.job_queue.append(job.job_id)
             self.job_map[job.job_id] = job
+            self.process_job(job)
         except ValueError as err:
             logger.error(err)
             return [False, err.args[0]]
         except Exception as err:
+            logger.error(traceback.format_exc())
+            #logger.error(err)
             return [False, err.args[0]]
-        finally:
-            return [True, "add batch job success"]
+        return [True, "add batch job success"]
 
     # user: username
     # list a user's all job
     def list_jobs(self,user):
         res = []
-        for job_id in self.job_queue:
+        for job_id in self.job_map.keys():
             job = self.job_map[job_id]
             logger.debug('job_id: %s, user: %s' % (job_id, job.user))
             if job.user == user:
@@ -132,7 +224,7 @@ class JobMgr(threading.Thread):
 
     # check if a job exists
     def is_job_exist(self, job_id):
-        return job_id in self.job_queue
+        return job_id in self.job_map.keys()
 
     # generate a random job id
     def gen_jobid(self):
@@ -141,31 +233,47 @@ class JobMgr(threading.Thread):
             job_id = ''.join(random.sample(string.ascii_letters + string.digits, 8))
         return job_id
 
-    # this is a thread to process a job
-    def job_processor(self, job):
-        task_name, task_info = job.get_task()
-        if not task_info:
-            return False
-        else:
-            task_priority = job.job_priority
-            self.taskmgr.add_task(job.user, task_name, task_info, task_priority)
-            return True
-
-    # this is a thread to schedule the jobs
-    def job_scheduler(self):
-        # choose a job from queue, create a job processor for it
-        for job_id in self.job_queue:
-            job = self.job_map[job_id]
-            if self.job_processor(job):
-                job.status = 'running'
-                break
+    # add tasks into taskmgr's queue
+    def add_task_taskmgr(self, user, tasks):
+        for task_name, task_info, task_priority in tasks:
+            if not task_info:
+                logger.error("task_info does not exist! task_name(%s)" % task_name)
+                return False
             else:
-                job.status = 'done'
+                logger.debug("Add task(name:%s) with priority(%s) to taskmgr's queue." % (task_name, task_priority) )
+                self.taskmgr.add_task(user, task_name, task_info, task_priority)
+        return True
 
-    # a task has finished
-    def report(self, task):
-        pass
+    # to process a job, add tasks without dependencies of the job into taskmgr
+    def process_job(self, job):
+        tasks = job.get_tasks_no_dependency(True)
+        return self.add_task_taskmgr(job.user, tasks)
 
+    # report task status from taskmgr when running, failed and finished
+    # task_name: user + '_' + job_id + '_' + task_idx
+    # status: 'running', 'finished', 'retrying', 'failed'
+    # reason: reason for failure or retrying, such as "FAILED", "TIMEOUT", "OUTPUTERROR"
+    # tried_times: how many times the task has been tried.
+    def report(self, task_name, status, reason="", tried_times=1):
+        split_task_name = task_name.split('_')
+        if len(split_task_name) != 3:
+            logger.error("Illegal task_name(%s) report from taskmgr" % task_name)
+            return
+        user, job_id, task_idx = split_task_name
+        job  = self.job_map[job_id]
+        if status == "running":
+            job.update_task_running(task_idx)
+        elif status == "finished":
+            next_tasks = job.finish_task(task_idx)
+            if len(next_tasks) == 0:
+                return
+            ret = self.add_task_taskmgr(user, next_tasks)
+        elif status == "retrying":
+            job.update_task_retrying(task_idx, reason, tried_times)
+        elif status == "failed":
+            job.update_task_failed(task_idx, reason, tried_times)
+
+    # Get Batch job stdout or stderr from its file
     def get_output(self, username, jobid, taskid, instid, issue):
         filename = username + "_" + jobid + "_" + taskid + "_" + instid + "_" + issue + ".txt"
         fpath = "%s/global/users/%s/data/batch_%s/%s" % (self.fspath,username,jobid,filename)
diff --git a/src/master/taskmgr.py b/src/master/taskmgr.py
index 07936d8..91aa3e0 100644
--- a/src/master/taskmgr.py
+++ b/src/master/taskmgr.py
@@ -139,20 +139,26 @@ class TaskMgr(threading.Thread):
         elif report.instanceStatus == FAILED or report.instanceStatus == TIMEOUT:
             if instance['try_count'] > task.info.maxRetryCount:
                 self.check_task_completed(task)
+            else:
+                reason = 'FAILED' if report.instanceStatus == FAILED else 'TIMEOUT'
+                self.task_retrying(task, reason, instance['try_count'])
         elif report.instanceStatus == OUTPUTERROR:
-            self.task_failed(task)
+            self.task_failed(task,"OUTPUTERROR")
 
 
     def check_task_completed(self, task):
         if len(task.instance_list) < task.info.instanceCount:
             return
         failed = False
+        reason = "FAILED"
         for instance in task.instance_list:
             if instance['status'] == RUNNING or instance['status'] == WAITING:
                 return
             if instance['status'] == FAILED or instance['status'] == TIMEOUT:
                 if instance['try_count'] > task.info.maxRetryCount:
                     failed = True
+                    if instance['status'] == TIMEOUT:
+                        reason = "TIMEOUT"
                 else:
                     return
             if instance['status'] == OUTPUTERROR:
@@ -160,7 +166,7 @@ class TaskMgr(threading.Thread):
                 break
 
         if failed:
-            self.task_failed(task)
+            self.task_failed(task,reason)
         else:
             self.task_completed(task)
 
@@ -171,21 +177,27 @@ class TaskMgr(threading.Thread):
         if self.jobmgr is None:
             self.logger.error('[task_completed] jobmgr is None!')
         else:
-            self.jobmgr.report(task)
+            self.jobmgr.report(task.info.id,'finished')
         self.logger.info('task %s completed' % task.info.id)
         self.lazy_delete_list.append(task)
 
 
-    def task_failed(self, task):
+    def task_failed(self, task, reason):
         task.status = FAILED
 
         if self.jobmgr is None:
             self.logger.error('[task_failed] jobmgr is None!')
         else:
-            self.jobmgr.report(task)
+            self.jobmgr.report(task.info.id,'failed', reason, task.info.maxRetryCount+1)
         self.logger.info('task %s failed' % task.info.id)
         self.lazy_delete_list.append(task)
 
+    def task_retrying(self, task, reason, tried_times):
+        if self.jobmgr is None:
+            self.logger.error('[task_retrying] jobmgr is None!')
+        else:
+            self.jobmgr.report(task.info.id,'retrying',reason,tried_times)
+
 
     @queue_lock
     def sort_out_task_queue(self):
@@ -201,6 +213,7 @@ class TaskMgr(threading.Thread):
 
     def task_processor(self, task, instance_id, worker_ip):
         task.status = RUNNING
+        self.jobmgr.report(task.info.id,'running')
 
         # properties for transaction
         task.info.instanceid = instance_id
diff --git a/src/master/testTaskCtrler.py b/src/master/testTaskCtrler.py
index ba6b947..5427183 100644
--- a/src/master/testTaskCtrler.py
+++ b/src/master/testTaskCtrler.py
@@ -5,20 +5,21 @@ if sys.path[0].endswith("master"):
 import grpc,time
 
 from protos import rpc_pb2, rpc_pb2_grpc
+import random, string
 
 def run():
     channel = grpc.insecure_channel('localhost:50051')
     stub = rpc_pb2_grpc.WorkerStub(channel)
 
-    comm = rpc_pb2.Command(commandLine="ls /root/oss/test-for-docklet", packagePath="/root", envVars={'test1':'10','test2':'20'}) # | awk '{print \"test\\\"\\n\"}'
-    paras = rpc_pb2.Parameters(command=comm, stderrRedirectPath="/root/oss/test-for-docklet/", stdoutRedirectPath="/root/oss/test-for-docklet/")
+    comm = rpc_pb2.Command(commandLine="ls /root;sleep 5;ls /root", packagePath="/root", envVars={'test1':'10','test2':'20'}) # | awk '{print \"test\\\"\\n\"}'
+    paras = rpc_pb2.Parameters(command=comm, stderrRedirectPath="/root/nfs/batch_{jobid}/", stdoutRedirectPath="/root/nfs/batch_{jobid}/")
 
     img = rpc_pb2.Image(name="base", type=rpc_pb2.Image.BASE, owner="docklet")
     inst = rpc_pb2.Instance(cpu=1, memory=1000, disk=1000, gpu=0)
     mnt = rpc_pb2.Mount(localPath="",provider='aliyun',remotePath="test-for-docklet",other="oss-cn-beijing.aliyuncs.com",accessKey="LTAIdl7gmmIhfqA9",secretKey="")
-    clu = rpc_pb2.Cluster(image=img, instance=inst, mount=[mnt])
+    clu = rpc_pb2.Cluster(image=img, instance=inst, mount=[])
 
-    task = rpc_pb2.TaskInfo(id="test",username="root",instanceid=1,instanceCount=1,maxRetryCount=1,parameters=paras,cluster=clu,timeout=60000,token="test")
+    task = rpc_pb2.TaskInfo(id="test",username="root",instanceid=1,instanceCount=1,maxRetryCount=1,parameters=paras,cluster=clu,timeout=60000,token=''.join(random.sample(string.ascii_letters + string.digits, 8)))
 
     response = stub.process_task(task)
     print("Batch client received: " + str(response.status)+" "+response.message)
@@ -34,6 +35,7 @@ def stop_task():
     print("Batch client received: " + str(response.status)+" "+response.message)
 
 if __name__ == '__main__':
+    #for i in range(10):
     run()
     #time.sleep(4)
     #stop_task()
diff --git a/web/templates/batch/batch_create.html b/web/templates/batch/batch_create.html
index 532a1d1..bd9fa71 100644
--- a/web/templates/batch/batch_create.html
+++ b/web/templates/batch/batch_create.html
@@ -177,7 +177,7 @@
              +'<div class="col-sm-3"><input type="text" class="form-control" placeholder="/path/to/file or /path/" name="stdOutRedPth_' + task_number + '" id="stdOutRedPth_' + task_number + '" value="/root/nfs/batch_{jobid}/" />'
              +'</div></div>'
              +'<div class="form-group">'
-             +'<label class="col-sm-2 control-label">Dependency&nbsp<i class="fa fa-question-circle" title="The tasks that this task depends on, seperate them with commas, eg: task_1, task_2"></i></label>'
+             +'<label class="col-sm-2 control-label">Dependency&nbsp<i class="fa fa-question-circle" title="The tasks ids that this task depends on, seperate them with commas, eg: 1, 2"></i></label>'
              +'<div class="col-sm-3"><input type="text" class="form-control" name="dependency_' + task_number + '" id="dependency_' + task_number + '"  />'
              +'</div>'
              +'<label class="col-sm-2 control-label">Command</label>'