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[Launchpad Bug Tracker <985787@xxxxxxxxxxxxxxxxxx>]

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With the Project App installed, in the Kanban view of Task, when moving
task between Stages sometimes I get the following error

Client Traceback (most recent call last):
  File "/home/openerp-damian/.addons/web/common/http.py", line 180, in dispatch
    response["result"] = method(controller, self, **self.params)
  File "/home/openerp-damian/.addons/web/controllers/main.py", line 971, in save
    r = m.write([id], data, req.session.eval_context(req.context))
  File "/home/openerp-damian/.addons/web/common/openerplib/main.py", line 250, in proxy
    args, kw)
  File "/home/openerp-damian/.addons/web/common/openerplib/main.py", line 117, in proxy
    result = self.connector.send(self.service_name, method, *args)
  File "/home/openerp-damian/.addons/web/common/http.py", line 611, in send
    raise fault


Server Traceback (most recent call last):
  File "/home/openerp-damian/.addons/web/common/http.py", line 592, in send
    result = openerp.netsvc.dispatch_rpc(service_name, method, args)
  File "/usr/lib/pymodules/python2.7/openerp/netsvc.py", line 360, in dispatch_rpc
    result = ExportService.getService(service_name).dispatch(method, params)
  File "/usr/lib/pymodules/python2.7/openerp/service/web_services.py", line 586, in dispatch
    res = fn(db, uid, *params)
  File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 167, in execute_kw
    return self.execute(db, uid, obj, method, *args, **kw or {})
  File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 121, in wrapper
    return f(self, dbname, *args, **kwargs)
  File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 176, in execute
    res = self.execute_cr(cr, uid, obj, method, *args, **kw)
  File "/usr/lib/pymodules/python2.7/openerp/osv/osv.py", line 164, in execute_cr
    return getattr(object, method)(cr, uid, *args, **kw)
  File "/home/openerp-damian/.addons/project/project.py", line 1050, in write
    result = super(task,self).write(cr, uid, ids, vals, context=context)
  File "/usr/lib/pymodules/python2.7/openerp/osv/orm.py", line 3917, in write
    'where id IN %s', upd1 + [sub_ids])
  File "/usr/lib/pymodules/python2.7/openerp/sql_db.py", line 152, in wrapper
    return f(self, *args, **kwargs)
  File "/usr/lib/pymodules/python2.7/openerp/sql_db.py", line 212, in execute
    res = self._obj.execute(query, params)
TransactionRollbackError: could not serialize access due to concurrent update

Maybe is because moving the task between stages faster than the update
is performed in the server.

** Affects: openobject-server
     Importance: Medium
     Assignee: OpenERP R&D Web Team (openerp-dev-web)
         Status: Confirmed

-- 
[6.1]Kanban view: "could not serialize access due to concurrent update"
https://bugs.launchpad.net/bugs/985787
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