Correct non closed log files problem

pipelet/environment.py

@@ -402,4 +402,6 @@ class Environment(EnvironmentBase):
         except:
             res = []
             self.logger.info("No segment output found, setting seg_output to None")
+        for h in self.logger.handlers:
+            h.close()
         return  res

pipelet/utils.py

@@ -252,7 +252,7 @@ def init_logger (name, filename, level=logging.DEBUG):
     
     logger = logging.getLogger(name)
     logger.setLevel(logging.DEBUG)
-    if (len(logger.handlers) < 4):
+    if (len(logger.handlers) < 2):
         formatter = logging.Formatter("%(asctime)s - %(name)s - %(levelname)s - %(message)s")
         if filename:
             rfhandler = logging.handlers.RotatingFileHandler(