class_docstr: A monitor process for monitoring worker log files.
docstr: Close open file
docstr_tok: ["Close","open","file"]
code: def close_log_file(self):
      """Close open file"""
      if self.log_fd:
          self.log_fd.close()
  
file_path: BigDL/python/orca/src/bigdl/orca/learn/log_monitor.py
imports: import logging
  import os
  import time
  from bigdl.dllib.utils.log4Error import *
label_desc: Use image node_id 2 for calling the LogMonitor obj's underlying member method code with example usage: obj.close_log_file() without return types