Resend the data from the beginning of a file with sincedb setting

[SongJieCN]

Hi Guys,

• Version: 5.0.1
• Operating System: CentOS6.8
• Config File (if you have sensitive info, please remove it):
  input {
  file {
  path => [
  "/opt/Logs/*",
  ]
  start_position => "beginning"
  sincedb_path => "/opt/tmp/.sincedb"
  }
  output{

  ---

}
} # END INPUT

• Sample Data:
• Steps to Reproduce:
  [1] We try to use the configuration to send our data within multi-files
  [2] After logstash be interrupted and we restart the logstash sending process
  [3] We found redundancy data in our receiver
  [4] After check the data, We guess the mechanism is resending from the beginning of file.
  Am i right? Or Some config mistakes here?

Thank you very much!