How to stop duplicate entries to output file created by output file plugin logstash?

Elastic Stack Logstash
1

Dear All,

I have log file having content

[29-Dec-2017 20:30:06] - ||CompanyID = 65
[30-Dec-2017 20:30:06] - ||CompanyID = 61

I am using output file plugin for storing logs to an output file as below

    output {

  file {

codec => line { format => "%{message}"}



path => "/Users/Satyaban/Development/ELKLogAnalysis/failedlog/failedoutput.log"

}

}

It stored above 2 lines of logs to failedoutput.log file but entries being duplicated continuously .

After sometime failedoutput.log file contained multiple lines above two lines of logs .

Kindly help how to prevent duplicate entries of logs in output file .

Current output log file ( failedoutput.log) contents are

    [29-Dec-2017 20:30:06] - ||CompanyID = 65  # First Duplicate entries
     [30-Dec-2017 20:30:06] - ||CompanyID = 61
    [29-Dec-2017 20:30:06] - ||CompanyID = 65 
     [30-Dec-2017 20:30:06] - ||CompanyID = 61 # Second Duplicate entries
    [29-Dec-2017 20:30:06] - ||CompanyID = 65 
     [30-Dec-2017 20:30:06] - ||CompanyID = 61 # Third Duplicate entries
    [29-Dec-2017 20:30:06] - ||CompanyID = 65
     [30-Dec-2017 20:30:06] - ||CompanyID = 61 # Fourth Duplicate entries
    [29-Dec-2017 20:30:06] - ||CompanyID = 65
    ..........  ........................  so on 
 [30-Dec-2017 20:30:06] - ||CompanyID = 61
2

What input do you have configured?

3

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