If my logstash input is File, do I still need to enable the persistent queue

As the question, my Logstash reads data from a file and eventually writes it to elasticsearch, I need to ensure that the data will not be lost, do I need to enable persistent queues? My question is whether I need to enable the persistent queue to save the data to a file, since the source of the input itself is already a file?

Yes. The sincedb is updated when a file input reads data. That does not mean the data has made it to the output, but does mean it will not be re-read.


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