Deade letter queue setting create some log files which are not meaningful

[sunilmchaudhari (Sunil Chaudhari)]

Hi,
I am using LS-6.3.1. I enabled dead_letter_queue.

###logstash.yml----
path.data: /MyHome/logstash-6.3.1/data

Pipelines.yml

pipeline name is: my_pipe

After I restart my logstash, it creates files as below.

/MyHome/logstash-6.3.1/data/dead/dead_letter_queue/my_pipe/1.log , 2.log, 3.log, 4.log

These log files doesnt contain anything except single digit number. For example 1.log contains '1', 2.log contains '2' and so on.

How would I know whethere my conf is correct? where can I see dead events?

thanks
Sunil.