Getting error when bulk json files trasfer from logstash to ELK

transferring more than 12000 same structured json files to ELK once. when I run logstash config file getting following error.

[2019-11-04T17:47:36,249][ERROR][org.logstash.Logstash ] java.lang.InternalError: /usr/lib/jvm/jdk1.8.0_131/jre/lib/ext/localedata.jar (Too many open files)

input {
file {
path => "/home/namalie/elk/activity/tourmega/convertedjson/TourMega_tourDetail_*.json"
start_position =>"beginning"
type =>"json"
sincedb_path => "/dev/null"

how to over come from this error

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