Too many open files issue when using maven-car-plugin:

[NisalaNiroshana]

Description:
It seems that "Too many open files" error occurred when using the maven-car plugin. This can be happened due to unclosed input streams.

Suggested Labels:
Bug

OS, DB, other environment details and versions:
java version "1.8.0_161"
Java(TM) SE Runtime Environment (build 1.8.0_161-b12)
Java HotSpot(TM) 64-Bit Server VM (build 25.161-b12, mixed mode)

Steps to reproduce:
Use maven-capp or maven car plugins with around 100-120 files. It will give the above mentioned "too many open files" issue.

[ezleyton]

Any update on this bug? It started happening to me today on a freshly installed ubuntu 18.04, my project was compiling fine in 16.04. The only workaround I found to work is to set ulimit -n 4096 (or any higher value) before running maven.