NiFi opens too many jar files

[lu...@china-inv.cn]

Hi, Team,

We are using NiFi 1.3.0 and yesterday our NiFi server doesn't response 
anymore.
The root cause is that the NiFi service opens too many files (about 
1,000,000+ files)

Further investigation shows that most opened files are jar files in nar 
bundles (about 980,000+ files)
Same jar file in a nar file was opened multiple times without closing any 
of them. e.g.
I found file 
/opt/nifi/nifi-1.3.0/work/nar/extensions/nifi-websocket-services-api-nar-1.3.0.nar-unpacked/META-INF/bundled-dependencies/nifi-utils-1.3.0.jar
was opened several times without closing.

Are those jar files loaded by NarClassLoader and why they are opened so 
many times?

Any solution to this issue?

Thanks 

Boying




 
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