Hello, I am working with a MongoDB dataBase and a Jhipster Java system based which enters smartCity information in the MongoDB . When the system is running for many hours I have the following error:
Caused by: java.lang.OutOfMemoryError: unable to create new native thread
at java.lang.Thread.start0(Native Method)
at java.lang.Thread.start(Thread.java:717)
at com.mongodb.connection.DefaultServerMonitor.start(DefaultServerMonitor.java:80)
at com.mongodb.connection.DefaultServer.<init>(DefaultServer.java:73)
at com.mongodb.connection.DefaultClusterableServerFactory.create(DefaultClusterableServerFactory.java:72)
at com.mongodb.connection.BaseCluster.createServer(BaseCluster.java:364)
at com.mongodb.connection.SingleServerCluster.<init>(SingleServerCluster.java:52)
at com.mongodb.connection.DefaultClusterFactory.createCluster(DefaultClusterFactory.java:181)
at com.mongodb.Mongo.createCluster(Mongo.java:738)
at com.mongodb.Mongo.createCluster(Mongo.java:732)
at com.mongodb.Mongo.<init>(Mongo.java:298)
The system is running in a ubuntu 18.04 server with the following parameters:
sistemasfiware@smartcity:~$ ulimit -a
core file size (blocks, -c) 0
data seg size (kbytes, -d) unlimited
scheduling priority (-e) 0
file size (blocks, -f) unlimited
pending signals (-i) 38966
max locked memory (kbytes, -l) unlimited
max memory size (kbytes, -m) unlimited
open files (-n) 999999
pipe size (512 bytes, -p) 8
POSIX message queues (bytes, -q) 819200
real-time priority (-r) 0
stack size (kbytes, -s) 8192
cpu time (seconds, -t) unlimited
max user processes (-u) 4999999
virtual memory (kbytes, -v) unlimited
file locks (-x) unlimited
The mongodb runs in a docker
The system requirements are the following:
HardDisk : 19Gb
Ram 9GB
It is supposed that there can not be more threads in the system .
Any idea on how to solve the problem ?
Thanks
Gorka