[Kubernetes] java.lang.OutOfMemoryError: Metaspace ?

[Niels Basjes]

Hi,

I'm running a lot of batch jobs on Kubernetes once in a while I get this
exception.
What is causing this?
How can I fix this?

Niels Basjes

java.lang.OutOfMemoryError: Metaspace
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:757)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:
142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:468)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:419)
    at org.apache.flink.util.ChildFirstClassLoader.loadClass(
ChildFirstClassLoader.java:60)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:352)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:757)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:
142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:468)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:419)
    at org.apache.flink.util.ChildFirstClassLoader.loadClass(
ChildFirstClassLoader.java:60)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:352)
    at org.apache.logging.log4j.LogManager.<clinit>(LogManager.java:60)
    at org.elasticsearch.common.logging.ESLoggerFactory.getLogger(
ESLoggerFactory.java:45)
    at org.elasticsearch.common.logging.ESLoggerFactory.getLogger(
ESLoggerFactory.java:53)
    at org.elasticsearch.common.logging.Loggers.getLogger(Loggers.java:104)
    at org.elasticsearch.common.unit.ByteSizeValue.<clinit>(ByteSizeValue
.java:39)
    at org.elasticsearch.action.bulk.BulkProcessor$Builder.<init>(
BulkProcessor.java:88)
    at org.elasticsearch.action.bulk.BulkProcessor$Builder.<init>(
BulkProcessor.java:80)
    at org.elasticsearch.action.bulk.BulkProcessor.builder(BulkProcessor
.java:174)

-- 
Best regards / Met vriendelijke groeten,

Niels Basjes