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Posted to notifications@groovy.apache.org by "Daniel Sun (Jira)" <ji...@apache.org> on 2019/12/06 04:12:00 UTC
[jira] [Updated] (GROOVY-9329) OOME raised while
`parseClass(scriptText)`
[ https://issues.apache.org/jira/browse/GROOVY-9329?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Sun updated GROOVY-9329:
-------------------------------
Description:
Many groovy users have encountered the OOME while {{parseClass(scriptText)}} even if the {{scriptText}} has not been changed.
The cause of the issue is the script file name is generated via {{System.currentTimeMillis()}}, so the script file name will change even if the script text is not changed. As a result, many class instances are created and cached in {{groovy.lang.GroovyClassLoader#classCache}}, the classes can not be GCed, which causes OOME.
The solution is very simple, the script file name could be generated via md5, which will not change if the script text is not changed.
{code:java}
def gcl = new GroovyClassLoader()
while (true) {
gcl.parseClass('def x = 1')
}
{code}
Error message:
{code:java}
java.lang.OutOfMemoryError: Compressed class space
at ConsoleScript6.run(ConsoleScript6:4)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
{code}
was:
Many groovy users have encountered the OOME while {{parseClass(scriptText)}} even if the {{scriptText}} has not been changed.
The cause of the issue is the script file name is generated via {{System.currentTimeMillis()}}, so the script file name will change even if the script text is not changed.
The solution is very simple, the script file name could be generated via md5, which will not change if the script text is not changed.
{code:java}
def gcl = new GroovyClassLoader()
while (true) {
gcl.parseClass('def x = 1')
}
{code}
Error message:
{code:java}
java.lang.OutOfMemoryError: Compressed class space
at ConsoleScript6.run(ConsoleScript6:4)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
{code}
> OOME raised while `parseClass(scriptText)`
> ------------------------------------------
>
> Key: GROOVY-9329
> URL: https://issues.apache.org/jira/browse/GROOVY-9329
> Project: Groovy
> Issue Type: Bug
> Reporter: Daniel Sun
> Assignee: Daniel Sun
> Priority: Critical
> Fix For: 3.0.0
>
>
> Many groovy users have encountered the OOME while {{parseClass(scriptText)}} even if the {{scriptText}} has not been changed.
> The cause of the issue is the script file name is generated via {{System.currentTimeMillis()}}, so the script file name will change even if the script text is not changed. As a result, many class instances are created and cached in {{groovy.lang.GroovyClassLoader#classCache}}, the classes can not be GCed, which causes OOME.
> The solution is very simple, the script file name could be generated via md5, which will not change if the script text is not changed.
> {code:java}
> def gcl = new GroovyClassLoader()
> while (true) {
> gcl.parseClass('def x = 1')
> }
> {code}
> Error message:
> {code:java}
> java.lang.OutOfMemoryError: Compressed class space
> at ConsoleScript6.run(ConsoleScript6:4)
> at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> {code}
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