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https://issues.apache.org/jira/browse/FLINK-22639?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17344397#comment-17344397
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Yao Zhang commented on FLINK-22639:
-----------------------------------
Could you pls assign this to me？
> ClassLoaderUtil cannot print classpath of FlinkUserCodeClassLoader
> ------------------------------------------------------------------
>
> Key: FLINK-22639
> URL: https://issues.apache.org/jira/browse/FLINK-22639
> Project: Flink
> Issue Type: Improvement
> Components: Runtime / Configuration, Table SQL / Runtime
> Affects Versions: 1.13.0
> Reporter: Adrian Zhong
> Priority: Major
>
> Hello, community.
> I found FlinkUserCodeClassLoader is wrapping by
> SafetyNetWrapperClassLoader, but it cut getURL invoking chain.
>
> ClassLoaderUtil.getUserCodeClassLoaderInfo:
> {code:java}
> public static String getUserCodeClassLoaderInfo(ClassLoader loader) {
> if (loader instanceof URLClassLoader) {
> URLClassLoader cl = (URLClassLoader) loader;
> try {
> StringBuilder bld = new StringBuilder();
> if (cl == ClassLoader.getSystemClassLoader()) {
> bld.append("System ClassLoader: ");
> } else {
> bld.append("URL ClassLoader:");
> }
> for (URL url : cl.getURLs()) {
> }
> }{code}
> {code:java}
> SafetyNetWrapperClassLoader(FlinkUserCodeClassLoader inner, ClassLoader
> parent) {
> super(new URL[0], parent);
> this.inner = inner;
> }
> {code}
> The constructor passed an empty array to super class,
> SafetyNetWrapperClassLoader.getURL {color:#505f79}*should dispatch this
> invocation*{color}.
> {code:java}
> @Override
> public URL[] getURLs() {
> return inner.getURLs();
> }
> {code}
> Otherwise,
> {code:java}
> ClassLoaderUtil.getUserCodeClassLoaderInfo(theJarClassLoader);
> {code}
> will print empty, like below:
> {code:java}
> URL ClassLoader:
> {code}
>
>
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