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https://issues.apache.org/jira/browse/YARN-5233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15364758#comment-15364758
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Li Lu commented on YARN-5233:
-----------------------------
Oh and, our ApplicationClassLoader will delegate the loadClass process to its
parent after the load fails in its code:
{code}
if (c == null && !isSystemClass(name, systemClasses)) {
// Try to load class from this classloader's URLs. Note that this is like
// the servlet spec, not the usual Java 2 behaviour where we ask the
// parent to attempt to load first.
try {
c = findClass(name);
if (LOG.isDebugEnabled() && c != null) {
LOG.debug("Loaded class: " + name + " ");
}
} catch (ClassNotFoundException e) {
if (LOG.isDebugEnabled()) {
LOG.debug(e);
}
ex = e;
}
}
if (c == null) { // try parent
c = parent.loadClass(name);
if (LOG.isDebugEnabled() && c != null) {
LOG.debug("Loaded class from parent: " + name + " ");
}
}
{code}
> Support for specifying a path for ATS plugin jars
> -------------------------------------------------
>
> Key: YARN-5233
> URL: https://issues.apache.org/jira/browse/YARN-5233
> Project: Hadoop YARN
> Issue Type: Sub-task
> Components: timelineserver
> Affects Versions: 2.8.0
> Reporter: Li Lu
> Assignee: Li Lu
> Attachments: YARN-5233-trunk.001.patch, YARN-5233-trunk.002.patch,
> YARN-5233-trunk.003.patch
>
>
> Third-party plugins need to add their jars to ATS. Most of the times,
> isolation is not needed. However, there needs to be a way to specify the
> path. For now, the jars on that path can be added to default classloader.
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