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https://issues.apache.org/jira/browse/FLINK-15866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17029031#comment-17029031
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Aven Wu commented on FLINK-15866:
---------------------------------
Object type field was not implement Serializable, so checked it as unserialize
object, and add check null before call superclass's method.
> ClosureCleaner#getSuperClassOrInterfaceName throw NPE
> -----------------------------------------------------
>
> Key: FLINK-15866
> URL: https://issues.apache.org/jira/browse/FLINK-15866
> Project: Flink
> Issue Type: Bug
> Components: API / Core
> Affects Versions: 1.9.2
> Reporter: Aven Wu
> Priority: Critical
> Labels: pull-request-available
> Fix For: 1.10.0, 1.9.3
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When param ‘cls’ is Object class, it will throw NPE.
> {code:java}
> private static String getSuperClassOrInterfaceName(Class<?> cls) {
> Class<?> superclass = cls.getSuperclass();
> if (superclass.getName().startsWith("org.apache.flink")) {
> return superclass.getSimpleName();
> } else {
> for (Class<?> inFace : cls.getInterfaces()) {
> if (inFace.getName().startsWith("org.apache.flink")) {
> return inFace.getSimpleName();
> }
> }
> return null;
> }
> }{code}
> Class<?> superclass = cls.getSuperclass();
> superclass is null
>
>
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