[jira] [Commented] (FLINK-15866) ClosureCleaner#getSuperClassOrInterfaceName throw NPE

["Aven Wu (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-15866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17029031#comment-17029031 ] 

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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