[jira] [Updated] (FLINK-12113) User code passing to fromCollection(Iterator, Class) not cleaned

["Flink Jira Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-12113?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Flink Jira Bot updated FLINK-12113:
-----------------------------------
    Labels: auto-deprioritized-major auto-unassigned stale-minor  (was: auto-deprioritized-major auto-unassigned)

I am the [Flink Jira Bot|https://github.com/apache/flink-jira-bot/] and I help the community manage its development. I see this issues has been marked as Minor but is unassigned and neither itself nor its Sub-Tasks have been updated for 180 days. I have gone ahead and marked it "stale-minor". If this ticket is still Minor, please either assign yourself or give an update. Afterwards, please remove the label or in 7 days the issue will be deprioritized.


> User code passing to fromCollection(Iterator, Class) not cleaned
> ----------------------------------------------------------------
>
>                 Key: FLINK-12113
>                 URL: https://issues.apache.org/jira/browse/FLINK-12113
>             Project: Flink
>          Issue Type: Bug
>          Components: API / DataStream
>    Affects Versions: 1.7.2
>            Reporter: yankai zhang
>            Priority: Minor
>              Labels: auto-deprioritized-major, auto-unassigned, stale-minor
>         Attachments: image-2019-04-07-21-52-37-264.png, image-2019-04-08-23-19-27-359.png
>
>
>  
> {code:java}
> interface IS<E> extends Iterator<E>, Serializable { }
> StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
> env.fromCollection(new IS<Object>() {
>     @Override
>     public boolean hasNext() {
>         return false;
>     }
>     @Override
>     public Object next() {
>         return null;
>     }
> }, Object.class);
> {code}
> Code piece above throws exception:
> {code:java}
> org.apache.flink.api.common.InvalidProgramException: The implementation of the SourceFunction is not serializable. The object probably contains or references non serializable fields.
>   at org.apache.flink.api.java.ClosureCleaner.clean(ClosureCleaner.java:99)
> ....{code}
> And my workaround is wrapping clean around iterator instance, like this:
>  
> {code:java}
> StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
> env.fromCollection(env.clean(new IS<Object>() {
>     @Override
>     public boolean hasNext() {
>         return false;
>     }
>     @Override
>     public Object next() {
>         return null;
>     }
> }), Object.class);
> {code}
>  
>  
>  



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