[jira] [Assigned] (FLINK-3866) StringArraySerializer claims type is immutable; shouldn't

["Ivan Mushketyk (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-3866?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ivan Mushketyk reassigned FLINK-3866:
-------------------------------------

    Assignee: Ivan Mushketyk

> StringArraySerializer claims type is immutable; shouldn't
> ---------------------------------------------------------
>
>                 Key: FLINK-3866
>                 URL: https://issues.apache.org/jira/browse/FLINK-3866
>             Project: Flink
>          Issue Type: Improvement
>          Components: Core
>    Affects Versions: 1.0.3
>            Reporter: Tatu Saloranta
>            Assignee: Ivan Mushketyk
>            Priority: Minor
>
> Looking at default `TypeSerializer` instances I noticed what looks like a minor flaw, unless I am missing something.
> Whereas all other array serializers indicate that type is not immutable (since in Java, arrays are not immutable), `StringArraySerializer` has:
> ```
> 	@Override
> 	public boolean isImmutableType() {
> 		return true;
> 	}
> ```
> and I think it should instead return `false`. I could create a PR, but seems like a small enough thing that issue report makes more sense.
> I tried looking for deps to see if there's a test for this, but couldn't find one; otherwise could submit a test fix.



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