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From "Mike Matrigali (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-6128) Examine Derby classes to determine if we need to add serialVersionUID to any of them
Date Thu, 18 Apr 2013 15:27:17 GMT

    [ https://issues.apache.org/jira/browse/DERBY-6128?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13635240#comment-13635240

Mike Matrigali commented on DERBY-6128:

Dag what kind of errors and in what situations will users using past releases.  What does
a user do if they run into problems?
And does soft vs. hard upgrade come into play?
Also can this change be backported, or does it cause problems if a user takes a new release
but then wants to downgrade back
to the older release within the version (ie. takes a 10.10.2 with a fix, but then wants to
go back to 10.10.1).

I've marked that this issue needs a release note, so that we warn users.  
> Examine Derby classes to determine if we need to add serialVersionUID to any of them
> ------------------------------------------------------------------------------------
>                 Key: DERBY-6128
>                 URL: https://issues.apache.org/jira/browse/DERBY-6128
>             Project: Derby
>          Issue Type: Task
>          Components: JDBC
>            Reporter: Rick Hillegas
>             Fix For:
>         Attachments: derby-6128-ecpds40.diff, SerializableLister.java
> The discussion on DERBY-6124 has raised the possibility that we may need to add serialVersionUIDs
to some serializable Derby classes. Without the serialVersionUIDs, Derby may encounter deserialization
errors on objects which were serialized by one version of Derby or the JVM and then deserialized
by another version of Derby or the JVM.

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