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https://issues.apache.org/jira/browse/LUCENE-1473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12653545#action_12653545
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John Wang commented on LUCENE-1473:
-----------------------------------
The discussion here is whether it is better to have 100% of the time failing
vs. 10% of the time failing. (these are just meaningless numbers to express a
point)
I do buy Doug's comment about getting into a weird state due to data
serialization, but this is something Externalizable would solve.
This discussion has digressed to general Java serialization design, where it
originally scoped only to several lucene classes.
If it is documented that lucene only supports serialization of classes from the
same jar, is that really enough, doesn't it also depend on the compiler, if
someone were to build their own jar?
Furthermore, in a distributed environment with lotsa machines, it is always
idea to upgrade bit by bit, is taking this functionality away by imposing this
restriction a good trade-off to just implementing Externalizable for a few
classes, if Serializable is deemed to be dangerous, which I am not so sure
given the lucene classes we are talking about.
> Implement standard Serialization across Lucene versions
> -------------------------------------------------------
>
> Key: LUCENE-1473
> URL: https://issues.apache.org/jira/browse/LUCENE-1473
> Project: Lucene - Java
> Issue Type: Bug
> Components: Search
> Affects Versions: 2.4
> Reporter: Jason Rutherglen
> Priority: Minor
> Attachments: LUCENE-1473.patch
>
> Original Estimate: 8h
> Remaining Estimate: 8h
>
> To maintain serialization compatibility between Lucene versions,
> serialVersionUID needs to be added to classes that implement
> java.io.Serializable. java.io.Externalizable may be implemented in classes
> for faster performance.
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