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https://issues.apache.org/jira/browse/LUCENE-5858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14080909#comment-14080909
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Adrien Grand commented on LUCENE-5858:
--------------------------------------
+1 on these ideas:
- creating a new module/jar that would contain old codecs, their tests
(TestXXXFormat), TestBackwardCompatibility and potentially classes that only
old codecs use
- removing old codecs from rotation (but still use the codecs from the
lucene/codecs modules, like SimpleText, etc. which have all codec features)
- adding information about the backward-compat and codecs modules to the
javadocs and exceptions of Codec/PostingsFormat/DocValuesFormat.forName
On a side note, if we want to keep backward compatibility manageable, I think
we should think about releasing Lucene 5.0 soon (4.x is almost 2 years old
already).
> Move back compat codecs out of core/ into codecs/ jar
> -----------------------------------------------------
>
> Key: LUCENE-5858
> URL: https://issues.apache.org/jira/browse/LUCENE-5858
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Robert Muir
>
> These take significant space and bloat core lucene. Not everyone needs the
> ability to read ancient indexes (especially building a new app).
> We should move this cruft out of the core/ jar. codecs/ is the obvious place,
> its already setup in the build system for tests and everything else.
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