[jira] [Commented] (LUCENE-5858) Move back compat codecs out of core/ into codecs/ jar

["David Smiley (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/LUCENE-5858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14090334#comment-14090334 ] 

David Smiley commented on LUCENE-5858:
--------------------------------------

bq. removing old codecs from rotation (but still use the codecs from the lucene/codecs modules, like SimpleText, etc. which have all codec features)

+1

I don't have a strong opinion wether the old codecs move to some new jar or to existing codecs.jar.  The existing codecs.jar seems simple and sufficient.

Independently (but related) to this matter, I wish a test could articulate what _capabilities_ (e.g. need doc-values, need missing-value, needs term vectors with payloads) it _wants_ from the codec versus listing codec names it does _not_ want. This issue of putting old codecs out of rotation ameliorates the need for such a feature, but one day there's going to be something new and a test using it is going to be blacklisting stuff again.

> 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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