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https://issues.apache.org/jira/browse/LUCENE-8844?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Sokolov resolved LUCENE-8844.
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Fix Version/s: 8.2
Resolution: Fixed
> Bump FST Version (to 7)
> -----------------------
>
> Key: LUCENE-8844
> URL: https://issues.apache.org/jira/browse/LUCENE-8844
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Michael Sokolov
> Assignee: Michael Sokolov
> Priority: Major
> Fix For: 8.2
>
>
> In LUCENE-8781, we changed the FST encoding but did not bump the version
> number we write in its header. The change was backwards-compatible (new
> readers can still read old FSTs), but not forwards-compatible: older readers
> would exhibit strange behavior if they attempted to read one of these newer
> format FSTs.
> It would be much better if readers could catch such errors and notify in a
> sensible way, and we have version checking that does that; we just need to
> increase the VERSION_CURRENT constant.
> Also, ~[~dsmiley] points out the CHANGES.txt entries for LUCENE-8781 should
> be moved to the 8.2.0 section since that change was backported. I think we
> can clean that up at the same time since it's version-related.
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