ilto:u...@thetaphi.de]
> Sent: Tuesday, June 16, 2015 11:35 AM
> To: java-user@lucene.apache.org
> Subject: RE: IndexFormatTooOldException while upgrading Lucene 4.10 index
> to 5.2
>
> Hi,
>
> you need to add the JAR file lucene-backward-codec.jar to the classpath (or
> a
Indeed DirectDocValuesFormat had a back-compat break between 4.x and
5.x ... this is expected/allowed (it is an experimental format).
You should be able to do something like this to more forwards:
* In 4.x, open a new IndexWriter, using the default Codec (which is
back-compat)
* Use addIndex
; From: Sven Teichmann [mailto:s.teichm...@s4ip.de]
> Sent: Tuesday, June 16, 2015 10:34 AM
> To: java-user@lucene.apache.org
> Subject: IndexFormatTooOldException while upgrading Lucene 4.10 index to
> 5.2
>
> Today I tried to upgrade a Lucene 4.10 index to 5.2 using the IndexUpg
Today I tried to upgrade a Lucene 4.10 index to 5.2 using the IndexUpgrader.
This throws the following exception:
Exception in thread "Lucene Merge Thread #0"
org.apache.lucene.index.MergePolicy$MergeException:
org.apache.lucene.index.IndexFormatTooOldException: Format version is
not supported (re
