On Thu, Sep 17, 2015 at 8:43 PM, Guillaume Smet <guillaume.smet(a)gmail.com>
wrote:
Hi,
I upgraded our framework to 5.5.0 and I have a few questions about it.
==
First, I had to remove the existing indexes otherwise I had exceptions
about version of the index. Is this expected? As far as I remember, it's
been a long time since we had to remove the indexes after an upgrade.
Caused by: org.apache.lucene.index.IndexFormatTooOldException: Format
version is not supported (resource
BufferedChecksumIndexInput(MMapIndexInput(path="/data/services/test/data/helios/lucene/fr.openwide.helios.core.business.ticket.model.MessageFile/segments_1"))):
-11 (needs to be between 1071082519 and 1071082519). This version of
Lucene only supports indexes created with release 4.0 and later.
Maybe it should be integrated in the blog post that one might need to
clean up indexes if they come from before the switch to Lucene 4?
It should be possible to read Lucene 4 indexes from Lucene 5, but you need
to add the codec in your classpath [1]
Could you give a try and let us know if it works for you?
[1]
http://repo1.maven.org/maven2/org/apache/lucene/lucene-backward-codecs/5....
Cheers,
Gustavo