Old Release

This documentation relates to an old version of DSpace, version 4.x. Looking for another version? See all documentation.

This DSpace release is end-of-life and is no longer supported.

You are viewing an old version of this page. View the current version.

Compare with Current View Page History

« Previous Version 2 Next »

Upgrade Solr Indexes

After upgrading DSpace, you should optimize your Solr indexes to ensure that they are in the current format.  Solr can upgrade recent formats to its current one.  Doing this whenever you upgrade DSpace should keep the index formats current.  You can optimize your indexes with a command line tool such as <code>wget</code>:

Optimizing Solr indexes
wget http://www.example.com/solr/<core>/update?optimize=true

 

If you have been through several DSpace upgrades and have not done this, there is a chance that your indexes are in a format too old for the most recent Solr to convert:

Format error

Caused by: org.apache.lucene.index.IndexFormatTooOldException: Format version is not supported (resource: segment _386q in resource ChecksumIndexInput(MMapIndexInput(path="/space/dspace/solr/statistics/data/index/segments_37m6"))): 2.x. This version of Lucene only supports indexes created with release 3.0 and later.

You may be able to use your older DSpace installation before upgrading it, to upgrade your indexes enough that a second optimization after upgrading DSpace will succeed.  You can also use an external tool with its own version of the required libraries, such as Luke.  You will need a version of Lucene (the indexing library used by Solr) which can convert the earlier version into the later one.  So, for example, you could use the Solr webapp. in DSpace 1.8.x or 3.x, or Luke 3.5, to upgrade version 2 indexes to version 3.

  • No labels

All content on the LYRASIS Wiki is licensed under the CC BY (Attribution) license, unless otherwise noted.