Versions Compared

Old Version 2

changes.mady.by.user Mark H. Wood

Saved on

compared with

New Version 3

changes.mady.by.user Mark H. Wood

Saved on

Key

  • This line was added.
  • This line was removed.
  • Formatting was changed.
Comment: Further explain the chain of file version upgrades

...

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.  Once you have version 3 index files, you should be able to upgrade to DSpace 4.x, and the next optimization you do will upgrade the indexes again to version 4.