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https://issues.apache.org/jira/browse/SOLR-2613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13080041#comment-13080041
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James Dyer commented on SOLR-2613:
----------------------------------
{quote}
Try a non-Oracle implementation.
{quote}
I understand the difficulties with bdb-je. When I selected this, I though it
would be ok to use because the Lucene db-contrib used it. But since then "db"
has gone away, partly because of this dependency, partly because there were no
unit tests.
{quote}
An ant target
{quote}
At least 1 commiter here was outraged that the Lucene build would automatically
download a non-compatible-license file when doing a building the old db-contrib
module, so I shy away from that option. I thought about creating a mock-bdb
jar that would just throw a special exception when you try to use it (then the
unit tests can just print out a warning and users who want to really test/use
the functionality could get bdb from Oracle). I thought about apache-extras,
but it would be easy for this to become out-of-sync with the rest of the
project. I also have a lucene-backed-cache that I wrote to help set up testing
scenario. I could contribute that and it would probably perform for many uses.
Others with more Lucene experience might improve it and maybe it could perform
as good as the bdb-je one? There's a lot of options but its all moot for the
moment because the prerequsites in SOLR-2382 are not yet committed.
{quote}
A way to pre-load the backing database
{quote}
You can pre-load the caches with DIHCacheWriter. You then use
DIHCacheProcessor to read the data back in later. See
TestDIHCacheWriterAndProcessor in SOLR-2382. Is this what you mean?
> DIH Cache backed w/bdb-je
> -------------------------
>
> Key: SOLR-2613
> URL: https://issues.apache.org/jira/browse/SOLR-2613
> Project: Solr
> Issue Type: Improvement
> Components: contrib - DataImportHandler
> Affects Versions: 4.0
> Reporter: James Dyer
> Priority: Minor
> Attachments: SOLR-2613.patch, SOLR-2613.patch, SOLR-2613.patch,
> SOLR-2613.patch
>
>
> This is spun out of SOLR-2382, which provides a framework for multiple
> cacheing implementations with DIH. This cache implementation is fast &
> flexible, supporting persistence and delta updates. However, it depends on
> Berkley Database Java Edition so in order to evaluate this and use it you
> must download bdb-je from Oracle and accept the license requirements.
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