[sakai-core-team] Issue with search in a cluster and old search components

[Matthew Jones]

Actually, thinking about this more and talking to a few people, I'm leaning
strongly on just removing all of the legacy search components and writing
up documentation for 10.1 if anyone really needs to continue using them. I
did that locally in about 15 minutes and it starts up okay. Going to do
some quick tests tonight but looks good so far. The only thing really in
search-impl left is the shims (which existed to plugin other search
components, mostly SOLR) and the content hosting digesters, which really
should be moved into content.


On Fri, Aug 8, 2014 at 6:23 PM, Matthew Jones <matthew at longsight.com> wrote:

> So by moving all of these components to shared to fix a problem with
> elastic search in a cluster in
> https://jira.sakaiproject.org/browse/SAK-27658 it broke the old search.
> This was because that used lucene 2.9, and elasticsearch used 4.5 (now 4.7
> but basically the same).
>
> In 10.0, elasticsearch was in it's own pack (elasticsearch-component) and
> it's had it's own version(s) of lucene so didn't conflict against the old
> search. Now that they're in shared, searck-pack has to use the shared
> version or it won't work.
>
> I worked on this for about half an hour and did the "easy upgrades"
> (imports/search replace) lowering the errors from about 200 to ~135. Now
> what's appear to be left are the medium and hard upgrades. Looking at the
> list, I'm betting it could take anywhere from a half day to a day to get
> these removed. The problem is there's not 100% guarantee it will work the
> same and the indexes will not work anyway (no support for 2.9 indexes)
>
> So the only option I can think of is to remove the old search files and
> beans completely from the search tool for 11 and 10.1. Nobody will want to
> run it if it's untested and doesn't work with their old data.
>
> If someone wants to run the old search, they would have to deploy 10.0
> search and help before these changes were made and remove lucene-* jars
> from shared.
>
> Any thoughts?
>
> https://jira.sakaiproject.org/browse/SAK-27788
>
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