I don't think there is anything low level in Lucene that will specifically
output anything like lastOptimized() to you, since it can be setup a few ways.
Your best bet is probably adding a postOptimize hook and dumping it to log /
file / monitor / etc, probably something like ...
<listener event="postCommit" class="solr.RunExecutableListener">
<str name="exe">lastOptimize.sh</str>
<str name="dir">solr/bin</str>
<bool name="wait">true</bool>
</listener>
Or writing to a file and reading it back into the admin if you need to display
it there.
More @ http://wiki.apache.org/solr/SolrConfigXml#Update_Handler_Section
- Jon
On Apr 22, 2010, at 11:16 AM, Shawn Heisey wrote:
> On 4/21/2010 1:24 PM, Shawn Heisey wrote:
>> Is it possible to issue some kind of query to a Solr core that will return
>> the last time the index was optimized? Every day, one of my shards should
>> get optimized, so I would like my monitoring system to tell me when the
>> newest optimize date is more than 24 hours ago. I could not find a way to
>> get this. The /admin/cores page has a lot of other useful information, but
>> not that particular piece.
>
> I have found some other useful information on the stats.jsp page, like the
> number of segments, the size of the index on disk, and so on. Still have not
> been able to locate the last optimize date, which would simply be the
> timestamp on the earliest disk segment.
>
> Thanks,
> Shawn
>
