On 1/9/2013 8:38 AM, Shahar Davidson wrote:
I have a client app that uses SolrJ and which requires to collect the names
(and just the names) of all loaded cores.
I have about 380 Solr Cores on a single Solr server (net indices size is about
220GB).
Running the STATUS action takes about 800ms - that seems a bit too long, given
my requirements.
So here are my questions:
1) Is there any way to get _only_ the core Name of all cores?
2) Why does the STATUS request take such a long time and is there a way to
improve its performance?
I'm curious why 800 milliseconds isn't fast enough. How often do you
actually need to gather this information?
If you are incorporating it into something that will get accessed a lot
(such as a status servlet page), put a "minimum interval" capability
into the part of the program that contacts solr. If it's been less than
that minimum interval (5-10 seconds could be a recommended starting
point) since the last time the information was gathered, just use the
previously stored response rather than make a new request.
I have used this approach in a homegrown status servlet written with
SolrJ. I have been trying to come up with a way to generalize the
paradigm so it can be incorporated directly into a future SolrJ version.
Thanks,
Shawn
