On Tue, 2013-08-20 at 20:04 +0200, Jean-Sebastien Vachon wrote:
> Is there a way to flush the cache of all nodes in a Solr Cloud (by
> reloading all the cores, through the collection API, ...) without
> having to restart all nodes?
As MMapDirectory shares data with the OS disk cache, flushing of
Solr-related caches on a machine should involve
1) Shut down all Solr instances on the machine
2) Clear the OS read cache ('sudo echo 1 > /proc/sys/vm/drop_caches' on
a Linux box)
3) Start the Solr instances
I do not know of any Solr-supported way to do step 2. For our
performance tests we use custom scripts to perform the steps.
- Toke Eskildsen, State and University Library, Denmark
