Are you running with the stock Jetty-based server or did you configure your own servlet container / config? Any plugins / extensions to Solr?
It would be odd for FastLRUCache to be involved - I don't think that code has changed between 4.8.1 and 4.10.4 -Yonik On Thu, Jul 2, 2015 at 3:36 PM, Ronald Wood <rw...@smarsh.com> wrote: > > We are running into an issue when doing distributed queries on Solr 4.10.4. > We do not use SolrCloud but instead keep track of shards that need to be > searched based on date ranges. > > We have been running distributed queries without incident for several years > now, but we only recently upgraded to 4.10.4 from 4.8.1. > > The query is relatively simple and involves 4 shards, including the > aggregator itself. > > For a while the server that is acting as the aggregator for the distributed > query handles the requests fine, but after an indefinite amount of usage (in > the range of 2-4 hours) it starts hanging on all distributed queries while > serving non-distributed versions (no shards list is included) of the same > query quickly (9 ms). > > CPU, Heap and System Memory Usage do not seem unusual compared to other > servers. > > I had initially suspect that distributed searches combined with faceting > might be part of the issue, since I had seen some long-running threads that > seemed to spend a long time in the FastLRUCache when getting facets for a > single field. However, in the latest case of blocked queries, I am not seeing > that. > > We have two slaves that replicate from a master, and we were saw the issue > recur after a while of client usage, ruling out a hardware issue. > > Does anyone have any suggestions for potential avenues of attack for getting > to the bottom of this? Or are there any known issues that could be implicated > in this? > > - Ronald S. Wood
