Looks like it's some sort of ping (liveness) query, probably from a load balancer? Actually, it looks like it's a SolrJ client... here's the code that sets up that exact query: https://github.com/apache/lucene-solr/blob/master/solr/solrj/src/java/org/apache/solr/client/solrj/impl/LBHttpSolrClient.java#L135-L145
Solr does use LBHttpSolrClient internally sometimes, so it could either be Solr itself, or an external client using SolrJ/LBHttpSolrClient. bq. As a result of this URL, the memory on slaves goes high consistently leading to out of memory eventually. That should not be the case. -Yonik On Tue, Sep 26, 2017 at 6:55 AM, saurabhagrawal <saurabh.agraw...@gmail.com> wrote: > Hi, > > We are using SOLR 6.1 with hybris. On our production environment the set is > as follows: > > Master for replication using AFTER_COMMIT and 2 slaves which servers the > query response. The replication was initially set to 60 seconds as we wanted > latest data on slaves ASAP. > > On production environment we have started to see hits coming from all our 8 > hybris servers to SOLR slave servers of following pattern: > > 0.131.74.45 - - [26/Sep/2017:15:09:39 +0530] "GET > /solr/select?q=*%3A*&rows=0&sort=_docid_+asc&distrib=false&wt=javabin&version=2 > HTTP/1.1" 404 1081 > 10.131.74.45 - - [26/Sep/2017:15:09:44 +0530] "GET > /solr/select?q=*%3A*&rows=0&sort=_docid_+asc&distrib=false&wt=javabin&version=2 > HTTP/1.1" 404 1081 > 10.131.74.45 - - [26/Sep/2017:15:09:49 +0530] "GET > /solr/select?q=*%3A*&rows=0&sort=_docid_+asc&distrib=false&wt=javabin&version=2 > HTTP/1.1" 404 1081 > 10.131.74.45 - - [26/Sep/2017:15:09:54 +0530] "GET > /solr/select?q=*%3A*&rows=0&sort=_docid_+asc&distrib=false&wt=javabin&version=2 > HTTP/1.1" 404 1081 > 10.131.74.45 - - [26/Sep/2017:15:09:59 +0530] "GET > /solr/select?q=*%3A*&rows=0&sort=_docid_+asc&distrib=false&wt=javabin&version=2 > HTTP/1.1" 404 1081 > 10.131.74.45 - - [26/Sep/2017:15:10:04 +0530] "GET > /solr/select?q=*%3A*&rows=0&sort=_docid_+asc&distrib=false&wt=javabin&version=2 > HTTP/1.1" 404 1081 > 10.131.74.45 - - [26/Sep/2017:15:10:09 +0530] "GET > /solr/select?q=*%3A*&rows=0&sort=_docid_+asc&distrib=false&wt=javabin&version=2 > HTTP/1.1" 404 1081 > 10.131.74.45 - - [26/Sep/2017:15:10:14 +0530] "GET > /solr/select?q=*%3A*&rows=0&sort=_docid_+asc&distrib=false&wt=javabin&version=2 > HTTP/1.1" 404 1081 > > > These URLs are getting triggered from hybris nodes and just getting > triggered on production. On lower environments, we don't see this URL. > > Note: We are using Tomcat 8.5.14 which is hosting SOLR. > > Completely puzzled to see this URL and unable to figure out what is > triggering this URL. As a result of this URL, the memory on slaves goes high > consistently leading to out of memory eventually. > > Any idea of what this URL is and what component must be firing this ? > > Thanks in advance, > Saurabh > > > > > > -- > Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html
