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From Yonik Seeley <ysee...@gmail.com>
Subject Re: SOLR 6.1 | Continuous hits coming for unwanted URL pattern
Date Tue, 26 Sep 2017 18:40:00 GMT
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.agrawals@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

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