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From Shawn Heisey <>
Subject Re: Solr Issue
Date Wed, 07 Dec 2016 17:01:28 GMT
On 12/7/2016 3:24 AM, Monti Chandra wrote:
> I am working on solr version to 6.2.1. It was working so nice for the first
> 20 days and now the server is restarting very slow(15-20 min).
> Please get the hardware specs of my system below:
> Linux version 3.10.0-327.el7.x86_64 ( (gcc
> version 4.8.3 20140911 (Red Hat 4.8.3-9) (GCC) )
> kernel-3.10.0-327.el7.x86_64

These are not hardware specs.  They are software specs, and really don't
contain anything useful.  From this, we can tell that you are running
CentOS 7 64-bit with a 3.10 kernel, and that's pretty much it.

> It is working fine when i am taking solr directory to another server of
> same configuartion.
> As I am using 6.2.1 basically,  So i have downloaded the fresh
> solr-6.2.1(without any collection) and try to start the same but the server
> is not  able to start effectively. please get the log below:
> 596  INFO  (main) [   ] o.a.s.c.CoreContainer No authentication plugin used.
> 127902 INFO  (main) [   ] o.a.s.c.CorePropertiesLocator Looking for core
> definitions underneath /root/temp/solr-6.2.1/server/solr
> 127906 INFO  (main) [   ] o.a.s.c.CorePropertiesLocator Found 0 core
> definitions
> 127909 INFO  (main) [   ] o.a.s.s.SolrDispatchFilter
> user.dir=/root/temp/solr-6.2.1/server
> 127909 INFO  (main) [   ] o.a.s.s.SolrDispatchFilter
> SolrDispatchFilter.init() done
> 127918 INFO  (main) [   ] o.e.j.s.h.ContextHandler Started
> o.e.j.w.WebAppContext@5383967b
> {/solr,file:///root/temp/solr-6.2.1/server/solr-webapp/webapp/,AVAILABLE}{/root/temp/solr-6.2.1/server/solr-webapp/webapp}
> 127926 INFO  (main) [   ] o.e.j.s.ServerConnector Started
> ServerConnector@1573f9fc{HTTP/1.1,[http/1.1]}{}
> 127926 INFO  (main) [   ] o.e.j.s.Server Started @128185ms
> Is there any H/w, OS or kernel level threat caused by running solr? Please
> help me I am wondering for a very long time.

This log shows no errors.  It says that Jetty is listening on port
9999.  It does look like it took a couple of minutes for Solr to finish
starting, but other than that, I cannot see any problems here.

Troubleshooting performance issues like this requires careful
observation, and may be very difficult to do via a mailing list.  We
have pretty much zero information to go on, and the logs you have sent
do not even contain any relevant warnings.

There is only one odd thing.  The log jumps from 596 milliseconds to
127902 milliseconds -- over two minutes with absolutely no information
logged, after which it completes startup.  When I start a
freshly-downloaded Solr 6.2.1 in foreground mode, the time difference
between these two log entries on my system is only 32 milliseconds, and
then Solr is fully started less than a second later.

4271 INFO  (main) [   ] o.a.s.c.CoreContainer No authentication plugin used.
4303 INFO  (main) [   ] o.a.s.c.CorePropertiesLocator Looking for core
definitions underneath C:\Users\sheisey\Downloads\solr-6.2.1\server\solr
4552 INFO  (main) [   ] o.a.s.c.CorePropertiesLocator Found 0 core
4552 INFO  (main) [   ] o.a.s.s.SolrDispatchFilter
4552 INFO  (main) [   ] o.a.s.s.SolrDispatchFilter
SolrDispatchFilter.init() done
4553 INFO  (main) [   ] o.e.j.s.h.ContextHandler Started
4559 INFO  (main) [   ] o.e.j.s.ServerConnector Started
4560 INFO  (main) [   ] o.e.j.s.Server Started @5548ms

Do you have any more information you can share?  Something I'd like to
see is a screenshot of "top" running in your terminal, after starting
the fresh Solr with no collections.  Before getting the screenshot,
press shift-M to sort the list by memory usage.


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