Solr is not responding on deployment in tomcat

[Per Newgro]

Hi,

maybe someone here can help me with my solr-4.3.1 issue.

I've successful deployed the solr.war on a tomcat7 instance.
Starting the tomcat with only the solr.war deployed - works nicely.
I can see the admin interface and logs are "clean".

If i
deploy my wicket-spring-data-solr based app (using the HttpSolrServer)
after the solr app
without restarting the tomcat
=> all is fine to.

I've implemented a ping to see if server is up.

<code>
        private void waitUntilSolrIsAvailable(int i) {
                if (i == 0) {
                        logger.info("Check solr state...");
                }
                if (i > 5) {
                        throw new RuntimeException("Solr is not avaliable after 
more than 25 secs. Going down now.");
                }
                if (i > 0) {
                        try {
                                logger.info("Wait for solr to get alive.");
                                Thread.currentThread().wait(5000);
                        } catch (InterruptedException e) {
                                throw new RuntimeException(e);
                        }
                }
                try {
                        i++;
                        SolrPingResponse r = solrServer.ping();
                        if (r.getStatus() > 0) {
                                waitUntilSolrIsAvailable(i);
                        }
                        logger.info("Solr is alive.");
                } catch (SolrServerException | IOException e) {
                        throw new RuntimeException(e);
                }
        }
</code>

Here i can see log
<log>
54295 [localhost-startStop-2] INFO  org.apache.wicket.Application  – 
[wicket.project] init: Wicket extensions initializer
INFO  - 2013-07-15 12:07:45.261; 
de.company.service.SolrServerInitializationService; Check solr state...
54505 [localhost-startStop-2] INFO  
de.company.service.SolrServerInitializationService  – Check solr state...
INFO  - 2013-07-15 12:07:45.768; org.apache.solr.core.SolrCore; [collection1] 
webapp=/solr path=/admin/ping params={wt=javabin&version=2} hits=0 status=0 
QTime=20
55012 [http-bio-8080-exec-1] INFO  org.apache.solr.core.SolrCore  – 
[collection1] webapp=/solr path=/admin/ping params={wt=javabin&version=2} 
hits=0 status=0 QTime=20
INFO  - 2013-07-15 12:07:45.770; org.apache.solr.core.SolrCore; [collection1] 
webapp=/solr path=/admin/ping params={wt=javabin&version=2} status=0 QTime=22
55014 [http-bio-8080-exec-1] INFO  org.apache.solr.core.SolrCore  – 
[collection1] webapp=/solr path=/admin/ping params={wt=javabin&version=2} 
status=0 QTime=22
INFO  - 2013-07-15 12:07:45.854; 
de.company.service.SolrServerInitializationService; Solr is alive.
55098 [localhost-startStop-2] INFO  
de.company.service.SolrServerInitializationService  – Solr is alive.
</log>

But if i
restart the tomcat
with both webapps (solr and wicket)
the solr is not responding on the ping request.

<log>
INFO  - 2013-07-15 12:02:27.634; org.apache.wicket.Application; 
[wicket.project] init: Wicket extensions initializer
11932 [localhost-startStop-1] INFO  org.apache.wicket.Application  – 
[wicket.project] init: Wicket extensions initializer
INFO  - 2013-07-15 12:02:27.787; 
de.company.service.SolrServerInitializationService; Check solr state...
12085 [localhost-startStop-1] INFO  
de.company.service.SolrServerInitializationService  – Check solr state...
</log>

What could that be or how can i get infos where this is stopping?

Thanks for your support
Per