We have a master-slave Solr set up and run live queries only against the
slave. Full import (with optimize) happens on master every day at 2 a.m.
Delta imports happen every 10 min for one entity and every hour for another
entity.
The following exceptions occur a few times every day in our app logs:
...
org.apache.solr.client.solrj.SolrServerException: Error executing query
at
org.apache.solr.client.solrj.request.QueryRequest.process(QueryRequest.java:95)
at
org.apache.solr.client.solrj.SolrServer.query(SolrServer.java:118)
...
and this one:
...
org.apache.solr.client.solrj.SolrServerException: java.net.SocketException:
Connection reset
at
org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:478)
at
org.apache.solr.client.solrj.impl.CommonsHttpSolrServer.request(CommonsHttpSolrServer.java:244)
at
org.apache.solr.client.solrj.request.QueryRequest.process(QueryRequest.java:89)
at
org.apache.solr.client.solrj.SolrServer.query(SolrServer.java:118)
...
These happen on different queries at different times, so they are not
query-dependent.
If I inspect the localhost.log file in tomcat on the solr slave server, the
following exception occurs at the same time:
Apr 06, 2013 7:16:33 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet default threw exception
java.lang.IllegalStateException
at
org.apache.catalina.connector.ResponseFacade.sendError(ResponseFacade.java:407)
at
org.apache.solr.servlet.SolrDispatchFilter.sendError(SolrDispatchFilter.java:389)
at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:291)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:859)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
at
org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
at java.lang.Thread.run(Thread.java:722)
...
The replication set-up is as follows:
<requestHandler name="/replication" class="solr.ReplicationHandler" >
<lst name="master">
<str name="enable">${enable.master:false}</str>
<str name="replicateAfter">startup</str>
<str name="replicateAfter">commit</str>
<str name="replicateAfter">optimize</str>
<str
name="confFiles">solrconfig.xml,data-config.xml,schema.xml,stopwords.txt,synonyms.txt,elevate.xml</str>
</lst>
<lst name="slave">
<str name="enable">${enable.slave:false}</str>
<str name="masterUrl">http://${master.ip}:${master.port}/solr/${
solr.core.name}/replication</str>
<str name="pollInterval">00:01:00</str>
</lst>
</requestHandler>
Aside from the full and delta imports, we also have external file fields
which are loaded every 1 hour with reloadCache on both master and slave.
What is causing these exceptions and how do I fix it?
Thanks.
