Hi All,
I am not sure whether this question should be posed in the GeoWebCache or
GeoServer lists. My issue arises when using the built-in GeoWebCache
functionality but it seems the error is occuring in GeoServer - hence posting
in this list but please tell me if it would be more appropriate to post to
GeoWebCache list.
With that said here is my issue. I am trying to seed a Group Layer whose
individual layers come from a PostGIS database. I am seeding at zoom level 17
with an EPSG:900913 gridset. The threads start running and then one by one each
thread is terminated - this happens no matter how many threads are set running.
Inspecting the log file I see that the threads have been running and requesting
data from GeoServer. At the point where the threads start terminating I see a
number of the following errors:
<?xml version="1.0" encoding="UTF-8" standalone="no"?><!DOCTYPE
ServiceExceptionReport SYSTEM
"http://localhost:8080/geoserver/schemas/wms/1.1.1/WMS_exception_1_1_1.dtd";>
<ServiceExceptionReport version="1.1.1" > <ServiceException
code="internalError">
Rendering process failed
java.io.IOException
null
An I/O error occured while sending to the backend.
No buffer space available (maximum connections reached?): recv failed
Details:
org.geoserver.platform.ServiceException: Rendering process failed
at
org.geoserver.wms.map.RenderedImageMapOutputFormat.produceMap(RenderedImageMapOutputFormat.java:510)
at
org.geoserver.wms.map.RenderedImageMapOutputFormat.produceMap(RenderedImageMapOutputFormat.java:250)
at
org.geoserver.wms.map.RenderedImageMapOutputFormat.produceMap(RenderedImageMapOutputFormat.java:125)
at org.geoserver.wms.GetMap.run(GetMap.java:374)
at org.geoserver.wms.GetMap.run(GetMap.java:107)
at org.geoserver.wms.DefaultWebMapService.getMap(DefaultWebMapService.java:353)
at sun.reflect.GeneratedMethodAccessor197.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at
org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:310)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
at
org.geoserver.gwc.wms.CacheSeedingWebMapService.invoke(CacheSeedingWebMapService.java:60)
at
org.geoserver.gwc.wms.CacheSeedingWebMapService.invoke(CacheSeedingWebMapService.java:34)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at
org.geoserver.gwc.wms.CachingWebMapService.invoke(CachingWebMapService.java:58)
at
org.geoserver.gwc.wms.CachingWebMapService.invoke(CachingWebMapService.java:40)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at
org.geoserver.ows.util.RequestObjectLogger.invoke(RequestObjectLogger.java:51)
at
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at
org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy26.getMap(Unknown Source)
at sun.reflect.GeneratedMethodAccessor205.invoke(Unknown Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.geoserver.ows.Dispatcher.execute(Dispatcher.java:630)
at org.geoserver.ows.Dispatcher.handleRequestInternal(Dispatcher.java:234)
at
org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
at
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:875)
at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:809)
at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
at
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
org.geoserver.filters.ThreadLocalsCleanupFilter.doFilter(ThreadLocalsCleanupFilter.java:23)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
org.geoserver.filters.SpringDelegatingFilter$Chain.doFilter(SpringDelegatingFilter.java:74)
at
org.geoserver.filters.SpringDelegatingFilter.doFilter(SpringDelegatingFilter.java:45)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
org.geoserver.platform.AdvancedDispatchFilter.doFilter(AdvancedDispatchFilter.java:49)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
org.vfny.geoserver.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:109)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:394)
at
org.springframework.security.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:109)
at
org.springframework.security.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:406)
at
org.springframework.security.ui.ExceptionTranslationFilter.doFilterHttp(ExceptionTranslationFilter.java:101)
at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:406)
at
org.springframework.security.providers.anonymous.AnonymousProcessingFilter.doFilterHttp(AnonymousProcessingFilter.java:105)
at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:406)
at
org.springframework.security.ui.basicauth.BasicProcessingFilter.doFilterHttp(BasicProcessingFilter.java:174)
at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:406)
at
org.springframework.security.context.HttpSessionContextIntegrationFilter.doFilterHttp(HttpSessionContextIntegrationFilter.java:235)
at
org.springframework.security.ui.SpringSecurityFilter.doFilter(SpringSecurityFilter.java:53)
at
org.springframework.security.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:406)
at
org.springframework.security.util.FilterChainProxy.doFilter(FilterChainProxy.java:185)
at
org.springframework.security.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:99)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.geoserver.filters.LoggingFilter.doFilter(LoggingFilter.java:71)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
org.geoserver.filters.ReverseProxyFilter.doFilter(ReverseProxyFilter.java:183)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.geoserver.filters.GZIPFilter.doFilter(GZIPFilter.java:47)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
org.geoserver.filters.SessionDebugFilter.doFilter(SessionDebugFilter.java:46)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:185)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:151)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
at
org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:269)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)
at
org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1773)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.RuntimeException: java.io.IOException
at
org.geotools.data.store.ContentFeatureCollection.iterator(ContentFeatureCollection.java:258)
at
org.geotools.renderer.lite.StreamingRenderer.drawPlain(StreamingRenderer.java:2164)
at
org.geotools.renderer.lite.StreamingRenderer.processStylers(StreamingRenderer.java:1972)
at
org.geotools.renderer.lite.StreamingRenderer.paint(StreamingRenderer.java:781)
at
org.geoserver.wms.map.RenderedImageMapOutputFormat.produceMap(RenderedImageMapOutputFormat.java:484)
... 95 more
Caused by: java.io.IOException
at
org.geotools.jdbc.JDBCFeatureSource.getReaderInternal(JDBCFeatureSource.java:576)
at
org.geotools.jdbc.JDBCFeatureStore.getReaderInternal(JDBCFeatureStore.java:210)
at
org.geotools.data.store.ContentFeatureSource.getReader(ContentFeatureSource.java:484)
at
org.geotools.data.store.ContentFeatureCollection.iterator(ContentFeatureCollection.java:255)
... 99 more
Caused by: org.postgresql.util.PSQLException: An I/O error occured while
sending to the backend.
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:283)
at
org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:479)
at
org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:353)
at
org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:252)
at
org.apache.commons.dbcp.DelegatingStatement.executeQuery(DelegatingStatement.java:208)
at
org.apache.commons.dbcp.DelegatingStatement.executeQuery(DelegatingStatement.java:208)
at org.geotools.jdbc.JDBCFeatureReader.<init>(JDBCFeatureReader.java:150)
at
org.geotools.jdbc.JDBCFeatureSource.getReaderInternal(JDBCFeatureSource.java:567)
... 102 more
Caused by: java.net.SocketException: No buffer space available (maximum
connections reached?): recv failed
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.read(SocketInputStream.java:150)
at java.net.SocketInputStream.read(SocketInputStream.java:121)
at
org.postgresql.core.VisibleBufferedInputStream.read(VisibleBufferedInputStream.java:209)
at org.postgresql.core.PGStream.Receive(PGStream.java:445)
at org.postgresql.core.PGStream.ReceiveTupleV3(PGStream.java:350)
at
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1774)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:257)
... 109 more
</ServiceException></ServiceExceptionReport>
If I interpret this correctly then it would seem that GeoServer is running out
of connections? I am also seeing the following error message in the log file:
2012-07-04 23:33:00,468 WARN [org.geotools.jdbc] - There is code leaving
feature readers/iterators open, this is leaking statements and connections!
Which I think backs up my view that the server is running out of connections.
Any ideas why this might be happening or what needs to be done to fix it? My
platform is:
GeoServer 2.1.4
Apache Tomcat 7.0.21
Oracle Java JDK 1.7.0
Windows Server 2003
PostgreSQL 9.1.3
PostGIS 2.0
Many thanks,
Colin Henderson
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