| Summary: | when maxConnections="-1" AprEndpoint init error | ||
|---|---|---|---|
| Product: | Tomcat 7 | Reporter: | hongjiang <w.hongjiang> |
| Component: | Connectors | Assignee: | Tomcat Developers Mailing List <dev> |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | sunqi800 |
| Priority: | P2 | ||
| Version: | 7.0.55 | ||
| Target Milestone: | --- | ||
| Hardware: | All | ||
| OS: | All | ||
*** Bug 56909 has been marked as a duplicate of this bug. *** The way the APR Poller works, an unlimited number of connections isn't possible. I see two options if maxConnections is specified as -1. a) Log an error and don't let the connector start b) Use a high number (e.g. 64k), log a warning and start the connector. I'm leaning towards b). In the end I decided to ignore values of -1, log a warning and continue using the current value. Fixed in 8.0.x for 8.0.13 onwards and in 7.0.x for 7.0.56 onwards. |
use apr connector set maxConnections="-1" in server.xml when start tomcat, exceptions occur: java.lang.NegativeArraySizeException at org.apache.tomcat.util.net.AprEndpoint$SocketTimeouts.<init>(AprEndpoint.java:1145) at org.apache.tomcat.util.net.AprEndpoint$Poller.init(AprEndpoint.java:1382) at org.apache.tomcat.util.net.AprEndpoint.startInternal(AprEndpoint.java:602) at org.apache.tomcat.util.net.AbstractEndpoint.start(AbstractEndpoint.java:650) at org.apache.coyote.AbstractProtocol.start(AbstractProtocol.java:449) at org.apache.catalina.connector.Connector.startInternal(Connector.java:1007) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.StandardService.startInternal(StandardService.java:459) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:731) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.startup.Catalina.start(Catalina.java:689) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:606) at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:321) at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:455) In AprEndpoint.init() method： protected void init() { pool = Pool.create(serverSockPool); // Single poller by default int defaultPollerSize = getMaxConnections(); if ((OS.IS_WIN32 || OS.IS_WIN64) && (defaultPollerSize > 1024)) { // The maximum per poller to get reasonable performance is 1024 // Adjust poller size so that it won't reach the limit. This is // a limitation of XP / Server 2003 that has been fixed in // Vista / Server 2008 onwards. actualPollerSize = 1024; } else { actualPollerSize = defaultPollerSize; } timeouts = new SocketTimeouts(defaultPollerSize); //here !!! did not check getMaxConnections() maybe return -1.