https://issues.apache.org/bugzilla/show_bug.cgi?id=56684
Bug ID: 56684
Summary: java7: java.net.SocketTimeoutException: Accept timed
out
Product: Tomcat 6
Version: 6.0.39
Hardware: PC
OS: Linux
Status: NEW
Severity: major
Priority: P2
Component: Catalina
Assignee: dev@tomcat.apache.org
Reporter: gust...@thehyve.nl
After upgrading to Java 7, I've noticed some applications fail after about 50
days f (for instance May 8 till June 27). This is suspiciously close to 2 ^ 32
-1 milliseconds:
Jun 27, 2014 9:24:47 AM org.apache.catalina.core.StandardServer await
SEVERE: StandardServer.await: accept:
java.net.SocketTimeoutException: Accept timed out
at java.net.PlainSocketImpl.socketAccept(Native Method)
at
java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:398)
at java.net.ServerSocket.implAccept(ServerSocket.java:530)
at java.net.ServerSocket.accept(ServerSocket.java:498)
at
org.apache.catalina.core.StandardServer.await(StandardServer.java:431)
at org.apache.catalina.startup.Catalina.await(Catalina.java:676)
at org.apache.catalina.startup.Catalina.start(Catalina.java:628)
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:289)
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:414)
Jun 27, 2014 9:24:47 AM org.apache.coyote.http11.Http11AprProtocol pause
INFO: Pausing Coyote HTTP/1.1 on http-51080
Jun 27, 2014 9:24:47 AM org.apache.coyote.ajp.AjpAprProtocol pause
INFO: Pausing Coyote AJP/1.3 on ajp-51009
Jun 27, 2014 9:24:48 AM org.apache.catalina.core.StandardService stop
INFO: Stopping service Catalina
After this, the application is no longer listening.
I suspect this may be due to a change in behavior in Java. See:
$ $JAVA_HOME/bin/java -version
java version "1.7.0_60"
Java(TM) SE Runtime Environment (build 1.7.0_60-b19)
Java HotSpot(TM) 64-Bit Server VM (build 24.60-b09, mixed mode)
$ strace -f -o /tmp/hh groovy -e 'new ServerSocket(60001, 1,
InetAddress.getByName("localhost")).accept()'
File contains:
2212 bind(47, {sa_family=AF_INET6, sin6_port=htons(60001), inet_pton(AF_INET6,
"::ffff:127.0.0.1", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = 0
2212 listen(47, 1) = 0
2212 poll([{fd=47, events=POLLIN|POLLERR}], 1, 4294967295 <unfinished ...>
$ $JAVA_HOME/bin/java -version
java version "1.6.0_45"
Java(TM) SE Runtime Environment (build 1.6.0_45-b06)
Java HotSpot(TM) 64-Bit Server VM (build 20.45-b01, mixed mode)
2661 bind(46, {sa_family=AF_INET6, sin6_port=htons(60001), inet_pton(AF_INET6,
"::ffff:127.0.0.1", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = 0
2661 listen(46, 1) = 0
2661 accept(46, <unfinished ...>
While java6 calls accept(), java7 first waits for an event on the socket with
poll(). However, it uses a timeout of 4294967295 milliseconds.
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