Description Chris Dumoulin 2011-09-26 14:56:04 EDT

Build Identifier: 7.2.0v20101020

A java.nio.channels.UnresolvedAddressException during a call to HttpClient.send() results in a file descriptor leak which eventually leads to "Too many open files" errors.

In a production application, I was seeing the following exceptions which were resulting in file descriptor leaks:

java.nio.channels.UnresolvedAddressException 
        at sun.nio.ch.Net.checkAddress(Net.java:30) 
        at sun.nio.ch.SocketChannelImpl.connect(SocketChannelImpl.java:480) 
        at org.eclipse.jetty.client.SelectConnector.startConnection(SelectConnector.java:143) 
        at org.eclipse.jetty.client.HttpDestination.startNewConnection(HttpDestination.java:254) 
        at org.eclipse.jetty.client.HttpDestination.doSend(HttpDestination.java:548) 
        at org.eclipse.jetty.client.HttpDestination.send(HttpDestination.java:489) 
        at org.eclipse.jetty.client.HttpClient.send(HttpClient.java:148)

I created a test application that I'll attach which reproduces the problem. While the test application is running use "lsof -p <pid>|wc -l" to see the number of open files for the process. The number of open files will grow with each send() attempt until eventually you get "Too many open files" errors.


Reproducible: Always

Steps to Reproduce:
1. Run the attached UnresolvedAddressTest
2. Use lsof to see the open files for the process
3. Notice that the number of open files increases with each loop iteration