Threads are queued up waiting on org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$ConnectionPool

Issue

• Threads are queued up waiting on org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$ConnectionPool

at java.lang.Object.wait(Native Method)
 - waiting on <0x91a77dc8> (a
org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$ConnectionPool) at
org.apache.commons.httpclient.MultiThreadedHttpConnectionManager.doGetConnection(MultiThreadedHttpConnectionManager.java:509)
 - locked <0x91a77dc8> (a
org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$ConnectionPool) at
org.apache.commons.httpclient.MultiThreadedHttpConnectionManager.getConnectionWithTimeout(MultiThreadedHttpConnectionManager.java:394) at
org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:152) at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:396) at
org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:346)

• Logging errors with the following in the stack trace:

...
Caused by: org.apache.commons.httpclient.ConnectionPoolTimeoutException: Timeout waiting for connection
        at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager.doGetConnection(MultiThreadedHttpConnectionManager.java:497)
        at 
...