https://bz.apache.org/bugzilla/show_bug.cgi?id=58157
Bug ID: 58157
Summary: RecycleRequiredException and missing
AsyncListener.onTimeout call
Product: Tomcat 7
Version: 7.0.59
Hardware: PC
Status: NEW
Severity: normal
Priority: P2
Component: Catalina
Assignee: [email protected]
Reporter: [email protected]
Created attachment 32916
--> https://bz.apache.org/bugzilla/attachment.cgi?id=32916&action=edit
Servlet which starts asynchronous processing and intentionally waits for a
timeout before dispatching to a static HTML file.
Overview:
When repeatedly polling an asynchronous servlet which (intentionally) times
out, I occasionally see the following exception in the console:
Jul 20, 2015 8:58:45 AM org.apache.catalina.connector.CoyoteAdapter
checkRecycled
INFO: Encountered a non-recycled request and recycled it forcedly.
org.apache.catalina.connector.CoyoteAdapter$RecycleRequiredException
at
org.apache.catalina.connector.CoyoteAdapter.checkRecycled(CoyoteAdapter.java:590)
at
org.apache.coyote.http11.AbstractHttp11Processor.recycle(AbstractHttp11Processor.java:1809)
at
org.apache.coyote.http11.Http11NioProtocol$Http11ConnectionHandler.release(Http11NioProtocol.java:199)
at
org.apache.tomcat.util.net.NioEndpoint$Poller.cancelledKey(NioEndpoint.java:1100)
at
org.apache.tomcat.util.net.NioEndpoint$Poller.timeout(NioEndpoint.java:1466)
at org.apache.tomcat.util.net.NioEndpoint$Poller.run(NioEndpoint.java:1234)
at java.lang.Thread.run(Thread.java:745)
This coincides with a request not receiving any response.
The majority of times the servlet is called, the correct response is returned
as expected once the request times out, however on occasion (sometimes within 1
min, sometimes not until 30 mins of successful requests have passed) I see this
exception and AsyncListener.onTimeout() is never called to produce the
response.
Steps to reproduce:
0) Configure Tomcat to use the NIO connector
1) Deploy the attached TimeoutServlet (note: add a static HTML page
'timeout.html' to the root of the web application to serve as the timeout
response).
2) Using a tool of your choice (I used JMeter), repeatedly send a request to
the servlet and wait for the timeout response before sending the next request.
Actual Results:
Eventually, one of the requests will receive no response and the above
exception will be written to the console.
Expected Results:
Every request should receive the timeout response (timeout.html) after 1 second
and no exception should appear in the console.
Additional Information:
Appears to be very similar to
https://bz.apache.org/bugzilla/show_bug.cgi?id=57011.
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