https://issues.apache.org/bugzilla/show_bug.cgi?id=56827
Bug ID: 56827
Summary: Writer threads are getting stuck when using APR/AJP
Product: Tomcat 7
Version: 7.0.55
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Connectors
Assignee: [email protected]
Reporter: [email protected]
Writer threads are getting blocked by APR/AJP implementation, this was not
happening on Tomcat 7.0.54, when we upgrade we recompile the APR using the
existing Tomcat and environment, for our case Ubuntu Server 12.04 LTS:
Threads stuck using probe webapp:
stop 252 async-streaming-executor-20
org.apache.tomcat.util.net.AprEndpoint.processSocketAsync (
AprEndpoint.java:860 ) BLOCKED false false 1821 1
stop 251 async-streaming-executor-19
org.apache.tomcat.util.net.AprEndpoint.processSocketAsync (
AprEndpoint.java:860 ) BLOCKED false false 772 1
stop 227 async-streaming-executor-4
org.apache.tomcat.util.net.AprEndpoint.processSocketAsync (
AprEndpoint.java:860 ) BLOCKED false false 2524 2
Stack trace of blocking code:
org.apache.tomcat.util.net.AprEndpoint.processSocketAsync (
AprEndpoint.java:860 )
org.apache.coyote.AbstractProcessor.setErrorState ( AbstractProcessor.java:84 )
org.apache.coyote.ajp.AbstractAjpProcessor.action (
AbstractAjpProcessor.java:368 )
org.apache.coyote.Response.action ( Response.java:174 )
org.apache.coyote.Response.finish ( Response.java:274 )
org.apache.catalina.connector.OutputBuffer.close ( OutputBuffer.java:319 )
org.apache.catalina.connector.CoyoteOutputStream.close (
CoyoteOutputStream.java:108 )
org.apache.commons.io.IOUtils.closeQuietly ( IOUtils.java:303 )
org.apache.commons.io.IOUtils.closeQuietly ( IOUtils.java:274 )
com.temetra.wms.utils.filter.QueueOutputStream$1.call (
QueueOutputStream.java:93 )
com.temetra.wms.utils.filter.QueueOutputStream$1.call (
QueueOutputStream.java:79 )
java.util.concurrent.FutureTask.run ( FutureTask.java:262 )
java.util.concurrent.ThreadPoolExecutor.runWorker (
ThreadPoolExecutor.java:1145 )
java.util.concurrent.ThreadPoolExecutor$Worker.run (
ThreadPoolExecutor.java:615 )
java.lang.Thread.run ( Thread.java:745 )
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