Hi Dan,

We are using apache web server provided along with RHEL.So I believe we are
getting back port fixes.
In the threaddump we are seeing the below long running threads many times.As
mentioned, we are using AJP(with BIO) and tomacat 7.0.52. I wanted to know
if this will cause any issues like system hung over a period of time. Also
we are thinking of NIO protocol instead of BIO for AJP


"ajp-bio-10.181.42.51-9011-exec-112" daemon prio=10 tid=0x00000000161aa000
nid=0x776c runnable [0x00002b23c3c64000]
   java.lang.Thread.State: RUNNABLE
        at java.net.SocketInputStream.socketRead0(Native Method)
        at java.net.SocketInputStream.read(SocketInputStream.java:152)
        at java.net.SocketInputStream.read(SocketInputStream.java:122)
        at org.apache.coyote.ajp.AjpProcessor.read(AjpProcessor.java:309)
        at org.apache.coyote.ajp.AjpProcessor.readMessage(AjpProcessor.java:364)
        at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:121)
        at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
        at
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
        - locked <0x00000007b25a5b58> (a 
org.apache.tomcat.util.net.SocketWrapper)
        at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
        at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
        at java.lang.Thread.run(Thread.java:744)

   Locked ownable synchronizers:
        - <0x00000007b25e7618> (a 
java.util.concurrent.ThreadPoolExecutor$Worker)

Regards,
Ravi





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