1 2 Previous Next 16 Replies Latest reply on Jan 4, 2012 2:34 PM by Alexey Syomichev

    Error messages from 1.1.0.Final HTTPD/Tomcat 6.0.20

    Edwin Babadaglian Newbie



      During a mild load-test against a custom application I see scattered occurrences of the following HTTPD log entries:



      [error] ajp_cping_cpong: awaited CPONG, received 41 42 00 04 03


      [error] ajp_handle_cping_cpong: awaited CPONG, received 3


      [error] (20014)Internal error: proxy: AJP: cping/cpong failed to (


      [error] proxy: CLUSTER: (balancer://ABB-ApplicationRequestRouter). All workers are in error state



      My test client runs a request-loop with a 10sec delay between requests, yet these errors appear which sets the node status to 'NOTOK, returning 503'. A few inactive seconds later, the status reverts to 'OK'. I have yet to examine Tomcat logs to investigate, but what observations can be made from the CPONG errors listed above?


      It appears that ping-pong, initiated from HTTPD, produces undesirable results. Either a connection/response timeout or something on the application's side is the cause, I haven't ruled out anything yet.



      Many thanks,


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