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Posted to issues@trafficserver.apache.org by "Leif Hedstrom (JIRA)" <ji...@apache.org> on 2016/02/25 01:47:18 UTC

[jira] [Created] (TS-4228) traffic_manager can hang in a tight read() loop

Leif Hedstrom created TS-4228:
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             Summary: traffic_manager can hang in a tight read() loop 
                 Key: TS-4228
                 URL: https://issues.apache.org/jira/browse/TS-4228
             Project: Traffic Server
          Issue Type: Bug
          Components: Manager
            Reporter: Leif Hedstrom


Under certain conditions, traffic_server does not seem to proxy the cop health check properly to the traffic_manager. Due to poor error handling in the manager thread, this can cause it to run indefinitely in a read() loop.

I think we should strengthen the code in manager, to check FD with a poll() before every read and write, and allow it to fail after a certain timeout (based on Cop's behavior) such that at least we end up killing the request and manager thread.



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