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

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/TS-4228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15180640#comment-15180640 ] 

ASF GitHub Bot commented on TS-4228:
------------------------------------

Github user zwoop closed the pull request at:

    https://github.com/apache/trafficserver/pull/500


> 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
>            Assignee: Leif Hedstrom
>              Labels: A
>             Fix For: 6.1.2, 6.2.0
>
>
> 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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