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https://issues.apache.org/jira/browse/HADOOP-6760?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12866373#action_12866373
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Konstantin Boudnik commented on HADOOP-6760:
--------------------------------------------
Yes, Eli. This seems to be a valid simplification. We are seeing quite a bunch
of -1 ports on our production clusters. And the workaround for HADOOP-6386 was
trying to address it. I guess it has done a pretty good job however increasing
the port was wrong.
Two workarounds exist for a purpose, actually. First one HADOOP-4744 is about
getting a negative port as the result of initial {{getLocalPort()}} call.
However, what we are seeing sometime is that {{getLocalPort()}} can get you a
positive number and then when you are trying to bind to it you are getting
{{IllegalArgumentException}} because the port is actually negative.... It is
apparently caused by some crazy race in Jetty. Therefore, the workaround #2
which verifies if allocated port is actually positive and if isn't it engage
all that voodoo ...
So, I believe your simplification won't address the second issue... Please
correct me if I'm wrong.
> WebServer shouldn't increase port number in case of negative port setting
> caused by Jetty's race
> ------------------------------------------------------------------------------------------------
>
> Key: HADOOP-6760
> URL: https://issues.apache.org/jira/browse/HADOOP-6760
> Project: Hadoop Common
> Issue Type: Bug
> Affects Versions: 0.20.3
> Reporter: Konstantin Boudnik
> Assignee: Konstantin Boudnik
> Attachments: HADOOP-6760.0.20.patch, HADOOP-6760.patch
>
>
> When a negative port is assigned to a webserver socket (because of a race
> inside of the Jetty server) the workaround from HADOOP-6386 is increasing the
> original port number on the next bind attempt. Apparently, this is an
> incorrect logic and next bind attempt should happen on the same port number
> if possible.
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