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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HADOOP-15897) Port range binding fails due to socket bind race condition
Date Fri, 02 Nov 2018 20:09:00 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-15897?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Daryn Sharp updated HADOOP-15897:
---------------------------------
    Status: Patch Available  (was: Open)

> Port range binding fails due to socket bind race condition
> ----------------------------------------------------------
>
>                 Key: HADOOP-15897
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15897
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: ipc
>    Affects Versions: 2.0.2-alpha
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Major
>         Attachments: HADOOP-15897.patch
>
>
> Java's {{ServerSocket#bind}} does both a bind and listen. At a system level, multiple
processes may bind to the same port but only one may listen. Java sockets are left in an unrecoverable
state when a process loses the race to listen first.
> Servers that compete over a listening port range (ex. App Master) will fail the entire
range after a collision.  The IPC layer should make a better effort to recover from failed
binds.



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