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Posted to common-issues@hadoop.apache.org by "Daryn Sharp (JIRA)" <ji...@apache.org> on 2018/11/02 17:18:00 UTC

[jira] [Created] (HADOOP-15897) Port range binding fails due to socket bind race condition

Daryn Sharp created HADOOP-15897:
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             Summary: 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


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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