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From "Josh Elser (JIRA)" <j...@apache.org>
Subject [jira] [Created] (ACCUMULO-3921) Move fixed server ports out of ephemeral port range
Date Thu, 25 Jun 2015 17:54:05 GMT
Josh Elser created ACCUMULO-3921:
------------------------------------

             Summary: Move fixed server ports out of ephemeral port range
                 Key: ACCUMULO-3921
                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3921
             Project: Accumulo
          Issue Type: Improvement
          Components: gc, master, monitor, trace, tserver
            Reporter: Josh Elser
            Priority: Critical
             Fix For: 1.8.0


During some recent testing, we ran into a case where the monitor failed to restart. Looking
at the logs after the fact (it was an automated test), the monitor died because it couldn't
bind to 50095.

The likely problem is that the datanode or namenode happened to grab that port because it's
in the ephemeral range which is commonly 32768-61000 (per [wikipedia|https://en.wikipedia.org/wiki/Ephemeral_port]).

It would be good to give our ports a once-over and start to push towards better default values.
This has been a problem for us for quite some time.



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