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From "Jonathan Hsieh (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-10123) Change default ports; move them out of linux ephemeral port range
Date Fri, 17 Jan 2014 17:36:23 GMT

     [ https://issues.apache.org/jira/browse/HBASE-10123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jonathan Hsieh updated HBASE-10123:
-----------------------------------

    Release Note: 
After 0.98 hbase's default ports have changed to be outside of the ephemeral port range:.

hbase.master.port :  60000 -> 16000
hbase.master.info.port (http): 60010 -> 16010
hbase.regionserver.port : 60020 -> 16020
hbase.regionserver.info.port (http): 60030 -> 16030
hbase.status.multicast.port : 60100 -> 16100

HBase up to and including 0.98.x chose default tcp ports in the 600xx port range which conflicts
with the standard unix/linux ephmeral port range of 49152-65535 or 32768-61000.  This meant
if any other processes chose to bind to a os specified port it could bind to the ports that
hbase had as default.  If hbase processes were restarted some hbase nodes would fail to start.
 The probability of this happening increases as the number of nodes in the cluster increases.

    Hadoop Flags: Incompatible change,Reviewed

> Change default ports; move them out of linux ephemeral port range
> -----------------------------------------------------------------
>
>                 Key: HBASE-10123
>                 URL: https://issues.apache.org/jira/browse/HBASE-10123
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.96.1.1
>            Reporter: stack
>            Assignee: Jonathan Hsieh
>            Priority: Critical
>             Fix For: 0.98.0
>
>         Attachments: hbase-10123.patch, hbase-10123.v2.patch, hbase-10123.v3.patch, hbase-10123.v4.patch
>
>
> Our defaults clash w/ the range linux assigns itself for creating come-and-go ephemeral
ports; likely in our history we've clashed w/ a random, short-lived process.  While easy to
change the defaults, we should just ship w/ defaults that make sense.  We could host ourselves
up into the 7 or 8k range.
> See http://www.ncftp.com/ncftpd/doc/misc/ephemeral_ports.html



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