[HBASE-10123] Change default ports; move them out of linux ephemeral port range - ASF JIRA

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Details

Type: Bug
Status: Closed
Priority: Critical
Resolution: Fixed
Affects Version/s: 0.96.1.1
Fix Version/s: 0.99.0
Component/s: None
Labels:
None

Hadoop Flags:

Incompatible change, Reviewed
Release Note:

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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

To set the old defaults you can add this to your hbase-site.xml:

<property >
    <name>hbase.master.port</name>
    <value>60000</value>
  </property>
  <property>
    <name>hbase.master.info.port</name>
    <value>60010</value>
  </property>
  <property>
    <name>hbase.regionserver.port</name>
    <value>60020</value>
  </property>
  <property>
    <name>hbase.regionserver.info.port</name>
    <value>60030</value>
  </property>


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.

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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 To set the old defaults you can add this to your hbase-site.xml: <property >     <name>hbase.master.port</name>     <value>60000</value>   </property>   <property>     <name>hbase.master.info.port</name>     <value>60010</value>   </property>   <property>     <name>hbase.regionserver.port</name>     <value>60020</value>   </property>   <property>     <name>hbase.regionserver.info.port</name>     <value>60030</value>   </property>    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.

Description

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