And I executed a command:lsof -i :9999
There is nothing, no listener. It's a problem. But it was configed in 
tez-site.xml:
<property>
  <description>URL for where the Tez UI is hosted</description>
  <!--tomcat 9999 port-->
  <name>tez.tez-ui.history-url.base</name>
  <value>http://server2:9999/tez-ui/</value>
 </property>


At 2016-03-05 14:55:00, "Maria" <[email protected]> wrote:
>Hello,respected experts:
>    My hadoop version is 2.6.0, tez version is 0.7.0. 
>    I  install tez ui by following the installation instructions: 
> http://tez.apache.org/tez-ui.html.
>    Tomcat 8080 is well to visit, but I cann't open 
> http://server2:9999/tez-ui/ or links from RM 8088 history.  I don't know 
> why,can you please give a little guidance? where can I find logs about tez ui?
>
>Any help, suggestions, are greatly appreciated!
>
>Orchid.

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