[jira] [Closed] (TS-1916) There are cases where hostdb does not reference a ttl of nameserver.

["Susan Hinrichs (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TS-1916?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Susan Hinrichs closed TS-1916.
------------------------------
    Resolution: Cannot Reproduce

Unclear from the description what exactly is happening.  James says that the code appears to be doing the right thing.  Will reopen if this is still being seen.

> There are cases where hostdb does not reference a ttl of nameserver.
> --------------------------------------------------------------------
>
>                 Key: TS-1916
>                 URL: https://issues.apache.org/jira/browse/TS-1916
>             Project: Traffic Server
>          Issue Type: Bug
>          Components: DNS
>            Reporter: ishioka keiichi
>             Fix For: sometime
>
>
>    hostdb  is set as follows: 
>    CONFIG proxy.config.hostdb.ttl_mode INT 0
>    CONFIG proxy.config.hostdb.timeout INT 1
>    
>    If response of dns  the next,ATS queries the DNS every 30 seconds.
>    
>    $ dig foo.bar.com. A
>     ;; ANSWER SECTION:
>     foo.bar.com. 30 IN A 10.10.10.1
>     
>    If ttl is reduced as follow:, ATS will query the DNS every 10 seconds.
>   
>     $ dig foo.bar.com. A
>      ;; ANSWER SECTION:
>      foo.bar.com. 300 IN A 10.10.10.1 
>   
>    However, if it increased the value of ttl, ATS has continued to query DNS every 10 seconds.
>     
>     $ dig foo.bar.com. A
>      ;; ANSWER SECTION:
>      foo.bar.com. 300 IN A 10.10.10.1
>   
>   However, is adapted then HUP the traffic_server...
>   Why??
>   



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