hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Todd Lipcon (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HADOOP-8212) Improve ActiveStandbyElector's behavior when session expires
Date Thu, 29 Mar 2012 21:49:27 GMT

     [ https://issues.apache.org/jira/browse/HADOOP-8212?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Todd Lipcon resolved HADOOP-8212.
---------------------------------

          Resolution: Fixed
       Fix Version/s:     (was: 2.0.0)
                      Auto Failover (HDFS-3042)
    Target Version/s: Auto Failover (HDFS-3042)  (was: 0.24.0, 0.23.3, Auto Failover (HDFS-3042))
    
> Improve ActiveStandbyElector's behavior when session expires
> ------------------------------------------------------------
>
>                 Key: HADOOP-8212
>                 URL: https://issues.apache.org/jira/browse/HADOOP-8212
>             Project: Hadoop Common
>          Issue Type: Improvement
>    Affects Versions: 0.23.3, 0.24.0
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: Auto Failover (HDFS-3042)
>
>         Attachments: hadoop-8212-delta-bikas.txt, hadoop-8212.txt, hadoop-8212.txt
>
>
> Currently when the ZK session expires, it results in a fatal error being sent to the
application callback. This is not the best behavior -- for example, in the case of HA, if
ZK goes down, we would like the current state to be maintained, rather than causing either
NN to abort. When the ZK clients are able to reconnect, they should sort out the correct leader
based on the normal locking schemes.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators: https://issues.apache.org/jira/secure/ContactAdministrators!default.jspa
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message