hadoop-hdfs-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Justin Joseph (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2354) Generalize the HAServiceProtocol interface
Date Wed, 26 Oct 2011 14:15:32 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2354?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13136006#comment-13136006

Justin Joseph commented on HDFS-2354:

For better understanding of Backup Node based HA with Zookeeper as the distributed coordinator,
please refer the [Namenode HA using Backup Namenode as Hot Standby.pdf|https://issues.apache.org/jira/secure/attachment/12500829/Namenode+HA+using+Backup+Namenode+as+Hot+Standby.pdf]
I have attached in this JIRA.
> Generalize the HAServiceProtocol interface
> ------------------------------------------
>                 Key: HDFS-2354
>                 URL: https://issues.apache.org/jira/browse/HDFS-2354
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: name-node
>            Reporter: Justin Joseph
>            Assignee: Justin Joseph
>         Attachments: HAService_fw_Class_Diagram.JPG, HDFS-2354.1.patch, HDFS-2354.patch,
Namenode HA using Backup Namenode as Hot Standby.pdf
> This JIRA intends to revisit the patches committed for HADOOP-7455 and HDFS-1974 &
to provide more generic interfaces which allows alternative HA implementations to co-exist
complying with HAServiceProtocol.
> Some of the considerations are
> 1) Support life cycle methods (start*() and stop() APIs) in HAServiceProtocol
> 2) Support custom states in HAServiceProtocol
> 3) As per the patch submitted for HDFS-1974, Namenode implements HAService interface.
This needs to be reconsidered.
> I will elaborate on these points, in the form of comments below.

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


View raw message