hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Jeffrey Zhong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8251) enable SSH before assign META on Master startup
Date Mon, 08 Apr 2013 02:37:17 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8251?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13625095#comment-13625095
] 

Jeffrey Zhong commented on HBASE-8251:
--------------------------------------

Oh, I c. You changed the existing logic. For example, the above check is within the {code}if
(!rit && !metaRegionLocation) {{code}
Old logic will offline the meta server if it's online and re-assign meta while the patch skips
meta assignment. I'm not sure if it's a good modification for scenario that a Meta location
is pointing to an offline server or a wrong server.




                
> enable SSH before assign META on Master startup
> -----------------------------------------------
>
>                 Key: HBASE-8251
>                 URL: https://issues.apache.org/jira/browse/HBASE-8251
>             Project: HBase
>          Issue Type: Bug
>          Components: master, Region Assignment
>    Affects Versions: 0.94.6
>            Reporter: Jieshan Bean
>            Assignee: Jieshan Bean
>         Attachments: HBASE-8251-94.patch, HBASE-8251-94-v2.patch
>
>
> I think HBASE-5918 could not fix this issue. In HMaster#assignRootAndMeta:
> 1. Assign ROOT.
> 2. Block until ROOT be opened.
> 3. Assign META.
> 4. Block until META be opened.
> SSH is enabled after step 4. So if the RS who host ROOT dies before step 4, master will
be blocked.

--
This message is automatically generated by JIRA.
If you think it was sent incorrectly, please contact your JIRA administrators
For more information on JIRA, see: http://www.atlassian.com/software/jira

Mime
View raw message