hbase-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Issue Comment Edited] (HBASE-4213) Support instant schema updates with out master's intervention (i.e with out enable/disable and bulk assign/unassign)
Date Wed, 17 Aug 2011 14:48:29 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13086356#comment-13086356
] 

Ted Yu edited comment on HBASE-4213 at 8/17/11 2:47 PM:
--------------------------------------------------------

I haven't gone through the patch yet.
bq. 5. Master will recursively delete the node /hbase/schema/<table name>, if the number
of childrens of /hbase/schema/<table name> is greater than or equal to current number
of active region servers.
You meant recursively deleting the children of node /hbase/schema/<table name>, right
?

For region server which joins the cluster after the creation of /hbase/schema/<table name>,
it should be able to find out that it already reads the most recent HTD. Does it create a
child node under /hbase/schema/<table name> ?

      was (Author: yuzhihong@gmail.com):
    I haven't gone through the patch yet.
bq. 5. Master will recursively delete the node /hbase/schema/<table name>, if the number
of childrens
  of /hbase/schema/<table name> is greater than or equal to current number of active
region servers.
You meant recursively deleting the children of node /hbase/schema/<table name>, right
?

For region server which joins the cluster after the creation of /hbase/schema/<table name>,
it should be able to find out that it already reads the most recent HTD. Does it create a
child node under /hbase/schema/<table name> ?
  
> Support instant schema updates with out master's intervention (i.e with out enable/disable
and bulk assign/unassign)
> --------------------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-4213
>                 URL: https://issues.apache.org/jira/browse/HBASE-4213
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Subbu M Iyer
>            Assignee: Subbu M Iyer
>         Attachments: HBASE-4213-Instant_schema_change.patch
>
>
> This Jira is a slight variation in approach to what is being done as part of 
> https://issues.apache.org/jira/browse/HBASE-1730
> Support instant schema updates such as Modify Table, Add Column, Modify Column operations:
> 1. With out enable/disabling the table.
> 2. With out bulk unassign/assign of regions.

--
This message is automatically generated by JIRA.
For more information on JIRA, see: http://www.atlassian.com/software/jira

        

Mime
View raw message