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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-3909) Add dynamic config
Date Fri, 20 May 2011 22:59:47 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3909?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13037141#comment-13037141
] 

Ted Yu commented on HBASE-3909:
-------------------------------

I went over HADOOP-7001.5.patch
We have the following decision to make:
1. HADOOP-7001 is in trunk only. Are we going to pull the interface/base class/util class
over to hbase ?
2. ReconfigurationServlet would be convenient for admin to use. Are we going to support reloading
conf from hbase shell ?
3. HADOOP-7001 provides fine-grained property reconfig through reconfigurePropertyImpl() calls.
Shall we also provide coarse-grained property reconfig mechanism ? e.g. we can notify AssignmentManager
of the properties it uses whose values have just changed. This mechanism is also related to
getReconfigurableProperties(). I think HMaster, AssignmentManager, etc would all extend ReconfigurableBase.

> Add dynamic config
> ------------------
>
>                 Key: HBASE-3909
>                 URL: https://issues.apache.org/jira/browse/HBASE-3909
>             Project: HBase
>          Issue Type: Bug
>            Reporter: stack
>
> I'm sure this issue exists already, at least as part of the discussion around making
online schema edits possible, but no hard this having its own issue.  Ted started a conversation
on this topic up on dev and Todd suggested we lookd at how Hadoop did it over in HADOOP-7001

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