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From "Jimmy Xiang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6381) AssignmentManager should use the same logic for clean startup and failover
Date Sat, 21 Jul 2012 21:19:35 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13419951#comment-13419951
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Jimmy Xiang commented on HBASE-6381:
------------------------------------

@Ram, currently, I was thinking about three changes.  I need to make sure they are good.
1. for the failover case, let SSH take case of those dead region servers so that we can share
some code instead of doing some similar things in AM and SSH.
2. SSH is enabled so that we can handle meta/root region server failure before joinCluster
is completed.  However, we can hold SSH a little bit
for the user region assignments.  So in AM, we can avoid failoverProcessedRegions which is
a little bit confusing.
3. those enablingTables and disablingTables, they should be some local variables. We can load
them from ZKTable at the beginning instead of
handling them per table.
                
> AssignmentManager should use the same logic for clean startup and failover
> --------------------------------------------------------------------------
>
>                 Key: HBASE-6381
>                 URL: https://issues.apache.org/jira/browse/HBASE-6381
>             Project: HBase
>          Issue Type: Bug
>          Components: master
>            Reporter: Jimmy Xiang
>            Assignee: Jimmy Xiang
>
> Currently AssignmentManager handles clean startup and failover very differently.
> Different logic is mingled together so it is hard to find out which is for which.
> We should clean it up and share the same logic so that AssignmentManager handles
> both cases the same way.  This way, the code will much easier to understand and
> maintain.

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