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From "Xiaolin Ha (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-19326) Remove decommissioned servers from rsgroup
Date Mon, 12 Feb 2018 03:12:00 GMT

    [ https://issues.apache.org/jira/browse/HBASE-19326?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16360247#comment-16360247
] 

Xiaolin Ha commented on HBASE-19326:
------------------------------------

[~andrewcheng][~stack]
In docs it said that 'The default group is not like other rsgroups in that it is dynamic.
Its server list mirrors the current
state of the cluster; i.e. if you shutdown a server that was part of the default rsgroup,
and then do a
get_rsgroup default to list its content in the shell, the server will no longer be listed.
For non-default
groups, though a mode may be offline, it will persist in the non-default group’s list of
servers. But if
you move the offline server from the non-default rsgroup to default, it will not show in the
default
list. It will just be dropped.'

But when a regionserver is dead and master is restarted, the regionserver can be removed from
the non-default rsgroup too.
Is this conflict with the doc? Do you think dead regionservers can be removed either?



> Remove decommissioned servers from rsgroup
> ------------------------------------------
>
>                 Key: HBASE-19326
>                 URL: https://issues.apache.org/jira/browse/HBASE-19326
>             Project: HBase
>          Issue Type: New Feature
>          Components: rsgroup
>    Affects Versions: 3.0.0, 2.0.0-beta-2
>            Reporter: Guangxu Cheng
>            Assignee: Guangxu Cheng
>            Priority: Major
>             Fix For: 1.4.0, 2.0.0-beta-1
>
>         Attachments: HBASE-19326-branch-1.patch, HBASE-19326.branch-2.001.patch, HBASE-19326.master.001.patch,
HBASE-19326.master.002.patch, HBASE-19326.master.003.patch, HBASE-19326.master.004.patch,
HBASE-19326.master.005.patch
>
>
> In HBASE-18131, we add an hbase shell command {{clear_deadservers}} to clear deadserver
list in ServerManager.
> But rsgroup still contains these dead servers, so we should also remove dead servers
from the group information.



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