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https://issues.apache.org/jira/browse/HBASE-9457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13767939#comment-13767939
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Francis Liu commented on HBASE-9457:
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I'm +1. Tho I'm wondering are there any backwards compatibility gotchas if when
we move namespace table from one wal to another? It seems we could just flush
the namespace table and perform rolling restart to do an upgrade.
> Master could fail start if region server with system table is down
> ------------------------------------------------------------------
>
> Key: HBASE-9457
> URL: https://issues.apache.org/jira/browse/HBASE-9457
> Project: HBase
> Issue Type: Bug
> Components: master, Region Assignment
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
> Priority: Critical
> Attachments: trunk-9457.patch, trunk-9457_v2.1.patch,
> trunk-9457_v2.2.patch, trunk-9457_v2.patch
>
>
> In the region server holding the system table is killed while master is
> starting, master will hang there waiting for system table to be assigned
> which won't happen.
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