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https://issues.apache.org/jira/browse/HBASE-11370?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14043645#comment-14043645
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Jimmy Xiang commented on HBASE-11370:
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Good questions. At first, for the new column sn, if useZK=true, this column is
not created. If useZK=false, column sn may have different value than column
server. We should have just one column. The reason we have two is for support
old clients. During migration (useZK true => false), we need both column sn and
server. Probably, it is better to keep the column name "sn" since in the
future, we can deprecate column "server".
bq. I think regionAssignments should only be updated for State.Open not for all
other cases.
You are right. I meant to update the serverHoldings only (so that it has the
same info as the meta for SSH purpose). Let me fix it.
> SSH doesn't need to scan meta if not using ZK for assignment
> ------------------------------------------------------------
>
> Key: HBASE-11370
> URL: https://issues.apache.org/jira/browse/HBASE-11370
> Project: HBase
> Issue Type: Improvement
> Reporter: Jimmy Xiang
> Assignee: Jimmy Xiang
> Priority: Minor
> Fix For: 0.99.0
>
> Attachments: hbase-11370.patch
>
>
> If we don't use ZK for assignment, the meta content should be the same as
> that in memory. So we should be able to avoid a meta scan.
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