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Posted to issues@hbase.apache.org by "Duo Zhang (JIRA)" <ji...@apache.org> on 2018/11/20 10:05:01 UTC
[jira] [Assigned] (HBASE-21154) Remove hbase:namespace table; fold
it into hbase:meta
[ https://issues.apache.org/jira/browse/HBASE-21154?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Duo Zhang reassigned HBASE-21154:
---------------------------------
Assignee: Duo Zhang
> Remove hbase:namespace table; fold it into hbase:meta
> -----------------------------------------------------
>
> Key: HBASE-21154
> URL: https://issues.apache.org/jira/browse/HBASE-21154
> Project: HBase
> Issue Type: Improvement
> Components: meta
> Reporter: stack
> Assignee: Duo Zhang
> Priority: Major
> Attachments: HBASE-21154.patch
>
>
> Namespace table is a small system table. Usually it has two rows. It must be assigned before user tables but after hbase:meta goes out. Its presence complicates our startup and is a constant source of grief when for whatever reason, it is not up and available. In fact, master startup is predicated on hbase:namespace being assigned and will not make progress unless it is up.
> Lets just add a new 'ns' column family to hbase:meta for namespace.
> Here is a default ns table content:
> {code}
> hbase(main):023:0* scan 'hbase:namespace'
> ROW COLUMN+CELL
> default column=info:d, timestamp=1526694059106, value=\x0A\x07default
> hbase column=info:d, timestamp=1526694059461, value=\x0A\x05hbase
> {code}
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