[jira] [Created] (HBASE-21154) Remove hbase:namespace table; fold it into hbase:meta

["stack (JIRA)" <ji...@apache.org>]

stack created HBASE-21154:
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             Summary: 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
            Reporter: stack


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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