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Sean Busbey commented on HBASE-21154: ------------------------------------- bq. HBASE-21508 has been committed, so let me commit the patch here first. Since it is only on master, I think it is OK as there is no recent releases so we can open new issues to address the new problems. Am I as a reviewer expected to open these new issues? Without looking at anything other than the file list I can say that this change doesn't have sufficient documentation. The namespace table going away is A Big Deal operationally. It should be called out in an upgrade section on moving to 3.0. > 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 > Fix For: 3.0.0 > > Attachments: HBASE-21154-v1.patch, HBASE-21154-v2.patch, > HBASE-21154-v4.patch, HBASE-21154-v5.patch, HBASE-21154-v6.patch, > HBASE-21154-v7.patch, 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} -- This message was sent by Atlassian JIRA (v7.6.3#76005)