[HBASE-12054] bad state after NamespaceUpgrade with reserved table names

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.96.2, 0.99.0, 0.98.6.1
• Fix Version/s: 0.98.7, 0.99.1

Release Note

Prior to HBase 0.98.7, if you have 0.94 tables named (data, archive, corrupt, lib, WALs, splitWAl, oldWALs) upgrading would "silently" fail, corrupting the state of those tables.

• Assignee: Matteo Bertozzi
• Reporter: Matteo Bertozzi
• Created: 22/Sep/14 18:57
• Updated: 06/Apr/18 17:55
• Resolved: 24/Sep/14 18:50

Description

If 94 has a table called "data" NamespaceUpgrade will fail to bring that table up and the generated layout will be dirty with stuff like "/hbase/data/.data" and so on.

(the reserved names that we have no longer apply in 96+ since the data is separate from the root dir)