[HBASE-18109] Assign system tables first (priority)

• Type: Sub-task
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.0
• Component/s: Region Assignment
• Hadoop Flags: Reviewed

Release Note

Adds a sort of procedures before submission so system tables are queued first (which will help ensure they go out first). This should be good enough along w/ existing scheduling mechanisms to ensure system/meta are assigned first (See reasoning below). Open new issue if insufficient.

• Assignee: Yi Liang
• Reporter: Michael Stack
• Created: 25/May/17 00:12
• Updated: 17/Jun/22 18:12
• Resolved: 08/Jun/17 20:28

Description

Need this for stuff like the RSGroup table, etc. Assign these ahead of user-space regions.

From 'Handle sys table assignment first (e.g. acl, namespace, rsgroup); currently only hbase:meta is first.' of https://docs.google.com/document/d/1eVKa7FHdeoJ1-9o8yZcOTAQbv0u0bblBlCCzVSIn69g/edit#heading=h.oefcyphs0v0x

Issue Links

• is related to: HBASE-19976 Dead lock if the worker threads in procedure executor are exhausted
• relates to: HBASE-18366 Fix flaky test hbase.master.procedure.TestServerCrashProcedure#testRecoveryAndDoubleExecutionOnRsWithMeta
• relates to: HBASE-18865 Ensure system tables can have their WALs split prior to user tables