[HBASE-2896] Retain assignment information between cluster shutdown/startup

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.90.0
• Component/s: master, regionserver
• Hadoop Flags: Reviewed
• Assignee: Jonathan Gray
• Reporter: Jonathan Gray
• Created: 03/Aug/10 02:14
• Updated: 20/Nov/15 12:41
• Resolved: 06/Nov/10 22:12

Description

Over in HBASE-57 we want to consider block locations for region assignment. This is most important during cluster startup where you currently lose all locality because regions are assignment randomly.

This jira is about a shot-term solution to the cluster startup problem by retaining assignment information after a cluster shutdown and using it on the next cluster startup.

Issue Links

• depends upon: HBASE-2692 Master rewrite and cleanup for 0.90
• relates to: HBASE-57 [hbase] Master should allocate regions to regionservers based upon data locality and rack awareness