[HBASE-2580] Make the hlog file names unique

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.90.0
• Hadoop Flags: Reviewed
• Assignee: Jean-Daniel Cryans
• Reporter: Jean-Daniel Cryans
• Created: 20/May/10 00:24
• Updated: 20/Nov/15 12:43
• Resolved: 21/May/10 18:50

Description

Currently the HLog archiving thread adds another timestamp to ensure the file names are "unique". This is ugly and makes it harder to track the HLogs movements from outside (like replication). Instead we could use a UUID as the file name.

I was discussing with Stack the need of keeping a timestamp in the file name... I think we can't get rid of it since we need to read the HLogs in sequence when splitting.