[HBASE-2041] Change WAL default configuration values

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.90.0
• Hadoop Flags: Reviewed
• Assignee: Jean-Daniel Cryans
• Reporter: Jean-Daniel Cryans
• Created: 12/Dec/09 01:35
• Updated: 20/Nov/15 13:02
• Resolved: 07/Feb/10 08:22

Description

My last email on the thread "Should we change the default value of hbase.regionserver.flushlogentries for 0.21?"

Ok to make sure I get this right:

• we enable deferred log flush by default
• we set flushlogentries=1

Also since 10 seconds is kind of a huge window I propose that:

• we set optionalLogFlush=1000

which is the MySQL default. We also have to update the wiki (there's
already an entry on deferred log flush) by adding the configuration of
flushlogentries.