[HBASE-10750] Pluggable MemStoreLAB

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.99.0
• Component/s: regionserver
• Hadoop Flags: Reviewed

Release Note

The default implementation of the MemStore optionally can use a MSLAB. This jira makes it also pluggable. Configure the FQCN of the impl class against the config key "hbase.regionserver.mslab.class" to plugin a custom implementation

• Assignee: Anoop Sam John
• Reporter: Anoop Sam John
• Created: 14/Mar/14 10:51
• Updated: 21/Feb/15 23:34
• Resolved: 25/Mar/14 13:31

Description

This can allow one to have offheap MSLAB also.
The allocate() returns a byte[] now. This has to be changed to ByteRange so that the impl can return on heap byte[] backed BR or offheap buffer backed BR.