[HBASE-11011] Avoid extra getFileStatus() calls on Region startup

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 0.96.2, 0.98.1, 1.0.0
• Fix Version/s: 0.99.0, 0.98.2, 0.96.3
• Component/s: regionserver
• Assignee: Matteo Bertozzi
• Reporter: Matteo Bertozzi
• Created: 17/Apr/14 02:06
• Updated: 21/Feb/15 23:35
• Resolved: 18/Apr/14 17:19

Description

On load we already have a StoreFileInfo and we create it from the path,
this will result in an extra fs.getFileStatus() call.

In completeCompactionMarker() we do a fs.exists() and later a fs.getFileStatus()
to create the StoreFileInfo, we can avoid the exists.