[HBASE-11219] HRegionServer#createRegionLoad() should reuse RegionLoad.Builder instance when called in a loop

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.99.0, 0.98.3
• Hadoop Flags: Reviewed
• Assignee: Ted Yu
• Reporter: Ted Yu
• Created: 21/May/14 03:42
• Updated: 21/Feb/15 23:34
• Resolved: 22/May/14 04:53

Description

As Andrew showed in the attachment to HBASE-11165, ClusterStatusProtos$RegionLoad$Builder took 25MB heap space.

buildServerLoad() calls createRegionLoad() for each region on the region server.
One instance of ClusterStatusProtos$RegionLoad$Builder can be created outside the loop and passed to createRegionLoad().

Thanks Andrew for the finding.