[HBASE-1188] Memory size of Java Objects - Make cacheable objects implement HeapSize

• Type: Improvement
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.20.0
• Fix Version/s: 0.20.0
• Assignee: Jonathan Gray
• Reporter: Jonathan Gray
• Created: 06/Feb/09 20:45
• Updated: 02/May/13 02:29
• Resolved: 26/Feb/09 18:22

Description

In order to make our efforts as generic as possible over in HBASE-1186, we need to add HeapSize functionality to more classes.

This issue is so we have a central place to post code and discuss the issues related to determining the size of a Java object in memory.

Erik Holstad and I have made good progress and have done significant research into other Java caching projects. We will report our findings here.

Issue Links

• is depended upon by: HBASE-1192 LRU-style map for the block cache
• is depended upon by: HBASE-1186 Memory-aware Maps with LRU eviction for Cell Cache
• is depended upon by: HBASE-80 [hbase] Add a cache of 'hot' cells