[HBASE-14470] Reduce memory pressure generated by client

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Abandoned
• Affects Version/s: 1.3.0
• Component/s: Client, Performance
• Assignee: Unassigned
• Reporter: Nick Dimiduk
• Created: 23/Sep/15 16:25
• Updated: 01/Jul/22 21:35
• Resolved: 11/Jun/22 20:52

Description

I think there's room for improvement in our client's memory profile. I ran ltt with jfr running, attaching some snaps of what my client sees. Looks like some kind of object pool or block encoding for result objects will give us a lot of bang for the buck re: allocations and GC pressure. We probably also want to look for an alternative way to represent result objects, something besides the java Map interface with it's Entry bloat.