6. 
Open Source and Community
6
• Contributing to open source since 2011
• 3 PMC, 6 Committers in Alibaba
• Sponsor the Chinese HBase Technology Community
• Already Organized 2 HBase Meetup
• At least one HBase Related tech article one day
• Tens of thousands of readers now, and more are coming
• Hosting HBase Con Asia 2018
• Promote the use of HBase through several conference talks
• Hope more people to join in HBase Community

11. 
GC Trouble
11
Type Pause Time Frequency
YGC 100ms+ Once per 5 Secs
CMS 100~500ms Once per 5 Mins
FGC 20s-180s Once per 7~60 Days
Type Pause Time Frequency
YGC 5ms Once per 5 Secs
CMS 100ms Once per 5 Hours
FGC N/A N/A
CCSMap BucketCacheV2
Allocation and reclaim the major memory
by hbase itself, rather than JVM
ZenGC
New GC algorithm in AJDK
Try best to reuse object(In Core Path) when
programming

15. 
Heterogeneous Cold-Hot Storage
15
• HBase has the capability to hold all the data of whole life cycle
• But in most cases, like monitor, trace, order, logistics
• The recently generated data is often accessed, but occupy very little storage space
• The history data is rarely visited, but occupy a lot of storage space
• Common solution
• Cold storage system for history data
• Hot storage system for recent data
• Move the data from hot storage system to cold storage system periodically