1. The State
Enis Söztutar and Michael Stack
HBase Project Management Committee

2. Pervasive

3. SemVer in Action
1.0.0 Released last year. Started following semantic versioning
10 releases with 1.x.y versions. More coming!
Release notes contain “compatibility” report for source / binary
Patch upgrades do not have new features. Safe to upgrade.
Learnt from singularity (0.94 -> 0.96+)
2.0 will be rolling upgradable!

4. Releases
Since last year
1.2 Branch RM: Sean Busbey (Two releases)
1.1 Branch RM: Nick Dimiduk (Five releases)
1.0 Branch RM: Enis Söztutar (Three releases, EOL)
0.98 Branch RM: Andrew Purtell (Five releases)
0.94 Branch RM: Lars Hofhansl
1.3 branch RM: Mikhail Antonov
An RCs a-coming...
2.0 branch RM: Matteo Bertozzi
EOY

5. Development Focus
Offheaping
Read path (done)
Write path in development
In-memory flushes/compactions
Compact in-memory representations
Fatter flushes
Assignment Manager/Master
New Compaction Policies
More Scan Improvements
Spark Integration
C++ Client
Async Client, Async WAL Writer

6. Dogfooding
YARN Application Timeline Server v.2 (YARN-2928)
Using HBase as storage backend, significantly improves the system scalability
Close to a branch merge with basic components ready. fault tolerance, writer isolation, etc.
Hive MetaStore in HBase (HIVE-9452)
Branch merged to Hive trunk. Comes as a beta in Hive-2.0.0.
1.6x improvement on TPC-DS, 13x improvement in explain-only plans
HBase stores file metadata cache accessed by tasks
Ambari Metrics Server (AMBARI-5707)
Metrics store using Phoenix. Does aggregations
Grafana front-end in Ambari-2.2.2

7. Committers
Since last year
Yu Li
Francis Liu
Ashish Singhi
Heng Chen
Stephen Yuan Jiang
Esteban Guitierrez
Mikhail Antonov (PMC)
Currently 50 committers and 27 PMC members
Committers from: Alibaba, Cask, Cloudera, Facebook, HortonWorks, Huawei,
IBM, Intel, Salesforce, Xiaomi, Yahoo!, etc.

8. What is?
1 in 50?

9. Health

10. Health
https://www.openhub.net/p/hbase
● ...has had 11,969 commits made by 139 contributors
representing 953,432 lines of code
● ...took an estimated 267 years of effort (COCOMO
model) starting with its first commit in April, 2007 ending
with its most recent commit 6 days ago

11. Health
https://issues.apache.org/
Last 300 Days

12. Ecosystem
Currently in Apache Incubator
Tephra
Omid
Trafodion
S2Graph
Top level projects
Phoenix
Kylin
Others
OpenTSDB
SpliceMachine
TiDB
etc.

13. Deferred<Future>
EOD Session
Lars Hofhansl HBase Futures