1. State of HBase
Invasion of the Release Managers

2. Release Managers
• 0.94 Lars Hofhansl
• 0.96 Michael Stack
• 0.98 Andrew Purtell
• 1.0 Enis Söztutar

3. Outline
• State of each branch
• Q&A

4. 0.94 Attributes
• Frequent bug fix releases (monthly)
• Still sees minor features
• Support for Hadoop 1, 2.0.x, Java 6 and 7
• Old (0.92) DNA, no protobufs, old AM

5. 0.94 State
• Current release 0.94.19
• Will have a few more releases
• Many large production installs out there
• Super stable and battle hardened
• EOL? Downtime for upgrade to 0.96+

6. • The “Singularity”
o Released 10/19/2013
o 18 months in the making
o 2k issues fixed/1500 in 0.96 only
• Big Themes
o Stability
o Operability
o Scaling
https://www.flickr.com/photos/sysli/3026288256/sizes/q/in/photostream/
Attributes

7. • Currently 0.96.2
• Maybe 0.96.3, but EOL’ing => 0.98.x!
• In CDH 5.0.x (0.96.1.1)/HDP 2.0.x
State

8. 0.98 Attributes
• Major themes
o Security
o Evolution
o Performance improvements
o API cleanups/deprecations on the road to HBase 1.0
• Monthly release schedule
• Support for Hadoop 1 and 2, but focus is on
Hadoop 2; Java 6 and 7

9. 0.98 State
• Current release 0.98.2
• Field testing for 1.0
o Expect incremental additive feature evolution
o HFile V3 and dependent features experimental until
1.0
• Seamless upgrade from 0.96
• CDH 5.1.x (not out yet)/HDP 2.1.x

10. 1.0 Attributes
• Stability of 0.96 / 0.98 line
• API cleanup
o Table / Connection
o Annotation of what is public
o Replication / Coprocessor APIs
• Semantic improvements
o Security / ACLs
o SeqId

11. 1.0 Attributes
• Masters become region servers
o (Optional) only system tables are hosted in active
master
• Cell level ACL / HFile v3 completion
• Dist log replay enabled by default
• Perf improvements

12. 1.0 State
• Planned a couple of 0.99.x releases
o A developer releases which won’t be supported
o Summer timeframe
o 0.99.x will become 1.0.0
• Use semantic versioning afterwards
o Major, minor, and patch releases
o More frequent major releases

13. Q&A