Apache HBase 3.0.0-alpha-4 is now available for download

The HBase team is happy to announce the immediate availability of HBase
3.0.0-alpha-4.

Apache HBase™ is an open-source, distributed, versioned, non-relational
database. Apache HBase gives you low latency random access to billions of rows
with millions of columns atop non-specialized hardware. To learn more about
HBase, see https://hbase.apache.org/.

HBase 3.0.0-alpha-4 is the fourth alpha release in the HBase 3.x line, which is
the fourth release of our next major release line. It includes roughly 4000+
resolved issues since 2.0.0.

HBase 3.0.0-alpha-4 release will mark the final alpha version for the HBase 3.x
line. This indicates that the major features for 3.x have been finalized. The
subsequent release, 3.0.0-beta-1, will prioritize improving stability and
cleaning up the API.

Notice that this is not a production ready release. It is used to let our
users try and test the new major release, to get feedback before the final GA
release is out. So please do NOT use it in production. Just try it and report
back everything you find unusual.

Notable new features include:
Synchronous Replication
OpenTelemetry Tracing
Distributed MOB Compaction
Backup and Restore
Decouple region replication and general replication framework, and also
make region replication can work when SKIP_WAL is used
A new file system based replication peer storage
Use hbase table instead of zookeeper for tracking hbase replication queue

For other important changes:
We do not support hadoop 2.x any more
Move RSGroup balancer to core
Reimplement sync client on async client
CPEPs on shaded proto
Move the logging framework from log4j to log4j2

The full list of issues and release notes can be found here:

CHANGELOG: https://downloads.apache.org/hbase/3.0.0-alpha-4/CHANGES.md
RELEASENOTES: https://downloads.apache.org/hbase/3.0.0-alpha-4/RELEASENOTES.md

or via our issue tracker:

https://issues.apache.org/jira/projects/HBASE/versions/12351845
https://issues.apache.org/jira/projects/HBASE/versions/12350942
https://issues.apache.org/jira/projects/HBASE/versions/12350250
https://issues.apache.org/jira/projects/HBASE/versions/12332342

To download please follow the links and instructions on our website:

https://hbase.apache.org/downloads.html

Questions, comments, and problems are always welcome at:

[email protected]
[email protected]
[email protected]

Thanks to all who contributed and made this release possible.

Cheers,
The HBase Dev Team