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From Guanghao Zhang <zghao...@gmail.com>
Subject [ANNOUNCE] Apache HBase 2.2.0 is now available for download
Date Fri, 14 Jun 2019 00:52:40 GMT
The HBase team is happy to announce the immediate availability of HBase
2.2.0.

Apache HBaseâ„¢ 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/.

To download 2.2.0, visit our download page:
http://hbase.apache.org/downloads.html

HBase 2.2.0 is the third minor release in the HBase 2.x line, which aims to
improve the stability and reliability of HBase. This release includes roughly
660+ resolved issues since 2.1.0.

Notable new features include:
- HBASE-20881 introduced a new TransitRegionStateProcedure to replace the
old AssignProcedure/UnassignProcedure/MoveRegionProcedure. This is an
incompatible change and different implemenation with 2.0 and 2.1. Please
see the release note of HBASE-21970 about how to upgrade from 2.0 or 2.1 to
2.2+.
- HBASE-22399 The default hadoop-two.version has been changed to 2.8.5, and
all hadoop versions before 2.8.2(exclude) will not be supported any more.
- HBASE-20610 introduced a new way to do WAL splitting coordination by
procedure v2 framework.

For instructions on verifying ASF release downloads, please see
https://www.apache.org/dyn/closer.cgi#verify

Project member signature keys can be found at
<https://www.apache.org/dist/hbase/KEYS>
https://www.apache.org/dist/hbase/KEYS

The list of 660+ changes made since 2.1.0 can be found here:
https://apache.org/dist/hbase/2.2.0/CHANGES.md

The compatibility report vs 2.1.5:
https://apache.org/dist/hbase/2.2.0/api_compare_2.2.0RC6_to_2.1.5.html

Question, comments, and problems are always welcome at: dev@hbase.apache.org

Thanks to all who contributed and made this release possible.

Cheers,
The HBase Dev Team

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