[ANNOUNCE] Apache Calcite 0.9.1 (incubating) released

[Julian Hyde <jh...@apache.org>]

I am pleased to announce Apache Calcite release 0.9.1 (incubating).

Apache Calcite is a dynamic data management framework. You can use
Calcite as a toolkit for building a SQL:2011 compliant parser,
validator and query planner for your database; several well-known
projects including Apache Hive and Apache Drill do this. Calcite can
also mediate between a JDBC application and one or more relational or
non-relational data sources, executing the parts of the query that
cannot be pushed down to the data source, and using materialized query
results to improve query performance.

This is the first release of the project under its new name (it was
previously called Optiq) and the second release under the Apache
incubator process.

New features include lattices, which automatically generate and use
materialized views to accelerate star schema queries; a relational
expression interpreter, which can evaluate queries without
code-generation; and many improvements to the built-in planner rules.
Read about the numerous bug fixes and other improvements in the
release notes [1].

The release is available to download at [2].

The artifacts are signed with a PGP key [3], and their hashes are as follows:
* apache-calcite-0.9.1-incubating-src.tar.gz.md5
f7c1a0fa488e061f6812bb0014561738
* apache-calcite-0.9.1-incubating-src.tar.gz.sha1
bf3fc81fb911a33be9e6d9afb0e5d2b34a25fb4c
* apache-calcite-0.9.1-incubating-src.zip.md5 e0326c9463075df3c6f8f9a1324f9512
* apache-calcite-0.9.1-incubating-src.zip.sha1
5943eed6532b3c6edeb208a605a1f5ee6532a0c2

Julian

[1] https://github.com/apache/incubator-calcite/blob/master/doc/HISTORY.md#091-incubating--2014-10-02
[2] http://www.apache.org/dyn/closer.cgi/incubator/calcite/apache-calcite-0.9.1-incubating
[3] https://dist.apache.org/repos/dist/release/incubator/calcite/KEYS