Project Activity: Apache Calcite 1.38.0 -> 1.39.0？ On 2025/03/18 07:36:45 Ruben Q L wrote: > Hello, > > Below you can find a draft of this quarter's board report. I plan to submit > the final version next Monday (a bit earlier than usual because I'll be > traveling in the next weeks). > Please let me know if you have any additions or corrections. > > Best, > Ruben > > ----------------------------------------------------- > > ## Description: > Apache Calcite is a highly customizable framework for parsing and planning > queries on data in a wide variety of formats. It allows database-like > access, > and in particular a SQL interface and advanced query optimization, for data > not residing in a traditional database. > > Avatica is a sub-project within Calcite and provides a framework for > building > local and remote JDBC and ODBC database drivers. Avatica has an independent > release schedule and its own repository. > > ## Project Status: > Current project status: ongoing (high activity) > Issues for the board: none > > ## Membership Data: > Apache Calcite was founded 2015-10-22 (9 years ago) > There are currently 77 committers and 30 PMC members in this project. > The Committer-to-PMC ratio is roughly 5:2. > > Community changes, past quarter: > - Istvan Toth was added to the PMC on 2025-03-05 > - Cancai Cai was added as committer on 2025-01-20 > - Fanyuan Qiu was added as committer on 2025-02-25 > > ## Project Activity: > Apache Calcite 1.38.0 was released on 2025-03-16. It contained contributions > from 45 contributors, and resolved 209 issues. Highlights include the > support > of the VARIANT and UUID data types, the support of checked arithmetic, the > addition of an optimal join enumeration algorithm based on dynamic > programming > (DPhyp), new operators and data type support in Arrow adapter, enhanced SQL > compatibility with additional functions across Oracle, PostgreSQL, Hive, > Spark, and MSSQL. > > Apache Avatica-Go 5.4.0 was released on 2025-03-05. It included dependency > updates and various minor improvements. > > Apache Avatica 1.26.0 was released on 2025-02-24. It contained several bug > fixes, dependency upgrades and support for JDK 23 and Gradle 8.7. > > A hybrid meetup was organized on 2025-02-20. 40+ people attended the event > in > person in Santa Clara, California; with 30+ people joining remotely. Four > talks were presented, describing various topics such as: Federated Query > Planning with Calcite and Substrait; Streaming, incremental, finite-memory > computations in SQL over unbounded streams; Revolutionizing Data Lakes: A > Dive > into Coral, the SQL Translation, Analysis, and Rewrite Engine; and > Optimizing > Common Table Expressions in Apache Hive with Calcite. > > ## Community Health: > The community continues on a "Super healthy" status. Looking at the metrics, > we have seen a slight increase (3� in traffic on the dev mailing list; and > a > significant increase in commits (54� and code contributors (27� ; which is > somehow expected considering that the previous quarter was rather "slow" > (probably due to the holiday season). > > The number of reviewers have increased compared with previous quarters > (with a > more balanced distribution among the top reviewers), which is good news > because this is one area where our project particularly struggles > frequently. > > The number of non-committer (contributor) commits per month: > +------+-------+---------------------+ > | year | month | contributor_commits | > +------+-------+---------------------+ > | 2025 | 1 | 36 | > | 2025 | 2 | 19 | > | 2025 | 3 | 6 | > +------+-------+---------------------+ > > The number of active reviewers per month: > +------+-------+------------------+ > | year | month | active_reviewers | > +------+-------+------------------+ > | 2025 | 1 | 8 | > | 2025 | 2 | 7 | > | 2025 | 3 | 4 | > +------+-------+------------------+ > > Top reviewers in the last 3 months: > +-------------+---------+ > | committer | reviews | > +-------------+---------+ > | Mihai Budiu | 15 | > | ILuffZhe | 10 | > | Cancai Cai | 9 | > | NobiGo | 9 | > +-------------+---------+ >
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