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Google Summer of Code 2020 started

The PostgreSQL Project participates in Google Summer of Code (GSoC) 2020, with 3 projects. After the “Community Bonding” period finished last week, we are now in the active development phase - “Coding” as Google calls it. All three projects make good progress!

 

Performance Farm

The project defined a number of milestones, and evaluated the current database structure. Modifications are required on this front, and will be applied over the following days. Also the structure for sending data from the client to the project server is re-evaluated and modified. The student started with the database design modifications, and also with documenting the changes and terminology used.

 

PL/Java build system

Thanks to the ongoing work setting up the continuous integration, PL/Java's master branch - which will become the 1.6 release - is now getting regular CI builds against several PostgreSQL and Java versions on amd64 Ubuntu and Mac OS X, and the student has moved on to setting up the same for Windows. We had a goal to enable test options in the CI builds that were otherwise impractically strict, and identify ways to filter the output down to a manageable volume which is exposing real issues. Through a combination of fixes to some real PL/Java warnings, and a small state machine now keeping known non-PL/Java ones out of the log, the project now builds -Xcheck:jni clean. The first actual bug found through the students work got fixed before the bonding period ended - the bug had been there for fifteen years.

The later part of the work will involve more straight-up coding, to replace a Maven plugin now used in PL/Java's build that isn't quite suited to the need. The proposal outlined a few reasons for that and the preliminary work has already uncovered more reasons. It was already a goal of that work to improve the signal-to-noise ratio of diagnostics from that plugin, so already solving a similar problem for -Xcheck:jni was a good warmup.

 

WAL-G performance

First 2 weeks are going almost as we planned, the student started working on the first task during the phase of proposals. In the first week he updated his PR and we merged it. The first feature already works. This week he updated it with several improvements (mostly refactorings) and started working on test coverage of the first feature and also making some drafts on the second feature. Now we have discussion about design details of the second feature. I hope it will help to implement it according to the current plan.

 

Thank you to all mentors for the status update!

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Google Summer of Code 2019 - PostgreSQL participates with 5 projects

For the 13th year, the PostgreSQL Project is participating in Google Summer of Code (GSoC). This project is a great opportunity to let students learn about Open Source projects, and help them deliver new features. It is also a chance to engage the students beyond just one summer, and grow them into active contributors.

In GSoC, students first learn about the Open Source organization, and either pick a summer project from the list provided by the org, or submit their own idea for review. After a “community bonding” period, the students have time to implement their idea, under supervision of mentors from the Open Source organization. There is also an incentive: first, Google pays the students for their work on improving Open Source projects. And second, having a completed GSoC project in a CV is well recognized.

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Wrap-up: MADlib Google Summer of Code

Google Summer of Code 2014 is wrapped up: Maxence Ahlouche did an excellent job implementing one new algorithm for MADlib and refactored the code base for another one.

I posted a more detailled explanation in the Pivotal blog.

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Pivotal's Google Summer of Code 2014: Implementing Clustering Algorithms in MADlib

Together with Atri Sharma (former GSoC student) and Pivotal Engineer Hai Qian I'm mentoring Maxence Ahlouche in his Google Summer of Code MADlib project.

 

In the Pivotal Blog I've posted a more detailed explanation.

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GSoC 2011 - phpPgAdmin

Google Summer of Code 2011 is in the second term. Leonardo Sápiras passed the midterm evaluation and continues his work on the phpPgAdmin plugin infrastructure.

His work is already in an advanced stage, time to take a look and show you, what's possible.

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GSoC 2011 - Big changes in phpPgAdmin

After many years in the PostgreSQL community, I applied as a co-mentor for the phpPgAdmin project and was accepted. More specifically, the project is about a plugin architecture to extend phpPgAdmin, Leonardo Sápiras has submitted this proposal and was accepted. Jehan-Guillaume (ioguix) de Rorthais is the main mentor for this project.
If we had known beforehand how many questions a simple objection can raise - who knows if I would have been accepted as co-mentor;-)

One of the key issues in the new architecture is how plugins are implemented. Without describing all the gory details, here are the two discussed options:

On one hand this is possible if each plugin make's his own output, stays in his own subdirectory and is called directly from the browser. Otherwise there is very little interaction with the rest of the code.

Another option is to register all plugins in the phpPgAdmin core and make use of hooks to call certain functions of the plugins whenever necessary.

This question was only raised because the first approach requires including lib.inc.php from files which are not in the root directory of phpPgAdmin - this is not possible right now. At this point I provocatively raised the question of what a plugin is. And why a completely separate file in a subdirectory may call himself a "plugin".

The current consent is to implement the second option. This approach offers much greater possibilities. However, this approach may require refactoring of parts of the code in the future to make use of the new plugin architecture. Possibly even as part of another GSoC project.
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