MapReduce

## [Event overview:](https://reg.experiences.redhat.com/flow/redhat/3213250/redhatfieldeventspreregnoappform/page/landingregistrationpage?sc_cid=RHCTN1250000469339) Register [HERE ](https://reg.experiences.redhat.com/flow/redhat/3213250/redhatfieldeventspreregnoappform/page/landingregistrationpage?sc_cid=RHCTN1250000469339)to learn more! This isn't your typical tech event. Red Hat Tech Day is a full-day, "laptops-open" intensive designed for the builders, operators, and architects who get things done and who understand that security is paramount to operational success. This day is 100% focused on deep, hands-on learning and building resilient, secure systems. You have the power to customize your day. Choose two immersive, expert-led workshops from our tracks designed to confront today's biggest enterprise challenges. You will leave with production-ready skills to reduce risk and enhance your defensive posture. Register [HERE ](https://reg.experiences.redhat.com/flow/redhat/3213250/redhatfieldeventspreregnoappform/page/landingregistrationpage?sc_cid=RHCTN1250000469339)to learn more!

## [Event overview:](https://reg.experiences.redhat.com/flow/redhat/3213250/redhatfieldeventspreregnoappform/page/landingregistrationpage?sc_cid=RHCTN1250000469339) Register [HERE ](https://reg.experiences.redhat.com/flow/redhat/3213250/redhatfieldeventspreregnoappform/page/landingregistrationpage?sc_cid=RHCTN1250000469339)to learn more! This isn't your typical tech event. Red Hat Tech Day is a full-day, "laptops-open" intensive designed for the builders, operators, and architects who get things done and who understand that security is paramount to operational success. This day is 100% focused on deep, hands-on learning and building resilient, secure systems. You have the power to customize your day. Choose two immersive, expert-led workshops from our tracks designed to confront today's biggest enterprise challenges. You will leave with production-ready skills to reduce risk and enhance your defensive posture. Register [HERE ](https://reg.experiences.redhat.com/flow/redhat/3213250/redhatfieldeventspreregnoappform/page/landingregistrationpage?sc_cid=RHCTN1250000469339)to learn more!

Update: Hello friends! We're running into a scheduling conflict and pushing our social forward by 1 week. My sincere apologies for the last minute shift! We're starting off this year nice and easy with a Power BI DC User Group social! Please save the evening of January 15th in your calendars as we ring in the new year together with our trademark mix of camaraderie and general nerdiness. We're working on nailing down the specific location but will ensure that it is metro accessible. See you then!

**Important! Please register on [Luma Page](https://luma.com/n7h7ynr4)** This event is organised by Projector Institute community and Ukrainian Tech Space DC MD VA Join us for an exclusive evening dedicated to exploring what it truly means to be a Product Designer — and how to manage this role more effectively in today’s fast-changing digital landscape. ​ During this session, we’ll dive into: • The pros and cons of working in product vs. non-product companies • Communication as one of the main design tools • Business-oriented approaches to product design • Practical insights for both junior and senior designers • The use of AI tools and workflows — backed by real-world examples ​ Speaker: [Misha Rybachuk](https://www.linkedin.com/in/mike-rybachuk/) — Co-founder of [Projector Institute](https://prjctr.com/en/about), Art Director at [Lezo.io](https://lezo.io/en), and former designer at Accenture. With over 10 years of experience in interface design, Mike has helped build impactful digital products by merging creativity, strategy, and technology. ​ This event is your opportunity to connect with fellow professionals, gain hands-on insights, and see how design bridges creativity, communication, and business success.

📚 Do you love reading, but wish you had a structure and a community to share your insights with? Join our small circle of curious minds (just 4 members per gathering) as we come together for an hour of focused reading—in the calm setting of a library or the cozy atmosphere of a café. Here’s how it works: First part: Quiet reading on your own—bring a book you’re exploring, whether it’s philosophy, history, psychology, literature, or anything meaningful to you. Second part: We regroup and each person shares key takeaways, insights, or questions sparked by their reading. This sparks a structured yet free-flowing conversation around ideas, perspectives, and personal reflections. Why join? Add structure to your reading habit. Discover new books, authors, and ideas through others’ choices. Build real connections by sharing and listening deeply. Socialize around something meaningful instead of small talk.

Let’s meet at Thai Tanium in Kentlands for some of their delicious food. Please only rsvp if you will attend. It is not fair to the restaurant to have no shows.

Thursdays at 6:30pm Take 30 minutes at the end of your day to unwind and connect to your potential for inner peace. Suitable for everyone, these meditation classes offer guided meditations and practical advice for improving the quality of our mental peace. **Registration** Each class is available by drop in. **Standard:** $5 **\| [Member Pricing:](https://meditation-dc.org/membership/) Free** [Register Here](https://meditation-dc.org/thursday-night-rest-and-reflect/) Everyone is welcome to attend, no previous experience is required. **LOCATION** Kadampa Meditation Center DC 1200 Canal St\. SW \| Washington\, DC 20024 **Metro Stop:** Waterfront or Navy Yard

Danceintime runs Cuban Salsa Classes & Social Dancing Every Saturday, all year-long. Come at 1:15 pm to sign in. Stay till 4 pm. Some of us go out for coffee or a bite to eat afterwards and everyone is welcome! $15/person. Cash, PayPal, Venmo, Apple Pay, or Card accepted. Chevy Chase Baptist Church; 5671 Western Ave. NW; Washington DC 20015. NOTE: Enter through back corner door of the church. Danceintime classes are great fun. The dance moves are beautiful, fun, and our class creates a bonded community... Check it out! Class will be held every Saturday in December....celebrate the holidays with dance! For more info: danceintime.com/classes Questions? Contact Barbbernsteintalks@gmail.com

**$60/2\.5\-hour Class \| Class Limit: 5** Hamiltonian Artists Second Floor, Studio 2 [Registration Link ](https://www.google.com/url?q=https://trishaart.com/classes/p/drop-in-classes&sa=D&source=calendar&usd=2&usg=AOvVaw07rgL9h-rFd3JRP7l9BSDN) In this introductory course, students will learn the history of Indian woodblock before using the technique for themselves to create a printed piece of fabric from start to finish. I will demonstrate the process before allowing students the opportunity to ask questions and practice. Various examples of patterns and motifs will be shared with the group that they can emulate for their own projects. We will provide a handkerchief for the final project, but students are encouraged to bring their own light-weight cotton objects to use instead.

This hidden jewel of a hike offers lots and lots of winter leg stretching and cardio workout opportunities as it circles around the mountains on the eastern side of Shenandoah National Park's central section. To begin our hike, we'll descend steeply from the Pinnacles Overlook, leaving most of the views behind us as we drop to the park's boundary before climbing upward following a mountain stream. There's winter greenery to jazz up the dull winter mood. Our very strenuous 10.8-mile circuit hike does not offer much in the way of views, but offers plenty of peaceful woods for us to explore. We'll see plentiful mountain laurel, old growth hemlock and wild oak. Along the way, we'll also see remnants of the mountains' former residents and travel on a very rocky forestry road. Elevation gain of this hike is approximately 2800 feet, with a significant portion at the end of the hike. Only well-conditioned and well-prepared hikers should attempt very strenuous hikes. The hike will generally be long and steep, and may include stream crossings and other challenging terrain. Bring plenty of water, snacks, lunch, sturdy footwear, optional headlamp, and about $24 for transportation and trip fees. ($5 for the Adventuring trip fee\*\*, $12 for mileage reimbursement, and a shared portion of the $30/car SNP admission fee. (We can usually cover the Park’s admission fee with those hikers who hold annual park passes.) We'll carpool at 8:00 a.m. from the Kiss & Ride Lot of the East Falls Church Metro Station. We will make our usual pit stop at a Sheetz to stock up on lunch and/or snacks before heading to the trailhead. There may be an optional dinner stop on the way home. RSVPs open 2 weeks before the event. \*\*Please [click here](https://adventuringlgbtq.com/Adventuring_Release_Form.pdf) to review our release form. When you RSVP to an event, you affirm that you have read and agree to the terms of the release.

This month, we're discussing API design and single-header libraries. How should we structure and program libraries to impose as few usage constraints as possible? We’ll look at [the STB libraries](https://github.com/nothings/stb) and other examples as case studies. *Note the slightly different time than usual.* We're still at the West End Library. **Agenda:** \- 1:45 \- 2:45pm: Library discussion \- 2:45pm \- whenever: Keep chatting over lunch nearby **What we do** Presentations on lower-level, foundational programming topics, ethical software, knowledge sharing, mentoring, and discussion. **Who we are:** We are all about handmade software. Rather than focus on frameworks, heavy abstractions, and buzzwords - we typically create projects or research topics that build an understanding of foundational computing concepts, essential data structures, and hardware/software interaction. **What to bring?** Bring a laptop, project, or just a curious mind. If you're not sure you're ready to contribute, don't worry: we're all here to share our passions and hone our craft. **If you arrive late:** Please enter the room quietly as to not disrupt anyone that is presenting. You can take any empty seat.

Volunteers collect, store, and deliver donated furniture and other household items, free of charge, to needy families in the Annandale, Bailey’s Crossroads, and Culmore areas. The furniture is stored in a building donated by Annandale United Methodist Church. ACCA receives requests for furniture through Fairfax County human services staff and specialized agencies, churches, and schools. ACCA churches and community volunteers take turns providing teams of volunteers to work at the warehouse located at 6935 Columbia Pike on Saturday mornings. [https://accacares.org/furniture/](https://accacares.org/furniture/)

Kickstart your year with Total Body Sculpt! Join us for an invigorating full-body workout designed to help you achieve your New Year’s fitness goals. This dynamic class will help set the tone for a healthier and stronger you. Level: All. Ages 13 & up; FREE **Lake Arbor Community Center** **[REGISTER THROUGH PARKS DIRECT](https://mdpgparksweb.myvscloud.com/webtrac/web/search.html?Action=Start&SubAction=&_csrf_token=Pe0W6P6S0B17294F1R3B1Q4Q5D3Z5E58055O425I561C5I4R6G510H005P4N521J724Q4V6L02705P6N4S1A4Q60544B055T4S5D5V1K5O5Y5556196U3W5C4X6D734V56&age=0.25&age=0.5&age=0.75&age=1&age=2&age=3&age=4&age=5&age=6&age=7&age=8&age=9&age=10&age=11&age=12&age=13&age=14&age=15&age=16&age=17&age=Adult&age=Senior&primarycode=17681-179A&keyword=&keywordoption=Match+One&showwithavailable=No&spotsavailable=&beginyear=&instructor=&dayoption=All&display=Detail&module=AR&multiselectlist_value=&arwebsearch_buttonsearch=yes)** For fastest response to any questions, or for more information, please contact Health and Wellness directly via email [wellness@pgparks.com](wellness@pgparks.com)

Join us for a laid-back Sunday Brunch. The Brunch is All-You-Can-Eat buffet and a bottle of Champagne (750 ml) with Orange Juice. You make your own mimosa. Just only for $ 45.00 per person without tax & gratuity! It includes French toast, pancakes, waffles, omelettes made to order, Pasta, Salads, Roast Beef, Pork Ribs, oyster bar, cheese bar and Salmon, plenty of fresh fruit, yogurt, cakes, cookies, and pudding....mmmm! This brunch is followed by a Happy Hour and we will be joined by many people and after brunch, we mingle and socialize with large group. PARKING AND METRO INFO Street parking might be a challenge and the event involves drinking, we highly encourage public transportation/ride share/taxi service. Please take into account Metro's Weekend Track Work & Service Adjustments. Check it on http://www.wmata.com/ and plan accordingly. http://photos4.meetupstatic.com/photos/event/2/b/2/2/600_400271042.jpeg http://photos3.meetupstatic.com/photos/event/2/b/a/e/600_400271182.jpeg Payment Instructions : 1. You should login from a PC to see the 'Pay Now' button, after RSVPing. Then hit the button. 2. Verify correct dollar amount for number of people you're paying for. 3. If you don't have a Paypal account, click "Pay with a Debit or Credit Card". 4. If you have a Paypal account, simply log in, and pay as you normally would via Paypal. Refund & Ticket Resell All sales are final. We only refund the full amount, if the event is canceled. If it is rescheduled, we will send an email to those who RSVPed 'YES' advising that. A full refund will be given to those that let us know within 2 calendar days of the update email, if you are unable to make it on the new date. No refunds will be given after that time. However, you can sell your ticket to someone else if you are unable to attend. Please, feel free to post in the comment box for the event, that you have a ticket for sale. Work out payment between yourselves, and have the seller only send the organizer a "message" through their Meetup profile (do not comment in the comment box of the event posting) letting us know the full name and Meetup profile URL (if a member) of the person taking your spot. You must let us know two hours before the RSVP close time, on the day of the event.

## Learn Infrastructure-as-Code (the FUN Way) — Through Minecraft 🎮☁️ **Joint Meetup: Azure CBUS × Columbus HashiCorp User Group × DevOps Columbus** What if learning Terraform and Infrastructure-as-Code didn’t feel like a whitepaper… but more like a game? Join us for a joint Azure CBUS, Columbus HashiCorp User Group, and DevOps Columbus meetup where **Mark Tinderholt** \(Principal Architect\, Microsoft Azure \| HashiCorp Ambassador \| “The Azure Terraformer”\) shows how **Minecraft** can be used as a surprisingly powerful way to understand real-world Infrastructure-as-Code concepts. In this session, Mark will demonstrate how Terraform and Azure can be used to provision, configure, and manage Minecraft servers—while teaching the same patterns you’d use for production cloud infrastructure. ### What we’ll cover * Infrastructure-as-Code fundamentals using **Terraform** * Provisioning real infrastructure on **Azure** * Applying **IaC best practices** (immutability, repeatability, versioning) * How playful environments like Minecraft make complex concepts *click* * Why learning through experimentation beats click-ops every time ### Who should attend * Developers, platform engineers, and cloud engineers * Terraform users (new or experienced) * Anyone curious about Infrastructure-as-Code but tired of boring examples * Minecraft fans who want to see it used in a totally unexpected way No prior Minecraft experience required—just curiosity and a willingness to learn infrastructure the fun way. Come for the blocks, stay for the Terraform. 🧱➡️📐 Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/azure-cbus-2026/

Jimmy V's Grill & Pub in Grandview Heights. You are responsible for your own meal/drinks. We usually don't have any agenda other than eat, drink and talk. :) If the weather is nice we will be on the back patio, otherwise we are in the cigar room. This group has been meeting every Tuesday evening for over a decade. Many attendees do not RSVP on meetup. Please don't let the small number here discourage you. Anyone/everyone is welcome to come. We'd love to have you join us. COTA bus #5 comes to W. 5th and Wyandotte Rd. And it's a minute walk to the restaurant.

## Details \#\# Learn Infrastructure\-as\-Code \(the FUN Way\) — Through Minecraft 🎮☁️ **Joint Meetup: DevOps Columbus - Azure CBUS - Columbus HashiCorp User Group** What if learning Terraform and Infrastructure-as-Code didn’t feel like a whitepaper… but more like a game? Join us for a joint DevOps Columbus, Azure CBUS and Columbus HashiCorp User Group meetup where **Mark Tinderholt** \(Principal Architect\, Microsoft Azure \| HashiCorp Ambassador \| “The Azure Terraformer”\) shows how **Minecraft** can be used as a surprisingly powerful way to understand real-world Infrastructure-as-Code concepts. In this session, Mark will demonstrate how Terraform and Azure can be used to provision, configure, and manage Minecraft servers—while teaching the same patterns you’d use for production cloud infrastructure. \#\#\# What we’ll cover * Infrastructure-as-Code fundamentals using **Terraform** * Provisioning real infrastructure on **Azure** * Applying **IaC best practices** (immutability, repeatability, versioning) * How playful environments like Minecraft make complex concepts *click* * Why learning through experimentation beats click-ops every time \#\#\# Who should attend * Developers, platform engineers, and cloud engineers * Terraform users (new or experienced) * Anyone curious about Infrastructure-as-Code but tired of boring examples * Minecraft fans who want to see it used in a totally unexpected way No prior Minecraft experience required—just curiosity and a willingness to learn infrastructure the fun way. Come for the blocks, stay for the Terraform. 🧱➡️📐

Jimmy V's Grill & Pub in Grandview Heights. You are responsible for your own meal/drinks. We usually don't have any agenda other than eat, drink and talk. :) If the weather is nice we will be on the back patio, otherwise we are in the cigar room. This group has been meeting every Tuesday evening for over a decade. Many attendees do not RSVP on meetup. Please don't let the small number here discourage you. Anyone/everyone is welcome to come. We'd love to have you join us. COTA bus #5 comes to W. 5th and Wyandotte Rd. And it's a minute walk to the restaurant. Did you know that there are atheists everywhere?!?! You may not know it, but we are! We're in your schools, diners, police force, military, government, and some are even still in your churches! So come and join us and meet other local atheists, along with agnostics, heathens, humanists, skeptics, and anyone else who's 'hell bound'! Vision: a Central Ohio that accepts atheism as a viable alternative in all areas of public and private life. Mission: grow, support, and provide community for atheists in Central Ohio. Social meetings held most Tuesdays at a local pub/restaurant at 7:00 PM (and often into the wee hours). Attendees call themselves agnostics, skeptics, humanists, non-theists, deists or even theists. All attendees are welcome but should support our vision. Atheists of Columbus (AoC) is part of Omnipresent Atheists (OA). AoC members are invited to join this OA meetup and/or OA Facebook group ( https://www.facebook.com/groups/omnipresentatheists/ ) but are free to continue conversations on the AoC Facebook group ( https://www.facebook.com/groups/columbusatheists/ ). AoC was founded in 2012 as a networking, social group for Central Ohio area humanists, skeptics, atheists, agnostics, nonbelievers, freethinkers, and the curious. It was a member of Columbus CoR and held weekly meetings, mostly on Fridays, for several years but then operated as an online only group for some time. In November 2018, Omnipresent Atheists (OA), a group that routinely meets on Tuesdays, invited AoC to merge. Omnipresent Atheists is a member of the Columbus Coalition of Reason (ColumbusCoR.org). Omnipresent Atheists is a member of the Columbus Coalition of Reason ( http://www.ColumbusCoR.org ). Omnipresent Atheists endorses the mission of the Secular Coalition for America ( http://secular.org ). This group has been meeting every Tuesday evening for over a decade. Many attendees do not RSVP on meetup. Please don't let the small number here discourage you. Anyone/everyone is welcome to come. We'd love to have you join us.

## Learn Infrastructure-as-Code (the FUN Way) — Through Minecraft 🎮☁️ **Joint Meetup: Azure CBUS × Columbus HashiCorp User Group** What if learning Terraform and Infrastructure-as-Code didn’t feel like a whitepaper… but more like a game? Join us for a joint Azure CBUS and Columbus HashiCorp User Group meetup where **Mark Tinderholt** \(Principal Architect\, Microsoft Azure \| HashiCorp Ambassador \| “The Azure Terraformer”\) shows how **Minecraft** can be used as a surprisingly powerful way to understand real-world Infrastructure-as-Code concepts. In this session, Mark will demonstrate how Terraform and Azure can be used to provision, configure, and manage Minecraft servers—while teaching the same patterns you’d use for production cloud infrastructure. ### What we’ll cover * Infrastructure-as-Code fundamentals using **Terraform** * Provisioning real infrastructure on **Azure** * Applying **IaC best practices** (immutability, repeatability, versioning) * How playful environments like Minecraft make complex concepts *click* * Why learning through experimentation beats click-ops every time ### Who should attend * Developers, platform engineers, and cloud engineers * Terraform users (new or experienced) * Anyone curious about Infrastructure-as-Code but tired of boring examples * Minecraft fans who want to see it used in a totally unexpected way No prior Minecraft experience required—just curiosity and a willingness to learn infrastructure the fun way. Come for the blocks, stay for the Terraform. 🧱➡️📐 Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/cbus-hug-2026/

Jimmy V's Grill & Pub in Grandview Heights. You are responsible for your own meal/drinks. We usually don't have any agenda other than eat, drink and talk. :) If the weather is nice we will be on the back patio, otherwise we are in the cigar room. This group has been meeting every Tuesday evening for over a decade. Many attendees do not RSVP on meetup. Please don't let the small number here discourage you. Anyone/everyone is welcome to come. We'd love to have you join us. COTA bus #5 comes to W. 5th and Wyandotte Rd. And it's a minute walk to the restaurant. *** Did you know that there are atheists everywhere?!?! You may not know it, but we are! We're in your schools, diners, police force, military, government, and some are even still in your churches! So come and join us and meet other local atheists, along with agnostics, heathens, humanists, skeptics, and anyone else who's 'hell bound'! Vision: a Central Ohio that accepts atheism as a viable alternative in all areas of public and private life. Mission: grow, support, and provide community for atheists in Central Ohio. Social meetings held most Tuesdays at a local pub/restaurant at 7:00 PM (and often into the wee hours). Attendees call themselves agnostics, skeptics, humanists, non-theists, deists or even theists. All attendees are welcome but should support our vision. Atheists of Columbus (AoC) is part of Omnipresent Atheists (OA). AoC members are invited to join this OA meetup and/or OA Facebook group ( https://www.facebook.com/groups/omnipresentatheists/ ) but are free to continue conversations on the AoC Facebook group ( https://www.facebook.com/groups/columbusatheists/ ). AoC was founded in 2012 as a networking, social group for Central Ohio area humanists, skeptics, atheists, agnostics, nonbelievers, freethinkers, and the curious. It was a member of Columbus CoR and held weekly meetings, mostly on Fridays, for several years but then operated as an online only group for some time. In November 2018, Omnipresent Atheists (OA), a group that routinely meets on Tuesdays, invited AoC to merge. Omnipresent Atheists is a member of the Columbus Coalition of Reason (ColumbusCoR.org). Omnipresent Atheists is a member of the Columbus Coalition of Reason ( http://www.ColumbusCoR.org ). Omnipresent Atheists endorses the mission of the Secular Coalition for America ( http://secular.org ).

**NEW LOCATION: Improving Office in Franklinton** Physical location: Improving Office 330 Rush Alley Suite #150 Columbus, OH 43215 Schedule: * 6:00 p.m.: Socialize, eat, and drink. Improving will be providing pizza and beverages. * 6:30 to 8:00 pm. Main meeting and presentation(s). For this first meeting of the year, we will be reviewing submissions for the [Your Program is Hideous and Obfuscated Challenge (YPHOC). ](https://docs.google.com/document/d/13zbxwElpJqPMuAN4Ele2hUgsqtFKzH3OCTL5NEeiLKQ)Submissions for this challenge are due by January 12th, 2026. The details can be found here: or on our website http://www.cohpy.org See Our [Parking Map](https://docs.google.com/presentation/d/1u2A4fLNlxwLJn0KA_hKc8bnFlFHLvsHBDh-_8wzX_tk/edit?usp=sharing) We meet on the last Monday of each Month. Presentations are given by members and friends of this group. If you would like to do a presentation (small or large) on a python topic, please contact centralohpython@gmail.com