Hadoop

Join us for Grafana talks mixed with snacks and community conversations! Schedule 18:00-18:30 Welcome, snacks, drinks and networking 18:30-19:00 **From Service to Line Number: Getting Started with Continuous Profiling** by Christian Simon, Principal Engineer at Grafana Logs, metrics, and traces tell you which service is slow or expensive. Profiles tell you which code path - down to the line number. With profiling now part of OpenTelemetry, and the eBPF profiler requiring zero instrumentation, there's never been a better time to add this missing piece to your observability stack. 1\. Value of Continuous Profiling 2\. How do you set up continuous profiling \(Pyroscope \+ OTel eBPF profiler\) 3\. Deriving insights from Profiles using Grafana Assistant 4\. Demo 19:00-19:40 **My Cool Grafana Dashboard Show and Tell - Lightning Talks** **Lightning talks:** **1\. What if Your Career Had Metrics?** **Roxana Turc, Software Engineer at BNY**, will show how she used Grafana to build a **career dashboard—tracking learning, work, and growth**, and why seeing her progress this way changed how she thinks about development. **2\. Using Grafana for Visualising IoT Air Quality Sensor Data** by John Sinha, Lead Technical Business Analyst IoT air quality sensors produce noisy, high-resolution time series data, but how you visualise it determines what you actually see. This lightning talk walks through a Grafana dashboard designed to **present environmental data clearly, covering time and value scaling choices, linear vs. log views, and practical denoising techniques.** See how small visualisation decisions can dramatically change the story your sensor data tells. 3. **How I discovered pigeons sabotaging my project with Kafka and Grafana** \- by Hugh Evans\, Developer Advocate at Aiven Learn how how a lightweight Kafka + Grafana observability stack helped Hugh **catch his avian adversaries** and iterate on a hobby project **without enterprise-scale complexity or costs**.

Join OutdoorLads popular weekly Thursday Bouldering evening at The Arch in Bermondsey. OutdoorLads London boulderers welcome all members of the LGBTQ+ community You'll be meeting with a supportive group of 5 to 10 plus boulderers who are always happy to introduce complete beginners or solve difficult bouldering problems with enthusiasts. We usually follow up with a pub visit. This event is for members of all levels of experience and all are welcome to come along to any of the sessions. Bouldering is a form of climbing where instead of long high routes, the 'problems', as they are referred to, tend to be shorter and focus on technique, balance, body positioning and sometimes power. Because of this different emphasis, bouldering doesn't have the hassle of climbing with ropes, harnesses and belaying, which makes the activities excellent for newcomers to the sport. If you're a seasoned climber you won't need convincing about the benefits of bouldering, but for those who've never climbed more than a staircase, the benefits are wide ranging: from the physical - improved strength, tone, balance, power and coordination; mental - problem solving, focus, concentration and body awareness; to the emotional - relaxation, a sense of achievement and a feeling that mind and body are working together perfectly ('feeling psyched'). On top of all this, bouldering tends to be a very social sport where you can hang out with mates and each have a go as you feel regardless of what level you climb at.

It's a ClickHouse Observability Meetup at SRE Days London! We've joined forces with the SRE Days team to host an evening meetup at their stunning venue. Join us for a few deep-dive talks, some food, and beverages. In fact, we are so excited that we have a discount if you want to attend the entirety of the event. Just head on over to https://luma.com/sreday-2026-london-q1 and use the code CLICK80 for a massive discount. Looking forward to seeing you there! Agenda: 5:30 - Arrival 6:00 - Uncovered: The Hard Truth About OpenTelemetry's Vendor Neutrality - Adriana Villela 6:30 - Observability Updates in ClickHouse - Dale McDiarmid 7:00 - How we built an SRE Agent with Clickhouse and eBPF - Chris Battarbee 7:30 - Running Grafana at Scale - Rory Crispin

Ready to get outside? Our Thursday morning session in Dulwich park is back! At this moment we can meet with up to 30 people (of more than two households) to do outdoor exercise and walks. However, i like to keep our exercise groups small, so I have set the maximum participants at 12. For now this walk is for our experienced Nordic Walkers only, who already used to Nordic Walk with us regularly before Covid 19 kept us indoors, and who have their own Nordic Walking poles. As this session is outdoors, we will not ask you to wear a face mask, but we do ask you to keep 2 meters apart. Some of our walkers might be immune compromised or more at risk, so please help us keep everyone safe! Please do not come to the session and stay at home if: - you know you have been in contact - in the last 2 weeks- with someone with symptoms of possible Covid, or if you have been in contact with someone who tested positive. - you have any of the following symptoms: (new) Loss of smell/taste, Persistent cough, Fatigue, Loss of appetite, Skin rash, Hives, Fever, Severe muscle pain, Shortness of breath, Diarrhoea, Delirium, Abdominal pain, Chest pain, Hoarse voice, Eye soreness, Sore or painful throat, Nausea or vomiting, Headache, Dizziness or light headedness We meet by the cafe in the middle of the park. Session Price: £10 per session, £89 for a 10-session card or £70 unlimited sessions per month. Session cards and pay Monthly can be used in any of our outdoor walks or indoor Zoom classes sessions (except for the Parkinson's sessions). Pay What Works: The price shown above is the “true” value of the session that best reflects the work I put into preparing and leading your session. However, I understand that not everyone can afford to pay full price, and I don’t want that to stop you from joining us. In an effort to find a balance between more financial accessibility and sustainable pricing, I now offer a “Pay What Works” model. This allows for financial flexibility while still valuing and respecting the work and energy I provide in creating and delivering these classes. Then send an email to ailien@fitandhappyoutdoors.com with the heading “INVOICE please”- followed by “FAHO 1” to pay full price as quoted below, “FAHO 2”, for 20% off, or “FAHO 3” for 50% off. Pllease do tell me if you want to pay for 10 sessions, or if you’d like to pay monthly. I prefer payment by bank transfer, but if that is not possible you could pay in cash. No cheques please, the queues by the banks are just too long. We walk in all safe weather conditions – if a walk is cancelled, we will contact you to let you know. Please check for text messages or Meetup messages before leaving home!

Hello folks! The next Ansible meetup is scheduled for **Thursday 12th March**. **Location** Metro Bank have kindly offered us use of their offices at 1 Southampton Row, London WC1B 5HA, short walk from Holborn Tube. The entrance is just down from the bank itself on Southampton row. Facing the Metrobank branch with Sainsburys behind you, head to the right past the bank and its on your left about 25mtrs. **As always, please bring photo ID.** **Agenda** Speaker: Gregor Berginc - Xlabs CEO Session Title: Ansible Beyond the YAML: Understanding Automation as a Supply Chain Summary: This talk explores what really runs during an Ansible execution beyond playbooks and roles. We’ll look at the hidden layers of the automation supply chain and why understanding them matters as automation scales. The goal is to share a mental model that helps practitioners move fast while understanding what truly runs in production. **Lightning Talks & Discussion** We will have lightning talks, and **accepting talks and discussions on the day**, so bring your laptop and slides/Playbooks or just start a discussion. We are looking for a for 5-15 minute lightning talks. Slides and demo optional, we are here for the discussion. We've love for you to [share your Ansible story](https://github.com/ansible-community/ansible-london-meetup/issues/new?template=submit-a-talk.md). **Refreshments & Pizza** Besides the talks, we'll have the obligatory refreshments and pizza. So come along, mingle with fellow Ansiblings, and hopefully learn something interesting from the experiences shared. **Talks wanted!** We are looking for talks (5-20 minutes) for this, and future meetups. If you have something you'd like to talk about at a future meetup, submit your talk via the [London GitHub Repo](https://github.com/ansible-community/ansible-london-meetup/issues/new/choose). Here's a list of topics people would like to hear about – can you give a future talk on any of these [popular requests](https://github.com/ansible-community/ansible-london-meetup/issues/37)? We look forward to seeing you on Thursday 12th March.

***Make sure you understand how payment works before signing up (details below)!*** It's too dark to play weekday pickup ultimate outside in the winter, so we've booked a venue to play frisbee indoors! As this is indoors, sadly space is limited (18 people) and it also costs money (£8.50 per session). We'll be playing 2 hours of super casual 5v5 pick-up games. As always, all skill levels/experience are welcome! We're happy to teach if you're happy to learn. You just have to be ready to run around a lot :) ***Signup*** Signup will open to the week before each session (at 20:30 when the previous session ends!) - there will be a waitlist if we reach capacity, just sign up and meetup will automatically move you to "going" when someone drops out. ***Payment*** * £8.50 per session Account details are as follows: Hans Erik Crefcoeur 04-29-09 32058497 Please use your name **as it is on meetup** as the payment reference. If you have not paid by **3pm the day before**, we reserve the right to remove you from meetup to allow someone else from the waitlist to attend. **IMPORTANT:** Please keep your RSVP up to date on meetup (even if you are on the waitlist, as a drop out will automatically move you to "going") - don't be a no show and stop someone else from playing! ***Location*** We're playing in the main sports hall of All Saints Catholic High School. ***Other details*** * Afterwards we always head to a pub and have a drink or two :) * Frisbee is a non-contact sport, but the occasional bumps can happen, we're all playing at our own risk In terms of equipment, as it's an indoor basketball court, please bring: * indoor, non-marking shoes (like most trainers) * a light **and** a dark top (for splitting into teams) * water

Hello and welcome to our joint **Cloud Platform Engineering London x Platform Engineering Leaders x Data & AI Leaders** meetup. This special crossover event brings together platform engineers, data and AI leaders, architects, SREs, and technology executives exploring how agentic AI systems intersect with modern platform engineering in regulated financial services environments. We are delighted to host this event at Lloyd's Banking Group in London. **Speakers & Sessions:** Panel: Agentic AI in the Enterprise Speakers: * Joseph Reeve, Growth, ElevenLabs * Chris Parsonson, CEO, Solve Intelligence * Joanna Crown, Director of Data, Moonpig * Sultan AI Awar, Solutions Architect (Digital Natives) at Databricks * Moderator: Ethan Sumner, Co-Founder & CEO at Community Stack Session: Agentic AI in Practice: How LBG is delivering scalable business value through AI Description: This session highlights LBG’s enterprise approach to scale Agentic AI, showing how the Group has built a scalable and safe foundation for Agentic AI through investments in data & AI platforms, governance frameworks, reusable agentic patterns, and AI upskilling for colleagues. Speakers: * Astitva Karunesh - AI Business Lead, AI CoE, Lloyds Banking Group * Lara Vomfell - Senior Data & AI Scientist, AI CoE, Lloyds Banking Group Session: How AI can catch what staging environments can't Description: Dylan from Overmind will spend five minutes explaining a complex Cloudfront outage that exposed the personal data of more than a hundred thousand people. Then another five minutes explaining the AI techniques that we used to simulate this exact outage using off-the-shelf models and live infrastructure state, which would have allowed them to prevent it before it ever happened. Speaker: Dylan Ratcliffe, Founder & CEO at Overmind **Agenda:** 18:00 — Arrival and refreshments 18:15 — Welcome and introduction — Ethan Sumner 18:20 — Agentic AI in Practice - LBG 18:40 — How AI can catch what staging environments can't - Dylan 18:50 — Break 19:00 — Agentic AI in the Enterprise 20:00 — Close and networking We are always keen to hear from: • Speakers • Hosts • Sponsors If you would like to speak, sponsor, or host a future event, please reach out to [Ethan Sumner](https://www.linkedin.com/in/ethansumner404/) via LinkedIn. These communities form part of the [Community Stack](https://www.meetup.com/pro/generative-ai-uk-community/) ecosystem and follow the [Community Stack Code of Conduct](https://www.communitystack.io/code-of-conduct) and [Privacy Policy,](https://www.communitystack.io/privacy-policy) ensuring a respectful, inclusive, and welcoming environment for all attendees.

Come and join us for a coffee/tea and chat as we discuss what’s hype and what’s real as well as how analytics helps us fight human trafficking. All Food and drink must be paid for as you consume it. A minimum of a drink must be orders can be water soft drink or coffe/tea etc excellent cocktails available.

Join OutdoorLads weekly Saturday bouldering morning event at Vauxwall West - please check our main event page on our website (link in the comments below). We welcome all members of the LGBTQ+ community, and you will be socialising with a supportive group boulderers who are always happy to introduce complete beginners to the sport or solve difficult bouldering problems together. This event is for members of all levels of experience and all are welcome to come along to any of the sessions. Bouldering is unique. There are few sports out there that offer a mental and physical challenge no matter what skill level you are at. Each route consists of several holds that the climber uses, focusing on problem-solving and technical movements to help them reach the top. No two routes are ever the same, and the colour-coded system indicates the difficulty level, so there's a climb for everyone to enjoy! If you have never tried bouldering before, please ensure that you have gone through the centre's safety and induction video beforehand (https://londonclimbingcentres.co.uk/pre-register/) as you will be required to answer a few safety questions when registering at the centre.

**Address: 210-212 Southwark Park Road, London SE16 3RX** **Doors Open 12pm Event starts 12:30pm-5pm** **Player Capacity: 8 players** Welcome to our **Shadowverse TCG** Constructed Tournament. The day consists of 3 to 5 rounds of Swiss and prizing is distributed to players with a positive record. To participate in the event, alongside your **ticket purchase on our [website](https://www.thebrotherhoodgames.co.uk/shadowverse-evolve-events)**, you will be asked to register on the Bushinavi app. We use this app for our tournament. We will hand out a promo pack for the tournament. If you are unfamiliar, please ask our member of staff upon arrival to the store where a member of staff will be happy to assist. If you haven't already, please join our Instagram, YouTube and Discord Server for news about upcoming events, announcements, and social interaction with your fellow players! *The Brotherhood Games Discord* https://discord.com/invite/SJaQXyeNXx

**SREday: In-Person Event on SRE, DevOps & Cloud in LONDON** Conference focused on Site Reliability Engineering (SRE), DevOps, and cloud infrastructure, bringing together engineers, platform teams, and leaders to share real-world experience building, scaling, and operating reliable production systems. 🫆[Speakers & Topics](https://sreday.com/2026-london-q1/) 🎟 [Tickets](https://luma.com/sreday-2026-london-q1?from=embed)

**DevOps Not Dead: In-Person Event on DevOps, Platform & Cloud in LONDON** Conference focused on modern DevOps, platform engineering, and cloud infrastructure. It brings together engineers, SREs, and platform teams to share practical experience in CI/CD, Kubernetes, automation, cloud architecture, reliability, and operating production systems at scale. **🎤 [Speakers & Topics](https://devopsnotdead.com/2026-london-q1/)** **🎟 [Tickets](https://luma.com/devopsnotdead-2026-london-q1?from=embed)** Get your ticket — 50% OFF with promo code: MEETUP50

We are back! This is going to be a monthly IN PERSON meet up in London. A very big thank you goes to Accurx who is hosting us in their amazing Shoreditch offices. This will include access to facilities including coffee! 😻☕️ **Want to know more? 👇** As with all CoffeeOps, this is an interactive, chatty, build your own adventure type of meet-up. Instead of booking in experts to *learn* *from*, we gather a group of practitioners to ***learn*** ***with***. We have been running for over 4 years now and often get feedback that this is the most useful meetup people join! The event is approximately 90 minutes and always starts by brainstorming topics to discuss. The group then votes on the most relevant/interesting to them and we then cycle through the topics trying to discuss each deeply, but in a time bound slot. To get an idea of topics, you can check out our remote board [here](https://easyretro.io/publicboard/h404NF84Uje4tCcxpJdHr4Ycs9B3/a4a35d2b-181b-409b-832e-a729be1af79c). The general gist is anything is fair game, though we tend to revolve around software delivery and definitely lean towards the more Ops-y or DevOps-y side of things.

Hi Everyone, We’re thrilled to announce that Meet-Up #9, the first one for 2026, is now confirmed for Thursday, 12th March! 🎉 Join us at our London HQ, 100 Liverpool Street, for an evening packed full of insightful talks, great conversations and plenty of opportunities to connect with like-minded individuals. We'll confirm the speakers next week! Of course, it wouldn’t be a proper meet-up without pizza and refreshments to keep the energy high all night! 🍕🥤 🕕 Doors open for networking at 18:00 🎤 The first talk kicks off at 18:30 🚪 Wrapping up at 20:30

Discover Kiro, AWS’s innovative development environment that adapts to your workflow. Whether you prefer specification-driven development or a more intuitive, vibe-based approach, Kiro empowers you to build applications your way. In this session, speakers will explore Kiro’s core functionality and its evolution through re:Invent 2025, along with demonstrations of prompts used to create APIs, hooks, and steering documents. In the latter part of the session, watch as we build a complete example from scratch, showcasing Kiro’s agentic AI workflow in action for spec-driven development and vibe coding. What You'll Learn - Core Kiro concepts and development philosophy Feature evolution: pre and post re:Invent 2025 Practical examples: API creation, hooks, and steering docs Live coding demonstration with real-time problem solving Who Should Attend - Developers, solutions architects, and technical leaders interested in modern AWS development tools and AI-assisted coding workflows. **Speakers Bio:** Matthew Jorat: Matthew Jorat is a Customer Solutions Manager at AWS with nearly three decades of expertise in AI, cloud transformation, migration, modernization, IT, technology, and business. His career spans infrastructure engineer, solutions architect, security auditor, customer success director, support and services director, and operations officer. He was an early adopter of AWS services as a customer, and his current role at AWS uniquely blends his technical and business skills as he partners with executive teams to translate strategic priorities into measurable business outcomes through cloud adoption, AI implementation, and operational excellence. Matt leads end-to-end AI initiatives for enterprise customers, identifying high-impact use cases and maintaining relentless focus on measurable ROI. He holds eight AWS certifications and serves as Adjunct Professor at Franklin University teaching cloud computing and AWS architecture. His expertise encompasses GenAI, agentic AI systems, migration, modernization, and optimization strategies that drive transformation at scale. [https://www.linkedin.com/in/mattjorat/](https://www.linkedin.com/in/mattjorat/) Girish Bhatia: Girish Bhatia is a seasoned technology delivery leader with deep expertise in cross-domain program management. He holds multiple AWS certifications, including AWS Certified Solutions Architect – Associate, AWS Certified Developer – Associate, and AWS Generative AI Practitioner, and is also an AWS Community Builder. Girish brings over two decades of experience in the information technology industry. Throughout his career, Girish has led major technology-driven business transformation from modernizing on-premises applications to driving large-scale cloud migrations. His work includes API-based integration platforms, data-center and mainframe modernization, and enterprise cloud adoption initiatives. Based in Columbus, Ohio, Girish works at a tech-forward fintech company. He is passionate about AWS serverless architectures, Generative AI and emerging cloud technologies. An avid learner and builder, he continues to explore and apply the latest innovations in AWS to help organizations accelerate their digital transformation. https://www.linkedin.com/in/girishbhatia/[https://www.linkedin.com/in/girishbhatia/](https://www.linkedin.com/in/girishbhatia/) **THANK YOU** *Franklin University* for hosting our meetup! To learn more about *Franklin University*, please visit their website: https://www.franklin.edu/ **DIRECTIONS** Franklin University Fisher Hall 300 E. Main St, Columbus, OH 43215 Map: https://maps.app.goo.gl/jxjBA2hUmS5qrvhq8 Parking is FREE! Please park in Lot C in front of Fisher Hall. See attached map. NOTE: Map the address only. When mapping with Google Maps it may use the Fisher Hall at OSU, which is NOT correct. **Want to sponsor the pizza and/or bar tab?** Please contact me if you would like to sponsor this meetup's pizza and/or bar tab: angelo@mandato.com

Want to be a speaker? submit your talk to our Call for Presenters!!! https://sessionize.com/cbus-hug-2026/

Window functions have nothing to do with the Windows operating system but provide a “window” to a result set when used in SQL queries. They are powerful, set-based methods to view data in unexpected ways. Window functions provide easy, set-based solutions to solve some common problems: * Using running totals * Performing operations in intervals * Identifying data gaps and islands * Performing aggregates without losing detail Many people are confused by window functions and do not know how to use them properly. This session will explore window functions, how they work, and how to use them. Demonstrations with several examples will solidify how window functions can simplify queries and make them more powerful.

Builders, creators, architects, admins, consultants - come one, come all. This one's for you. We're bringing a little friendly competition to the Columbus ServiceNow community while highlighting the cool things people have built on the platform. Five presenters will take the stage to showcase something they've built, solved, designed, or imagined on the ServiceNow platform - and a panel of judges (plus YOU, our amazing audience) will score them live. So basically, America's Got Talent but make it ServiceNow's Got Talent. Bring a notepad if you'd like 'cause you'll definitely be learning something new. Each presenter gets 10 minutes max to wow the crowd with: • A demo • A real-world business solution • A bold idea • A UX transformation • Or a creative use of the platform Judging Criteria: 🏆 Business Value 🚀 Innovation ✨ User Experience This event is about celebrating ideas, sharing knowledge, and showing how ServiceNow can drive both business impact and meaningful user value. Come learn. Come support. Come get inspired. Refreshments and bites will be provided. And maybe next time… you’ll be on stage.