“He’d never even picked up a paddle and, just from his build and the way he walks, the coach knew he had potential.” “A coach came to my kindergarten when I was six,” Zhang told me, “and he just, like, touched my body, my shoulder, that kind of stuff, to see my potential.” For him, it long ago became “like a job.” He didn’t smile at all when Shortz first saw him compete, even when he won. Like puzzle-making, table tennis does not require imposing physicality: Zhang is five feet seven, weighs a hundred and twenty pounds, and has played table tennis almost every day for the past twelve years. That was the only day in the entire year that I missed.” ![]() Of course, I’d lined up a local club to play at that day, but I had trouble finding it-the street signs in Croatian were not helpful-and I finally arrived just as they were turning off the lights. The last time he didn’t play was October 3, 2012: “I was in Kraljevica, Croatia,” he told me, “for the World Puzzle Championship. He has also played table tennis on each of the past one thousand one hundred and twenty days-and counting. Shortz believes that he holds the record for having played in the most table-tennis clubs in the U.S.: more than two hundred and fifty. They first met in China, in 2011, when Shortz was visiting Beijing. “Remember ‘fanatical’?” Shortz asked Zhang. ![]() Shortz has helped: while driving into the city that evening, they practiced SAT words: “incongruous,” “unfettered.” (Zhang, a junior, would be taking the PSAT the next week.) On a recent Friday, I joined Zhang and Shortz at the New York première of a documentary film that the Los Angeles Times describes as “table tennis’ ‘Hoop Dreams.’ ” In less than three years, Zhang has become fluent in English, which wasn’t taught to him in China. What does their sponsorship arrangement entail? “Well,” Shortz told me recently, as we watched Zhang warm up for the October Open, “he lives with me.” Indeed, one of the most promising young table-tennis players in the United States has, in an unlikely twist of fate, come to share a roof with the “puzzlemaster,” “enigmatologist” and NPR personality Will Shortz, who is sixty-three and had, until recently, lived quite contently without children. He trains at W.T.T.C., where his sponsor is Shortz. One such young man is the eighteen-year-old Kai Zhang, currently ranked No. Those just below this level sometimes move to other countries, where reaching the Olympics in table tennis is a little easier and, not insignificantly, using Facebook is allowed. The best Chinese players can have careers in the game, earn money from sponsors, and a handful, every four years, attain Olympic glory. By ten, he may receive no other formal schooling. A Chinese child as young as six might be persuaded to attend an intensive table-tennis academy-where, to judge from one young man's experience, he’ll be expected to play for some six to eight hours a day, six and a half days a week, well into his teens, if he shows real talent. The silver and bronze medals have also mostly gone to China. Since it became an Olympic sport, in 1988, Chinese players have won every gold medal but one on the women’s side, and the majority on the men’s side, too (including four of the past five). ![]() Table tennis is one of the most popular sports in China. They regularly draw top talent from New York and beyond: Togo, Côte d’Ivoire, Poland, India, Mexico, Switzerland, and, of course, China. In late October, Westchester Table Tennis Center hosted one of Shortz’s monthly club tournaments, which are the largest in the United States, boasting as much as seven thousand dollars in cash prizes and a four-star rating from USA Table Tennis. ![]() “A coach came to my kindergarten when I was six,” Kai Zhang says, “and he just, like, touched my body, my shoulder, that kind of stuff, to see my potential.” Photograph by Henry Leeįive years ago, dipping into the small fortune that his crossword and Sudoku puzzles have brought him, the Times crossword editor Will Shortz bought an old “junk dealer’s warehouse,” near his home in Pleasantville, New York, and-because puzzles aren’t his only obsession-turned fourteen thousand square feet of it into a world-class Ping-Pong facility.
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![]() More recently, Congress came together to make the National Suicide Prevention Lifeline more easily accessible to those in need. “I didn’t volunteer to be a champion of this issue, but it arose out of the personal experience of being a parent who lost a child to mental illness and suicide,” Smith said in 2004, in one of the most emotional Senate floor speeches in memory. Smith, R-Ore., lost his son Garrett Lee Smith in 2003, he led enactment of landmark legislation that established the Garrett Lee Smith Memorial Suicide Prevention Program, providing grants to state and tribal governments for youth suicide prevention and early intervention efforts across the country. In the past, personal grief has prompted legislative action on Capitol Hill. Tommy Raskin graduated from Amherst College in western Massachusetts and was a second-year student at Harvard Law School, where according to the family his professors have included Bruce Mann, the husband of Democratic Sen. Sarah Bloom Raskin is a former deputy Treasury secretary and Federal Reserve governor. The Raskins, well known not only on Capitol Hill and in the congressman’s Montgomery County-based congressional district but across official Washington, have seen an outpouring of support since their son’s Dec. “The pain became overwhelming and unyielding and unbearable at last for our dear boy, this young man of surpassing promise to our broken world,” the Raskins wrote. “Tommy Raskin had a perfect heart, a perfect soul, a riotously outrageous and relentless sense of humor, and a dazzling radiant mind,” the Raskins wrote in the statement, describing his struggle with depression as a “relentless torture in the brain.” ![]() Jamie Raskin and his wife, Sarah Bloom Raskin, remembered their 25-year-old son Tommy in a private funeral ceremony Tuesday, a day after releasing a heartrending public tribute. The family announced last week that they had created the Tommy Raskin Memorial Fund for People and Animals in their son’s name.Ī private funeral is planned for next week.Maryland Democratic Rep. The Raskins described how their son donated half of his teaching salary “to save people with malaria by purchasing mosquito nets with global charities” and spent the rest on donations in each of his students’ names to other groups targeting global hunger. “He loved his students and they loved him back,” his parents wrote. He spent last fall as a teaching assistant in a Harvard Law justice course, meeting with his dozen students on Zoom and “finding what was precious in their work and teasing it out.” “Above all, he began to follow his own piercing moral and intellectual insights looking for answers to problems of injustice, poverty and war.” “He hated cliques and social snobbery, never had a negative word for anyone but tyrants and despots, and opposed all malicious gossip,” the post said. 30, 1995, the middle child was “a daring outspoken defender of all outcasts and kids in trouble” who spent hours in high school tutoring his peers. “making mischief, kicking the soccer ball in the goal, acting out scenes from To Kill A Mockingbird with his little sister in his father’s constitutional law class.”īorn Jan. The eulogy described Thomas’ youth in Takoma Park, Md. “On the last hellish brutal day of that godawful miserable year of 2020, when hundreds of thousands of Americans and millions of people all over the world died alone in bed in the darkness from an invisible killer disease ravaging their bodies and minds, we also lost our dear, dear, beloved son, Hannah and Tabitha’s beloved irreplaceable brother, a radiant light in this broken world.” The moving post detailed how Thomas began grappling with depression in his 20s, and how the illness was “a kind of relentless torture in the brain for him.”ĭespite a large support network of relatives, friends and doctors “the pain became overwhelming and unyielding and unbearable at last for our dear boy.” “Tommy Raskin had a perfect heart, a perfect soul, a riotously outrageous and relentless sense of humor, and a dazzling radiant mind,” his parents wrote. Known to loved ones as “Tommy,” the second-year student at Harvard Law School was remembered as an animal lover and passionate vegan devoted to helping others. ![]() “Please look after each other, the animals, and the global poor for me,” said the note, signed: “All my love, Tommy.” My illness won today,” his parents said in a Medium post. In a note left for his family on New Year’s Eve, the day he died, Thomas Bloom Raskin wrote “Please forgive me. Jamie Raskin and his wife Sarah on Monday published a heart-wrenching tribute to their late son, confirming that the 25-year-old took his own life last week after a long battle with depression. ‘Jeopardy!’ winner Mattea Roach’s father died during Masters taping: ‘Proudest dad around’ TikTok video from Missferretti "Another find for you □□ ✨Glass bowls with lids ✨ #dollartreefinds #dollartreestore #dollartreeglassware #dollartreebowl #dollartreehacks #dollartreegems #dollartreediy #dollartreekitchen #dollartreetiktok #dollartreetiktoks #dollartreeneeds #dollarstore #dollarstorefinds #dollarstoremusthaves #dollartreemusthave #dollartreefyp #dollartreeorganization #dollartreestorage #dollartreestorageideas #pleasewasheverything #washbeforeuse #friendlybudget #viralvideo #viraltiktok #viral #satisfying #satisfyingvideo #satisfyingfinds #aestheicvideos #aesthethiccontent #millennialsoftiktok #momsoftiktok #dollartreelovers #lovedollartree❤️ #dollartreehauls #dollartreehaul". original sound - iStore Online Shopping.Īnother find for you □□ ✨Glass bowls with lids ✨ #dollartreefinds #dollartreestore #dollartreeglassware #dollartreebowl #dollartreehacks #dollartreegems #dollartreediy #dollartreekitchen #dollartreetiktok #dollartreetiktoks #dollartreeneeds #dollarstore #dollarstorefinds #dollarstoremusthaves #dollartreemusthave #dollartreefyp #dollartreeorganization #dollartreestorage #dollartreestorageideas #pleasewasheverything #washbeforeuse #friendlybudget #viralvideo #viraltiktok #viral #satisfying #satisfyingvideo #satisfyingfinds #aestheicvideos #aesthethiccontent #millennialsoftiktok #momsoftiktok #dollartreelovers #lovedollartree❤️ #dollartreehauls #dollartreehaulġ06.5K Likes, 265 Comments. ![]() 32 Pcs Melamineĭinner Full Set | 32 Pcs | Offer Price |. ✅6 X Full Plate ✅6 X Half Plate ✅12 X Vegetable Bowl ✅3 X Serving Bowl ✅2 X Serving Bowl Lid ✅1 X Rice Plate ( Tray ) ✅2 X Serving Spoon". ✅6 X Full Plate ✅6 X Half Plate ✅12 X Vegetable Bowl ✅3 X Serving Bowl ✅2 X Serving Bowl Lid ✅1 X Rice Plate ( Tray ) ✅2 X Serving SpoonĢ.9K Likes, 97 Comments. Hold down the skin and use your dominant hand to slide your hand under the fish | Cut your salmon into 1 inch cubes | Place your salmon cubes into a bowl and add: Use a knife to lift the salmon from the skin just a little. TikTok video from Arianna "Reply to Done □ #fyp #series #couples #dinner #trending #viral #foodtiktok #easyrecipe #salmon #salmonrice #salmonricebowl #ricebowl #avocado #healthy #airfryer #learnontiktok #food #delicious #yum #makeitathome #homemade #recipe #madewithlove #HowTo #SearchForWonderMom #LaurelRoad4Nurses #BBPlayDate". Reply to Done □ #fyp #series #couples #dinner #trending #viral #foodtiktok #easyrecipe #salmon #salmonrice #salmonricebowl #ricebowl #avocado #healthy #airfryer #learnontiktok #food #delicious #yum #makeitathome #homemade #recipe #madewithlove #HowTo #SearchForWonderMom #LaurelRoad4Nurses #BBPlayDateĨ.7K Likes, 31 Comments. Mini aquarium | (Water fountain) | ✨ Mini aquarium ✨ |. □ #fishtok #aquarium #fishtank #catsoftiktok #cats #plants #houseplants #aquariums #diy #fishtank #waterbowl #petsoftiktok #betta #fish #petcare #pets #weeb #kitten #aquariumsoftiktok #comedy #fishtanks". I hope this water bowl will keep them busy. I’m getting sooooo tired of replacing lids and lights. ![]() □ #fishtok #aquarium #fishtank #catsoftiktok #cats #plants #houseplants #aquariums #diy #fishtank #waterbowl #petsoftiktok #betta #fish #petcare #pets #weeb #kitten #aquariumsoftiktok #comedy #fishtanksģK Likes, TikTok video from FriendlyMalice "It’s like my cats have 48474747 water fountains to choose from or something. ![]() ![]() It’s like my cats have 48474747 water fountains to choose from or something. ![]() pc file that describes the library and where it is and how to link to it. Modern stuff you install also installs a. You can supplement this by using the CPATH variable, or CFLAGS or any number of other environment variables really (conveniently complicated). There is a default path that the linker searches for libraries. Except the env variable is DYLD_LIBRARY_PATH instead. ![]() On Mac it is the same for most open source software almost always (unless it is an Xcode Project). On Linux they need to be installed to a path that the dynamic linker can find, this is defined by the LD_LIBRARY_PATH environment variable and the contents of /etc/ld.conf. ![]() configure & make finds them, what actually happens when they are linked against How shared libraries work under OS X / Linux - where they live on the filesystem, how. If you install anything anywhere else (which makes things painful if the dependency was installed by MacPorts or Fink), you will have to pass a flag to configure or modify the shell's environment to help GNU tools find these dependencies.Ģ. Generally, you shouldn't have to pass anything to configure, it should figure out if your system can build foo-tool or not.Ĭonfigure and GNU tools all look in /, /usr and /usr/local for dependencies. ![]() But there's plenty of stuff out there using cmake, or custom build scripts. Autotools is easy enough as it is consistent. How do I figure out what arguments to pass to. Basically what follows is 8 years of making desktop apps (that I help distribute), frustration and googling:ġ. I apologise for directly answering everything, but I don't know any useful tutorials, FAQs, etc. I'm willing to invest quite a bit of time and effort here - I don't necessarily want direct answers to the above questions, I'd much rather get recommendations on books / tutorials / FAQs that I can read which will give me the knowledge I need to understand what's actually going on and hence figure out problems on my own. What are the command line tools I need to master to get good at this stuff? Stuff like otool, pkg-config etc.Assuming I manage to compile something fiddly from source, how can I then package that up so other people don't have to jump through the same hoops? Particularly on OS X.If I am installing stuff from source on a system that is otherwise managed using packages, what's the cleanest way of doing so?.How can I install more than one version of a library without breaking my normal system?.How can I tell what libraries I have installed, and what versions?.What are the actual differences between a shared and a statically linked library? Why can't I just statically link everything (RAM and disk space are cheap these days) and hence avoid weird library version conflicts?.How shared libraries work under OS X / Linux - where they live on the filesystem, how.How do I figure out what arguments to pass to.This almost always relates to other library dependencies in some way. While I install software from packages (MacPorts / apt-get) where-ever possible, I often find myself needing to compile packages from source./configure & make & sudo make install is usually enough, but sometimes it doesn't work - and when it doesn't, I frequently get stuck. See more: Recovery All SD Card For PC (Windows & MAC). Project CARS was a sim racing video game series developed by Slightly Mad Studios and published by Bandai Namco Entertainment. Although we may miss being able to control all aspects while driving, the mechanics and the variety of game modes are important factors to experience races full of realism and emotion in equal measure. Watch the launch trailer for the mobile racing game, featuring 50 officially licensed real-world cars from classics hot rods to futuristic. ![]() Effectively, a pre-order for a free-to-play game, pre-registering guarantees free rewards when the game officially launches. Theres only six weeks to go until Project CARS 3, surprisingly announced in June, lands on game store shelves, and the hype train is starting to take on. Strangely, for iOS devices, we can only find it on the Russian App Store at present. Project CARS GO is a spectacular car game for Android in which the graphics will not leave any player indifferent. After a seemingly lengthy gestation, Project CARS GO is now up on the Google Play Store in the US and Europe for pre-registration. We will promote these variations in acceleration when passing through one of the luminous arcs present along the route. Project CARS GO - Project CARS Mobile Version Gets Release Date. In this game, the direction changes will occur automatically and we will only have to worry about pressing with our finger on the screen of our smartphone to accelerate and brake. ![]() It's a free-to-play game with in-app purchases. Project CARS GO is available now over on the App Store and Google Play. ![]() It is important to note that in Project CARS GO we will not have to manage all the controls in the races. We are looking forward to continuing to build on the live experience with fun events, new cars and customization options to collect and more ways to compete in the years ahead. In addition, having to compete against other vehicles to cross the checkered flag in first position makes the excitement served. The sound is also immersive and both the visual and the sound of the game make us live a totally immersive experience in each test. So consider that your back-of-the-box quote: Project CARS GO is perfect for poop time.Last week, Project CARS GO has appeared on the App Store and Google. It is enough to enter one of the circuits for the first time to see first-hand the spectacular graphics that Project CARS GO incorporates. ![]() You can use MSAL.NET, MSAL Java, and MSAL Python to get tokens from Active Directory Federation Services (AD FS) 2019 or later. Where ADAL had only authentication context class, MSAL exposes the notion of a collection of client apps (public client and confidential client).Azure AD certificate-based authentication (CBA) on mobile.Auth broker support – Device-based Conditional Access policy.Standards compliant with OAuth v2.0 and OpenID Connect (OIDC)Īzure Active Directory (Azure AD) accountsĪdditional Capabilities of MSAL over ADAL Proactively refresh and revoke tokens based on policy or critical events for Microsoft Graph and other APIs that support Continuous Access Evaluation (CAE). MSAL provides multiple benefits over ADAL, including the following features: Features We recommend you use MSAL to increase the resilience of authentication and authorization in client applications that you develop. it simplifies and manages acquiring, managing, caching, and refreshing tokens, and uses best practices for resilience. MSAL is designed to enable a secure solution without developers having to worry about the implementation details. MSAL leverages all the benefits of Microsoft identity platform (v2.0) endpoint. The following diagram shows the v2.0 vs v1.0 endpoint experience at a high level, including the app registration experience, SDKs, endpoints, and supported identities. Since Microsoft identity platform (v2.0) endpoint has changed significantly enough, the new library (MSAL) was built for the new endpoint entirely. If you've developed apps against Azure Active Directory (v1.0) endpoint in the past, you're likely using ADAL. Existing apps that use ADAL will continue to work after the end-of-support date but Microsoft will no longer release security fixes on ADAL. If you choose not to migrate to MSAL before ADAL support ends in June 2023, you put your app's security at risk. ![]() Do or say anything that adversely affects the driver's safe operation of the vehicle.Violate the Code of Student Conduct or the Human Relations Code.Possess any open container of alcohol or lit tobacco product.The driver has the right to ask any passenger to leave the vehicle if they: Please keep distractions to the driver at a minimum while they are operating the vehicle. The driver will require focus and concentration in order to maintain safe operation of the vehicle and navigating unknown roadways.Although shorter directions may exist, they may not be safe and/or navigable by a commercial vehicle. 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Slowly, over time in a most synchronistic fashion, I received answers to my questions that, today, make up my worldview. What drives people to do terrible things to each other? Why do bad things happen to innocent beings like children and animals? ![]() ![]() In the back of my mind during all this time, I was asking the following questions of the world: I graduated college, two graduate schools and law school due to these new life skills. For the next 20 years, I went in and out of outpatient therapy, taking group classes like sexual assault victims classes and Dialectical Behavior Therapy ( 1) where I learned life-changing skills: how to manage emotions, express feelings, set and observe boundaries, handle trauma, and communicate healthily. I saw it like school, a place where I could better myself and learn new things. Throughout therapy, residual traumas – bullying and abuse during childhood and through adulthood from various sources also surfaced and I had to deal with those, too. On top of it, I was found “gifted” and “highly sensitive” – which sounds elitist but in this context it means that my traumas impacted me more than it would the average person. I was diagnosed with PTSD and suffered from depression and anxiety. I was sexually assaulted twice in college. Twenty years ago, I was in college and had a breakdown, resulting in my family dragging me to therapist after therapist until finally, there was one who I felt understood me, and I opened up to them. This is the first time that I am sharing my story publicly in print, and I am scared but, this is a moment over 20 years in the making, perhaps more. Courage is committing to something and doing it despite the fear you feel. ![]() Prevedere is an industry insights and predictive analytics company that is helping business leaders make better decisions by providing a real-time view of their company’s future. Investors: Drive Capital, RRE Ventures, Eniac Ventures, Emerald Development Managers, & Sagamore Ventures. Total Funding: $18.8M in 2 Funding Rounds (Last Funding Type: Series A) READY Robotics empowers manufacturers to be more competitive through their line of easy-to-use industrial robotic systems. Discover the ease of use of industrial robots. Ready Robotics is a developer and supplier of innovative automation designed for a wide range of tasks. Investors: Kleiner Perkins, Lewis & Clark Ventures, Drive Capital & Savan Devani. Total Funding: $33.4M in 4 Funding Rounds (Last Funding Type: Series C) Investors: Basis Set Ventures, Drive Capital, Lemons VC, & Chris Ebdemon.īeam Dental is a dental benefits company that offers employers a fundamentally unique approach to dental coverage by incorporating dental hygiene behavior into policy pricing while delivering world class support and service. It works with employers, individuals, and families to deliver fundamentally better care. Total Funding: $15M in 2 Funding Rounds (Last Funding Type: Series A) They develop and advances state-of-the-art methods to solve general problems and apply what we develop to manufacturing. Path Robotics is an Artificial Intelligence company producing autonomous welding robots based on proprietary artificial intelligence and computer vision algorithms. Investors: Sierra Ventures, Rev1 Ventures, Northpond Ventures, & Tamarind-Hill. Total Funding: $17.2M in 2 Funding Rounds (Last Funding Type: Series A) Deep Lens designs and develops workflow technology and image analysis software platform and algorithms. Investors: Draper Triangle, Rev1 Ventures, Ohio Innovation Fund, & JumpStart.Ī SaaS-based precision medicine software suite, extending one of the World’s first digital pathology cloud platforms that for over ten years has allowed pathology groups to collaborate on groundbreaking cancer research across dozens of cancer types. Total Funding: $19M in 3 Funding Rounds (Last Funding Type: Series B) It provides the solutions you need to address compliance, data governance and human behavior risk within enterprise collaboration networks such as Microsoft Teams, Yammer and Workplace by Facebook. Investors: Khosla Ventures, Silicon Valley Bank, Ascension Ventures, Drive Capital etc.Īware was formerly known as Wiretap, is a cloud intelligence platform that adopts the latest advancements in cognitive computing, artificial intelligence and behavioral analytics to amplify enterprise value by monitoring the social graph. Total Funding: $72.8M in 5 Funding Rounds (Last Funding Type: Series D) The company acts as the intelligent router between systems and data by automating repetitive, high-volume tasks and workflows, providing true interoperability. It' mission to build meaningful artificial intelligence that empowers and scales humans to achieve more than ever before. Olive, formerly known as CrossChx, is a healthcare-specific artificial intelligence and process automation company that empowers healthcare organizations to improve efficiency and patient care while reducing costly administrative errors. Investors: Tiger Global Management, Redpoint, Scale Venture Partners, Ribbit Capital, Silicon Valley Bank, & Drive Capital. Total Funding: $177.5M inn 4 Funding Rounds (Last Funding Type: Series D) The entire Root experience lives in a simple, easy-to-use app. Using technology in smartphones to measure driving behavior, our app lets us know who’s a safe driver and who isn’t. The company uses artificial intelligence to help good drivers save an average of $1187 a year on car insurance. Here Are The 25 Best Startups in Columbus, Ohio:Ī fintech unicorn, Root is a mobile-first insurance carrier that uses an app to rate drivers based primarily on how they actually drive-not who they are. Millions of dollars have been pouring into Columbus-based startups, making it an attractive location for new companies and aspiring founders. ![]() ![]() These Are The Best 25 Startups based in Columbus, OH!Ĭolumbus has incubated some remarkable startups over the years! Its booming downtown, historic neighborhoods, arts and sporting districts, open attitude and a noticeably affordable quality of life, makes the city an ideal place to start a business.Ĭolumbus startup ecosystem has been experience a huge growth since 2010. ![]() ![]() Filename of the directory where the Lucene index is stored is the timestamp of when the index is created. ![]() This allows us to avoid touching that index if we don't need to. When several threads are updating a particular index, access to that index is quite slow.We are able to stripe the indexes themselves across the multiple disk partitions.As a result, it can contain a max of ~2 billion records. Lucene stores the document ID is a 32-bit integer, rather than a 64-bit integer.As we index the data in Lucene, we "shard" the Lucene indices so that they do not grow beyond some configurable amount of space (default of 500 MB).When all data has been written to the merged Provenance Event Log File, compressed, and indexed, we delete the original journal files.We do this so that we can allow multiple threads to index the data at once, as the indexing is very computationally expensive, and is actually the bottleneck of NiFi when processing extremely large volumes of data records. A separate thread will then pull this information from a queue and index the data in Lucene. After each record is written, it is then placed on a queue along with a pointer to the data.This allows us to access these records extremely quickly. We will have to read at most 1 MB of (decompressed) data. As a result, if we have a Provenance Event Log File that is, say 1 GB when compressed, and we want a specific record from it, we can simply seek to the block offset (say 980,028,872) and then wrap the FileInputStream with a GZIPInputStream and start reading from there. The pointer to the data is the Provenance Event Log File that the data is stored in, the ID of the event, and the compression block offset. This way, when we index the events, we are able to index the relevant fields as well as a pointer to the data. This offset is the offset into the file where this block of events starts. At the same time, we keep a mapping in a ".toc" (Table-of-Contents) file of compression block index to "compression block offset". As we compress the data, we keep track of the "compression block index." We write 1 MB of data to a GZIP Stream, and then we increment the compression block index.We do not index data as it is written, as doing so would slow down throughput.If we shutdown or lose power while writing, if we are writing to a compressed file, data may not be recoverable.We do not compress data as it is written, as doing so would slow down throughput.When we roll over the journals, we compress and index the data.As this is occurring, we 'roll over' the journals so that other threads can update the repository at the same time. After some configurable period of time (30 seconds, by default), we take all journals and merge them into a single Provenance Event Log File.This allows us to change the schema as we need but also allows us to avoid the expense of converting the Provenance Event into an intermediate data structure, such as an Avro Record, just so that it can then be serialized to disk, and then doing the same thing when we deserialize. If we write to only a single journal per disk partition, then we do not utilize the disk well, as the serialization from object to bytes is fairly expensive. We have multiple journals per container because we are serializing the data inline. ![]() When we update the repository, we round-robin between partitions.
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