Hi Cup, I did encounter some problems in Ignite
Could you please share the problem you encountered? On Mon, Aug 25, 2025 at 4:55 AM ddd_ot <ddd...@163.com> wrote: > Hello Maksim! > > Sorry for my delayed response, but I've been continuing digging into > Ignite just simply in the method Ignition.startClient(clientCfg). > Actually you are right, I did encounter some problems in Ignite and I think > it's a little bit tough to fix them since much of the information that I > searched online about these problems are very inaccurate and of little > use, so I consider it would be helpful to (though much more time is needed) > go deep into the source code of Ignite to see for myself how the whole > thing is running up and where & how exactly the problems occur and try to > come up with some solutions. On the other hand I think it is a good > opportunity to build up my understanding of Ignite and the structure of > some big projects (I'm a junior programmer and I find myself have much more > to learn). In fact I looked into the test examples you mentioned in your > response email and I can see some stream operations and short snippet demo > codes but I can't quite know how I can take advantages of these tests or > modify them to build up my understanding for Ignite. Please give my a hint > if it is to your convenient, thank you very much! As to the deepwiki, it's > a great AI bot and I've asked it tons of questions already. It's very > helpful and convenient! > > Thank you for these valuable advice and websites you offered! They helped > me a lot! > > Cup > Aug 25, 2025 > > <https://dashi.163.com/projects/signature-manager/detail/index.html?ftlId=1&name=ddd_ot&uid=ddd_ot%40163.com&iconUrl=https%3A%2F%2Fmail-online.nosdn.127.net%2Fqiyelogo%2FdefaultAvatar.png&items=%5B%22ddd_ot%40163.com%22%5D> > ---- Replied Message ---- > From Maksim Timonin<timoninma...@apache.org> <timoninma...@apache.org> > Date 8/19/2025 16:21 > To <user@ignite.apache.org> <user@ignite.apache.org> > Subject Re: Suggestion request - How can I go deeper in understanding > Ignite? > Hello Cup, > > Recently I started to get down to read the source code > > > Are you currently trying to solve a problem related to Apache Ignite? > > If so, the best approach is usually to *reproduce the issue*. Writing > tests with the Ignite framework is a good starting point. For example, > check these simple tests: > > > 1. > modules/core/src/test/java/org/apache/ignite/client/ConnectionTest.java > 2. > > modules/indexing/src/test/java/org/apache/ignite/cache/query/IndexQueryKeepBinaryTest.java > > I can also recommend an external service that generates documentation > based on the codebase and Javadocs. It even includes a chatbot that helps > with navigation over Ignite code: https://deepwiki.com/apache/ignite. > > Maksim > > > > On Tue, Aug 19, 2025 at 10:13 AM Sergey Chugunov < > sergey.chugu...@gmail.com> wrote: > >> Hello Cup, >> >> Apache Ignite source code is hard to grasp indeed and unfortunately there >> is no detailed explanation for each and every class in its codebase. >> >> Some components of Ignite 2.x codebase are covered in wiki pages though: >> take a look at persistent store overview >> <https://cwiki.apache.org/confluence/display/IGNITE/Persistent+Store+Overview> >> and more detailed under the hood >> <https://cwiki.apache.org/confluence/display/IGNITE/Ignite+Persistent+Store+-+under+the+hood> >> description. More general description of multi-tiered storage >> <https://cwiki.apache.org/confluence/display/IGNITE/Ignite+Multi-Tier+Storage+-+under+the+hood> >> is also available. There is also a page dedicated to the main discovery >> component: Tcp Discovery under the hood >> <https://cwiki.apache.org/confluence/display/IGNITE/TCP+Discovery+SPI+under+the+hood>. >> Look around there, there are some other useful pages too. At the same time >> some pages there are out-of-date and aren't relevant anymore. Community >> will clean them up at some point. >> >> But in my opinion the best way to build your understanding of how Ignite >> works is to use tests. Take a look at suite classes in >> org.apache.ignite.testsuites package, they group individual tests more or >> less by component or feature. Set the project up in your favorite IDE and >> start debugging the code - this way you'll understand how the whole thing >> works much faster than reading tons of documentation or wiki pages. >> >> There is also an Ignite 3.x project, and it's important to understand >> that it is a completely new codebase with very little shared code. One >> cannot easily transfer their knowledge from one codebase to another. >> Unfortunately I cannot point you to documentation of that project, maybe >> other community members will. >> >> -- >> Thank you, >> Sergey. >> >> On Tue, Aug 19, 2025 at 6:13 AM ddd_ot <ddd...@163.com> wrote: >> >>> Hello! >>> >>> I am a junior programmer new to Java and Ignite, and currently I am >>> working on some projects where Ignite 2.16 is adopted. I have implemented >>> some toy demos and hope to further explore Ignite from top to bottom. >>> >>> Recently I started to get down to read the source code of Ignite 2.16 >>> but I encountered a lot of problems while reading the code. When I dig into >>> some of the inheritance chains in the core of Ignite I found it hard to >>> tell the function and design of each class merely from the code, so I >>> was wondering if there is any demonstration or illustration to the >>> top-level structure design of Ignite to help me better understand the code >>> (e.g. I found Grid a high frequency keyword in the code but I failed to >>> find the meaning of the Grid or the design behind it). On the other hand, I >>> searched the official doc and API of Ignite but I can't find the >>> description for some specific classes. Is there any websites or references >>> that could provide the detailed description of the implementation for >>> every class in Ignite's source code so I can understand the bottom-level >>> implementation of Ignite better? Or could you please offer me some advice >>> or suggestions on reading the source code and get a deeper understanding of >>> Ignite itself? >>> >>> I am not a native English speaker so please forgive me for my poor >>> English expression, but I truly appreciate any guidance you can provide! >>> Thank you for your time and patience reading my email. >>> >>> Sincerely, >>> Cup >>> August 19, 2025 >>> >>> >>> >>>
