# Best way to learn Elasticsearch internal **URL:** \ **Category:** Elasticsearch\ **Created:** [April 13, 2020, 9:02am UTC](https://discuss.elastic.co/t/best-way-to-learn-elasticsearch-internal/227748 "2020-04-13T09:02:14Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![amitkg](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@amitkg](https://discuss.elastic.co/u/amitkg)\ **Post date:** [April 13, 2020, 9:02am UTC](https://discuss.elastic.co/t/best-way-to-learn-elasticsearch-internal/227748/1 "2020-04-13T09:02:15Z")
Hi, I am new to Elasticsearch and fond of this system. I would like to learn more about internal design and motivation behind such design. I did follow some of youtube videos or blogs which covers the bottom up design. I came to know design of shard, index etc. But I would like to learn more on this. I would appreciate your help to point me to rooadmap or resources to learn more about Elasticsearch. Regards, Amit ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [April 13, 2020, 3:30pm UTC](https://discuss.elastic.co/t/best-way-to-learn-elasticsearch-internal/227748/2 "2020-04-13T15:30:18Z")
Welcome! I'm afraid that the question is too vague to be answered. Anything specific you'd like to know? ---
**Author:** ![amitkg](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@amitkg](https://discuss.elastic.co/u/amitkg)\ **Post date:** [April 13, 2020, 4:47pm UTC](https://discuss.elastic.co/t/best-way-to-learn-elasticsearch-internal/227748/3 "2020-04-13T16:47:26Z")
I am seeking for detail architectural design that can help me understand the purpose of each of module. ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [April 13, 2020, 5:28pm UTC](https://discuss.elastic.co/t/best-way-to-learn-elasticsearch-internal/227748/4 "2020-04-13T17:28:50Z")
I don't think there's such a document. ---
**Author:** ![amitkg](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@amitkg](https://discuss.elastic.co/u/amitkg)\ **Post date:** [April 14, 2020, 6:44pm UTC](https://discuss.elastic.co/t/best-way-to-learn-elasticsearch-internal/227748/5 "2020-04-14T18:44:40Z")
By any chance, do you have UML for it? ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [April 14, 2020, 7:20pm UTC](https://discuss.elastic.co/t/best-way-to-learn-elasticsearch-internal/227748/6 "2020-04-14T19:20:47Z")
No there's not I think. ---
**Author:** ![amitkg](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@amitkg](https://discuss.elastic.co/u/amitkg)\ **Post date:** [April 15, 2020, 2:16am UTC](https://discuss.elastic.co/t/best-way-to-learn-elasticsearch-internal/227748/7 "2020-04-15T02:16:15Z")
May it possible to get some of your time to learn some things on Elastic Search? I am struggling to run in debug mode on Intellij. I would appreciate your help on this. Regards, Amit ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [April 15, 2020, 4:51am UTC](https://discuss.elastic.co/t/best-way-to-learn-elasticsearch-internal/227748/8 "2020-04-15T04:51:59Z")
That's another question. Could you open a new question and provide what you are doing and what are the error messages? ---
**Author:** ![amitkg](https://avatars.discourse-cdn.com/v4/letter/a/4da419/32.png) [@amitkg](https://discuss.elastic.co/u/amitkg)\ **Post date:** [April 15, 2020, 5:07pm UTC](https://discuss.elastic.co/t/best-way-to-learn-elasticsearch-internal/227748/9 "2020-04-15T17:07:47Z")
I have posted earlier this but no response on that yet. Please can you help me on this. > [@Failing to run on Intellij in debug mode](https://discuss.elastic.co/t/failing-to-run-on-intellij-in-debug-mode/227805): > > Hi, I followed the instruction, provided CONTRIBUTING.md and TESTING.asciidoc, to setup Elasticsearch on Intellij (macOS 10.15.4) . I was able to run it normal mode but I am unable to run it in debug mode. This worked: ./gradlew run But failed to run with following error: ./gradlew run --debug-jvm \> Task :distribution:run FAILED Running elasticsearch in debug mode, node{:distribution:runTask-0} suspending until connected on debugPort 5005 Exec output and error: | Output for ./bin/elasticsear… ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [May 13, 2020, 5:07pm UTC](https://discuss.elastic.co/t/best-way-to-learn-elasticsearch-internal/227748/10 "2020-05-13T17:07:49Z")
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