## Summary * Upgrades react-redux so we can use React.memo with hooks and connected components. * Adds displayName to all the components that are React.memo as well as all components that are `pure` components. Using React Profiler you can see that when doing something as innocuous as dragging the divider bar of the Timeline you will get updates of the different tables: <img width="1547" alt="Screen Shot 2019-08-08 at 1 25 22 PM" src="https://user-images.githubusercontent.com/1151048/62789872-19efad80-ba87-11e9-92b5-eb9666c7c07a.png"> This is a result of redux making changes based on the location of the timeline. As this occurs, the UrlState begins updating its self and all children which is not what we want. You will see differences now in the snapshots such as this which adds naming to it: <img width="1582" alt="Screen Shot 2019-08-09 at 2 34 06 PM" src="https://user-images.githubusercontent.com/1151048/62808504-7a95df00-bab5-11e9-89c1-910b3908c705.png"> For the rest of us profiling we will have friendly names in our profiling tools to be able to trace what is going on very quickly Before where a name didn't exist and it just showed `Memo` or `pure`: <img width="221" alt="Screen Shot 2019-08-09 at 11 55 08 AM" src="https://user-images.githubusercontent.com/1151048/62809192-79fe4800-bab7-11e9-993b-2e7abadbb691.png"> Now that a name exists you can trace to the code quickly to the component name: <img width="1570" alt="Screen Shot 2019-08-09 at 3 08 42 PM" src="https://user-images.githubusercontent.com/1151048/62809235-9a2e0700-bab7-11e9-8711-bae7d263d487.png"> ### Checklist Use ~~strikethroughs~~ to remove checklist items you don't feel are applicable to this PR. ~~- [ ] This was checked for cross-browser compatibility, [including a check against IE11](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md#cross-browser-compatibility)~~ ~~- [ ] Any text added follows [EUI's writing guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses sentence case text and includes [i18n support](https://github.com/elastic/kibana/blob/master/packages/kbn-i18n/README.md)~~ ~~- [ ] [Documentation](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md#writing-documentation) was added for features that require explanation or tutorials~~ ~~- [ ] [Unit or functional tests](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md#cross-browser-compatibility) were updated or added to match the most common scenarios~~ ~~- [ ] This was checked for [keyboard-only and screenreader accessibility](https://developer.mozilla.org/en-US/docs/Learn/Tools_and_testing/Cross_browser_testing/Accessibility#Accessibility_testing_checklist)~~ ### For maintainers ~~- [ ] This was checked for breaking API changes and was [labeled appropriately](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md#release-notes-process)~~ ~~- [ ] This includes a feature addition or change that requires a release note and was [labeled appropriately](https://github.com/elastic/kibana/blob/master/CONTRIBUTING.md#release-notes-process)~~ |
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Kibana
Kibana is your window into the Elastic Stack. Specifically, it's a browser-based analytics and search dashboard for Elasticsearch.
- Getting Started
- Documentation
- Version Compatibility with Elasticsearch
- Questions? Problems? Suggestions?
Getting Started
If you just want to try Kibana out, check out the Elastic Stack Getting Started Page to give it a whirl.
If you're interested in diving a bit deeper and getting a taste of Kibana's capabilities, head over to the Kibana Getting Started Page.
Using a Kibana Release
If you want to use a Kibana release in production, give it a test run, or just play around:
- Download the latest version on the Kibana Download Page.
- Learn more about Kibana's features and capabilities on the Kibana Product Page.
- We also offer a hosted version of Kibana on our Cloud Service.
Building and Running Kibana, and/or Contributing Code
You might want to build Kibana locally to contribute some code, test out the latest features, or try out an open PR:
- CONTRIBUTING.md will help you get Kibana up and running.
- If you would like to contribute code, please follow our STYLEGUIDE.md.
- Learn more about our UI code with UI_SYSTEMS.md.
- For all other questions, check out the FAQ.md and wiki.
Documentation
Visit Elastic.co for the full Kibana documentation.
For information about building the documentation, see the README in elastic/docs.
Version Compatibility with Elasticsearch
Ideally, you should be running Elasticsearch and Kibana with matching version numbers. If your Elasticsearch has an older version number or a newer major number than Kibana, then Kibana will fail to run. If Elasticsearch has a newer minor or patch number than Kibana, then the Kibana Server will log a warning.
Note: The version numbers below are only examples, meant to illustrate the relationships between different types of version numbers.
Situation | Example Kibana version | Example ES version | Outcome |
---|---|---|---|
Versions are the same. | 5.1.2 | 5.1.2 | 💚 OK |
ES patch number is newer. | 5.1.2 | 5.1.5 | ⚠️ Logged warning |
ES minor number is newer. | 5.1.2 | 5.5.0 | ⚠️ Logged warning |
ES major number is newer. | 5.1.2 | 6.0.0 | 🚫 Fatal error |
ES patch number is older. | 5.1.2 | 5.1.0 | ⚠️ Logged warning |
ES minor number is older. | 5.1.2 | 5.0.0 | 🚫 Fatal error |
ES major number is older. | 5.1.2 | 4.0.0 | 🚫 Fatal error |
Questions? Problems? Suggestions?
- If you've found a bug or want to request a feature, please create a GitHub Issue. Please check to make sure someone else hasn't already created an issue for the same topic.
- Need help using Kibana? Ask away on our Kibana Discuss Forum and a fellow community member or Elastic engineer will be glad to help you out.