perf(dashboard): decouple redux props from dashboard components#16421
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@@ Coverage Diff @@
## master #16421 +/- ##
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- Coverage 76.64% 76.54% -0.10%
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Files 1000 1000
Lines 53489 53494 +5
Branches 6816 6819 +3
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- Hits 40996 40949 -47
- Misses 12257 12307 +50
- Partials 236 238 +2
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villebro
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Aug 24, 2021
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Great work! One small nit/question, other than that LGTM!
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| export class ChartHolder extends React.Component { |
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is this export needed somewhere?
| const MARKDOWN_ERROR_MESSAGE = t('This markdown component has an error.'); | ||
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| export class Markdown extends React.PureComponent { |
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LGTM ! |
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* upstream/master: fix: create example DB if needed (apache#16451) fix(native-filters): add handle undefined control value gracefully (apache#16468) Revert "chore: Changes the DatabaseSelector to use the new Select component (apache#16334)" (apache#16478) fix(explore): JS error for creating new metrics from columns (apache#16477) fix: queryEditor bug (apache#16452) docs: make code snippet usable with required imports (apache#16473) perf(dashboard): decouple redux props from dashboard components (apache#16421) perf(dashboard): reduce number of rerenders of Charts (apache#16444)
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…he#16421) * perf(dashboard): decouple redux props from dashboard components * Lint fix * Dont make copy of filters object * Remove unnecessary exports
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…he#16421) * perf(dashboard): decouple redux props from dashboard components * Lint fix * Dont make copy of filters object * Remove unnecessary exports
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…he#16421) * perf(dashboard): decouple redux props from dashboard components * Lint fix * Dont make copy of filters object * Remove unnecessary exports
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SUMMARY
In DashboardComponent (a parent component of dashboard components such as ChartHolder, Tabs, Column etc.) we had a large mapStateToProps function, which maps redux state to props. A lot of those props were used only in some components, but since they were passed to every component, each change triggered a rerender of all components instead of the ones that actually use the changed prop. This PR decouples those props from components that don't need them.
For example -
directPathToChildis used only byChartHolderandTabs, but any change of that prop triggered a rerender of all components on dashboard.This PR is the first of a series of PRs that will come soon - all related to reducing dashboard rerenders.
BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF
No changes
TESTING INSTRUCTIONS
Every dashboard functionality should work as it did before
ADDITIONAL INFORMATION
CC @junlincc @jinghua-qa