fix(graphql): prevent potential memory leak for mostly falsy filter function #2605
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jmcdo29
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Feb 4, 2023
packages/apollo/package.json
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| "test:e2e": "node --expose-gc ../../node_modules/.bin/jest --config ./tests/jest-e2e.ts --runInBand && yarn test:e2e:fed2", | ||
| "test:e2e:fed2": "node --expose-gc ../../node_modules/.bin/jest --config ./tests/jest-e2e-fed2.ts --runInBand", | ||
| "test:e2e:dev": "node --expose-gc ../../node_modules/.bin/jest --config ./tests/jest-e2e.ts --runInBand --watch" |
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Appreciate you wanting to show that there's not a memory leak, but is it really necessary to change the commands themselves rather than possibly updating the CI to watch for this?
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I found a solution to use global.gc() without node flags. Check out the new PR.
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lgtm |
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PR Checklist
Please check if your PR fulfills the following requirements:
PR Type
What kind of change does this PR introduce?
What is the current behavior?
As apollographql/graphql-subscriptions#209 saids, a filter function that returns mostly false can cause loops in Promises. This leads to a memory leak.
Issue Number: N/A
Relevant Issue: apollographql/graphql-subscriptions#212
What is the new behavior?
Applied changes of above PR to existing function
createAsyncIterator.Now it does not stack up awaiting Promises.
Credit to. @urossmolnik
Does this PR introduce a breaking change?
Other information