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Set account to default if the balance reaches 0 in a checkpoint bank #1932
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rob-solana
reviewed
Nov 27, 2018
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| let account = bank.get_account(&alice.pubkey()).unwrap(); | ||
| let default_account = Account::default(); | ||
| assert_eq!(account.tokens, default_account.tokens); |
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these assertions should also apply to a brand new bank, too, right?
can you compare bank.get_account() and Default::default() directly, instead of comparing each field?
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Yes, assertions should apply to fresh bank accounts.
I tried comparing get_account() to default(). It's not implemented.
rob-solana
approved these changes
Nov 27, 2018
garious
approved these changes
Nov 27, 2018
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I was hoping you'd add a pre-condition, that asking for an account in an un-checkpointed Bank gives you exactly the same answers (though maybe that's captured in another test) |
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Sorry, I'll push a new change with the additional checks. |
vkomenda
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Aug 29, 2021
) Bumps [@solana/web3.js](https://github.com/solana-labs/solana-web3.js) from 1.16.1 to 1.18.0. - [Release notes](https://github.com/solana-labs/solana-web3.js/releases) - [Changelog](https://github.com/solana-labs/solana-web3.js/blob/master/.releaserc.json) - [Commits](solana-foundation/solana-web3.js@v1.16.1...v1.18.0) --- updated-dependencies: - dependency-name: "@solana/web3.js" dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <[email protected]> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
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Problem
Checkpoint'ed bank doesn't drop the account when the balance reaches 0. It updates the balance to 0, and retains the account. However, it also retains the program assignments and userdata for the account, consuming RAM and resources.
Summary of Changes
When the balance drop to 0, replace the account with Account::default()
Fixes #1931