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Keeping local comments and sharedCommentsArray orders in sync #4721

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merged 1 commit into from
Jun 29, 2023

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ebads67
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@ebads67 ebads67 commented Jun 29, 2023

The order of CommentStore local comments and the shared comments array must be exactly the same. Otherwise, the order of comments may be different for different users, and most importantly the delete operation depends on it.

If the delta contains more than one insert (happens during the initial load of comments) the order of the comments is reversed. This PR fixes this issue by applying the inserts to the local comments in the reverse order.

This is a one line change. Turn on the ignore-whitespaces feature to review.

commentsWrongOrder

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@facebook-github-bot facebook-github-bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Jun 29, 2023
@ebads67 ebads67 marked this pull request as ready for review June 29, 2023 13:39
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@fantactuka fantactuka left a comment

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Good catch, thank you!

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Good catch, thank you!

@fantactuka fantactuka merged commit 9b495b8 into facebook:main Jun 29, 2023
@zurfyx zurfyx mentioned this pull request Jul 11, 2023
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3 participants