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https://issues.apache.org/jira/browse/SENTRY-2109?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16339528#comment-16339528
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Alexander Kolbasov commented on SENTRY-2109:
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[~kkalyan] ignore the title, it takes care of gaps as well.
The fix strictly serializes all updates to notifications using row lock on the
notification ID row, so it essentially works as a distributed lock. As a
result, all artifacts related to concurrent modifications disappear.
> Fix the logic of identifying HMS out of Sync and handle gaps and
> out-of-sequence notifications.
> -----------------------------------------------------------------------------------------------
>
> Key: SENTRY-2109
> URL: https://issues.apache.org/jira/browse/SENTRY-2109
> Project: Sentry
> Issue Type: Bug
> Components: Sentry
> Affects Versions: 2.1.0
> Reporter: kalyan kumar kalvagadda
> Assignee: kalyan kumar kalvagadda
> Priority: Major
> Fix For: 2.1.0
>
> Attachments: SENTRY-2109.001.patch, SENTRY-2109.002.patch,
> SENTRY-2109.003.patch, SENTRY-2109.004.patch, SENTRY-2109.005.patch,
> SENTRY-2109.006.patch, SENTRY-2109.007.patch, SENTRY-2109.008.patch,
> SENTRY-2109.009.patch, SENTRY-2109.010.patch, SENTRY-2109.010.patch,
> Screenshot_HMS_NOTIFICATION_LOG.png
>
>
> Currently HMSFollower proactively checks if sentry is out of sync with HMS
> and initiates full snapshot, if needed.
> There will be false positives with the current logic if there are gaps in the
> event-id in the notification log sequence.
> This jira is aimed at making that logic robust.
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