Hadoop QA commented on SENTRY-1874:

Here are the results of testing the latest attachment
against master.

{color:red}Overall:{color} -1 due to an error

{color:red}ERROR:{color} failed to build with patch (exit code 1)

Console output: 

This message is automatically generated.

> Do not require quiet HMS when taking initial HMS snapshot
> ---------------------------------------------------------
>                 Key: SENTRY-1874
>                 URL: https://issues.apache.org/jira/browse/SENTRY-1874
>             Project: Sentry
>          Issue Type: Sub-task
>          Components: Sentry
>    Affects Versions: 2.0.0
>            Reporter: Alexander Kolbasov
>            Assignee: Alexander Kolbasov
>              Labels: sentry-ha
>             Fix For: 2.0.0
>         Attachments: SENTRY-1874.patch
> When Sentry starts initially, it needs to get a full snapshot from HMS and 
> associate it with a specific notification ID. HMS does not provide any 
> mechanism to get a consistent snapshot with known notification ID. SO Sentry 
> does the following:
> 1) Read current notification ID_0
> 2) Obtain full snapshot from HMS
> 3) Read current notification ID_1
> 4) If (ID_0 != ID_1) goto 1.
> This creates a problem that the process may never converge when there is some 
> constant stream of HMS activity affecting notification IDs. We would like to 
> be able to use a problem that can converge in the presence of updates.

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