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https://issues.apache.org/jira/browse/SENTRY-1784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16024247#comment-16024247
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Hadoop QA commented on SENTRY-1784:
-----------------------------------

Here are the results of testing the latest attachment
https://issues.apache.org/jira/secure/attachment/12869787/SENTRY-1784.001-sentry-ha-redesign.patch
 against sentry-ha-redesign.

{color:red}Overall:{color} -1 due to 2 errors

{color:red}ERROR:{color} mvn test exited 1
{color:red}ERROR:{color} Failed: org.apache.sentry.hdfs.TestKrbConnectionTimeout

Console output: 
https://builds.apache.org/job/PreCommit-SENTRY-Build/2769/console

This message is automatically generated.

> DBUpdateForwarder returns empty update list to HDFS instead of full update
> --------------------------------------------------------------------------
>
>                 Key: SENTRY-1784
>                 URL: https://issues.apache.org/jira/browse/SENTRY-1784
>             Project: Sentry
>          Issue Type: Sub-task
>          Components: Sentry
>    Affects Versions: sentry-ha-redesign
>            Reporter: Na Li
>            Assignee: Na Li
>            Priority: Critical
>             Fix For: sentry-ha-redesign
>
>         Attachments: SENTRY-1784.001-sentry-ha-redesign.patch
>
>
> When HDFS first asks Sentry for update, the request changeID is 1. If there 
> is no entries in permission change table (current changeID is 0), empty 
> update list is returned to HDFS because the current code behavior is that no 
> update is returned if request changeID is larger than the current chaneID.
> Once this problem is fixed (returning full update when request changeID = 1, 
> and current changeID = 0), another issue of the current code is that after a 
> full update is sent to client, and there is no entries in permission change 
> table (current changeID is 0), the next request changeID is still 1, 
> so full update is returned for the second time. Full update will be sent for 
> each request until permission change table has at least one entry. 
> The desired behavior is for HDFS to get full update when it sends the first 
> request to Sentry. Once it gets full update, the following requests should 
> get delta updates unless some updates are purged before they are sent to HDFS.



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