[ https://issues.apache.org/jira/browse/SENTRY-1784?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16031851#comment-16031851 ]
Sergio Peña commented on SENTRY-1784: ------------------------------------- Got it. I understand the problem now. Seems this issue will go away with when SENTRY-1760 is fixed that uses image ID as well. I don't think we should move code that might be removed in later on SENTRY-1760. > 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, > SENTRY-1784.001-sentry-ha-redesign.patch, > SENTRY-1784.002-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. -- This message was sent by Atlassian JIRA (v6.3.15#6346)