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Review request for ranger, bhavik patel, Dhaval Shah, Abhay Kulkarni, Madhan Neethiraj, Mehul Parikh, Ramesh Mani, Sailaja Polavarapu, and Velmurugan Periasamy. Bugs: RANGER-3806 https://issues.apache.org/jira/browse/RANGER-3806 Repository: ranger Description ------- **Problem Statement:** Ranger db table `x_group_users` has columns "added_by_id" and "upd_by_id" which should be filled with the id of logged-in user. Whenever group's-users mapping is pushed from usersync module at that time these values are considered from a config "ranger.xuser.createdByUserId" which is set to 1 in ranger-default-admin-site.xml and code as well. If users have set ranger db table's primary key's auto-increment offset to any number other than 1 and have not updated the same accordingly in the config "ranger.xuser.createdByUserId" then request may fail due to Foreignkey constraint violation. Example Case: if primary key's auto-increment start value has been set to 2 in db engine then first entry in table x_portal_user will have primary-key id 2. while if config "ranger.xuser.createdByUserId" is set to 1 then due to non availablity of userID 1 when it will try to insert group-user mappinng entry in `x_group_users` table with value 1 for the column "added_by_id" and "upd_by_id" it will cause to fail the request. **Proposed solution:** Rather directly putting the config's "ranger.xuser.createdByUserId" value in "added_by_id" and "upd_by_id" field of `x_group_users` table we can check whether user id exist in x_portal_user or not. if it does not exist then do not set the value received from config "ranger.xuser.createdByUserId" and avoid the Foreign-key Constraint Violation Exception. Diffs ----- security-admin/src/main/java/org/apache/ranger/service/XGroupUserService.java 9345e8180 Diff: https://reviews.apache.org/r/74039/diff/1/ Testing ------- With the patch issue is not reproducing when i have set the auto_increment_increment to 3 in mysql server env. Thanks, Pradeep Agrawal